electronic terms for board exam

8/13/2019 Electronic Terms for BOARD EXAM

1/18

ELECTRONICS ENGINEERING COACHING NOTES

Lead acid does not depend on:

Ans: Rate of charge

Lead acid consists of:

Ans: Dilute sulfuric acid s!onge lead and lead!ero"ide

Computer on a chip is called:

Ans: Trans!uter

Transputer consists of

Ans: #$ %its

Nibble consists of ____ bits.

Ans: &

OP amp has a gain of approximately

Ans: '((((((

The voice coil has an impedance beteen

Ans: & and '(( oh)s*

!emiconductor have ____ bonds.

Ans: co+alent

Nima" gantry robot has

Ans: good !recision !ositioning

!ulphation in a lead acid cell is

Ans: to inco)!letel, charging

Nic"el cadmium can be charged or discharged because

Ans: -ater is neither a%sor%ed or for)ed*

#aisy chaining

Ans: )ethod used in deter)ining interru!t !riorities ina )icrocontroller*

$ho coined the term robot%

Ans: .arel Ca!e/

L&!'( is classified as

Ans: )onochro)atic* Coherent and colli)ator*

))) timer consists of

Ans: asta%le )onosta%le and 0CO

'arly effect is also called

Ans: %ase -idth )odulation

The effect produced due to flo of electrons and holes

Ans: drift current

Process of adding impurities in the intrinsic semiconductorAns: Do!ing

$hat is reduced by using bundled conduction%

Ans: 1o-er loss due to corona*

________ is also called modified *axell $ien bridge.

Ans: Anderson %ridge*

________ is a bridge that compares the capacitance of the

capacitor.Ans: De Soutr, %ridge

+t measures un"non inductance in terms of resistance and

capacitance.Ans: Anderson %ridge

&n +C consists of passive devices.

Ans: 2il) IC

!+ unit of luminous intesnisty

Ans: Candela

!+ unit of illuminance

Ans: Lu"

& microave diode that has a fre,uency range of -/-

012Ans: I31ATT diode

& microave diode in the negative resistance region.

Ans: 1IN diode

!chmitt trigger acts li"e a

Ans: Latch

3ermi level is in the

Ans: 2or%idden ga!

+nvalid N&N# flip/flop violation

Ans: S4( C4(

+nvalid NO( flip/flop violationAns: S4' C4'

(ange of depletion idth

Ans: (*5 and ' u)

+mpedance matching

Ans: Transfor)er cou!ling and e)itter follo-er*

*axell/$ien bridge measures

Ans: Inductance

# flip/flop consists of

Ans: 6. fli!7flo! RS fli!7flo! and in+erter

4ses binary counters

Ans: D fli!7flo!

+deal C*((

Ans: Infinit,

!C&(& uses ____ operation

Ans: Asse)%l,

0old doping has an advantage of

Ans: Reduced storage ti)e*

+t is the time for the diode to be forard biased to off time

Ans: Re+erse reco+er, ti)e

The reverse current doubles in every ___ 5C increase in

temperature.Ans: 8

L&!'( and L'# are in hat spectrum%

Ans: Infrared s!ectru)*

0a&s is used for

Ans: Infrared light or in+isi%le light

Tapped coil oscillator

Ans: Hartle,

1


2/18

Tic"ler coil oscillator

Ans: Ar)strong

Tapped capacitor oscillator

Ans: Col!itts

The sediment that allos the bottom of the lead acid cell

Ans: Anti)on, Lead allo,

To transistors in class 6 is in

Ans: 1ush7!ull

Photodarlington consists of

Ans: Transistor and !hototransistor

Largest voltage applied ithout irreversible damage

Ans: 1I0

Thermal neutron is also called _____ neutron.

Ans: Slo-

&valanche brea"don is due to

Ans: collision

One nibble consists of

Ans: & %its

Large computer has a maximum of

Ans: 8& %its

Card readers can read about

Ans: '(*((( cards !er )inute

&dvantage of 'CL

Ans: Lo-est !ro!agation dela,

!chott"y TTL has

Ans: Least !ro!agation dela,

*ain advantage of C*O!

Ans: Lo- !o-er

CC voltage gain

Ans: cannot %e e"ceeded to unit,*

Largest voltage applied ithout irreversible damage

Ans: 1I0

Transputer operates in

Ans: !arallel data

+t is an +C consist of passive and active devices

Ans: 3onolithic IC

+t is an +C consist of passive devices

Ans: 2il)

#iscrete circuit

Ans: Digital circuit

Linear circuit

Ans: Analog circuit

6ac"hausen criterion is a condition that

Ans: sto!s oscillating

Negative output sing occurs

Ans: near saturation

Positive output sing occurs

Ans: to-ards cut7off

$hen dry cell is charged7

Ans: It increased in +olu)e

Class C acts

Ans: as an R2 a)!lifier

Crystal uses

Ans: R2 trans)itter

& class of amplifier that has 8)9 efficiency

Ans: Class C

$ith !i7 2-;7 it is

Ans: Half7filled

3ormation of !i in valence shell

Ans: $ 9 &


3/18

!traight line ?oints movement of the robot is called

Ans: 1ris)atic =oints

+nput and output point

Ans: Handsha/ing

(L high pass filter has a phase difference of

Ans: &5 degrees

$ho invented the microprocessor in -@A@%

Ans: Ted Hoff

$ho invented the -st+C%

Ans: 6ac/ .il%,

d+>dt of an !C( is

Ans: local hot s!ot

B display maximum reading

Ans: (>>>

B - m< reading

Ans: '(((

!traight line method

Ans: !iece-ise linear )ethod

+mproper biasing of +C

Ans: causes distortion

One "$h of energy is e,uivalent to

Ans: 98( /cal

Dunction brea"don occurs in

Ans: re+erse %ias

(atio of &h and $h is

Ans: greater than one*

The capacity in a cell is measured inAns: Ah

+n the +C7 the !iO=layer is

Ans: isolation

& + characteristic curve is

Ans: ?olt@)an diode characteristic*

'arly effect is also called

Ans: %ase -idth narro-ing*

&dvantage of !inburneEs test is

Ans: +er, con+enient and +er, econo)ical*

&n +C consists of ceramic substrateAns: thin fil) IC

&n +C consists of alumina substrate

Ans: thic/ fil) IC

+t is the development of a traverse electric field in a solid

material hen it carries an electric currentAns: Hall effect

+t is used hen the input signal has periodically occurring

intervals in hich the input aveform is ,uiescentAns: s,nchroni@ed cla)!ing

& circuit that produces an output only hen first activated

by a preliminary pulseAns: sa)!ling gate

!uccessive trigerring signal induces a transition regardless

of the state in hich binary happens to beAns: s,))etrical triggering

6oth carrier drift and carrier diffusion depend on ___

Ans: Einstein relation

*icroprogramming isAns: A techniue to i)!le)ent the control logicnecessar, to e"ecute instructions -ithin a!rocessor*

+t is used to measure a speed by cutting off light at a regular

intervalAns: Stro%osco!e

Thermal runaay is

Ans: is an electroche)ical reaction that causes a%atter, to heat and !ossi%l, e"!lode*

& "ind of (O* that degrades its on memory contents as

the memory is read

Ans: EARO3

&n inductor operates at ; 1F

Ans: Toroidal core

&n inductor operates at @) *1F

Ans: Air core

#ata bus

Ans: It is data lines in a s,ste) %us*

+n converting intrinsic into N/type extrinsic semiconductor7

hich element cannot be used%Ans: Indiu)

Pin resistor has industrial heating in

Ans: Hair!in for)

&ny solid ob?ect has ___ degrees of freedom

Ans: 8

3lip/flop as a latch

Ans: S7C fli! flo!

P+N diode

Ans: A )icro-a+e diode freuencies u! to GH@ range*

+p>+v of a tunnel diode is used in

Ans: Co)!uter a!!lication

Noise figure of **+C G*onolithic *icroave +ntegrated

CircuitHAns: #*5 to 8 d?

4ni,ue advantage feature of C*O!

Ans: 1o-er in a nano-att range

&ny charge in a battery hen ta"en off the vehicle

Ans: ?ench charge

L&!C( acts li"e a

Ans: Latch

& ord has

3


4/18

Ans: '87%it length

& double ord has

Ans: #$7%it length

& company ho invented the ord byte

Ans: I?3

#egrees of freedom is the number of ______ independent

movements including the end effectorAns: inde!endent

&n inductor operates at ; 1F

Ans: Toroidal core

Percentage loss of the dc ound machine

Ans: ' ;

$hen dc voltage is removed7 the clamper acts as a

Ans: Rectifier

C*O! has extremely

Ans: Large !ac/ing densit,

!olar cell has a principle of

Ans: 1hoto+oltaic cell

!ensor that detects change in resistance in extrinsic

semiconductorAns: S!reading Resistance Sensor BSRS

(educe the stray capacitance and capacitance beteen

bridge arm by groundingAns: agner Grounding

& meter sensitivity control in a test instrument

Ans: Linear Ta!er 1otentio)eter

& volume control in a stereo compact disc player

Ans: Logarith)ic Ta!er 1otentio)eter

3aster in retrieval and storage compared to magnetic tape

Ans: 3agnetic Dis/

+t has more ripple in a bandpass and cut/off fre,uency

Ans: Che%,she+ filter

#arlington pair of transistors is _____ by 6eta factor.

Ans: )ulti!lied

CC# has ___ transfer electrons

Ans: 8

Neutral logic

Ans: Trinar, logic

Totally true7 totally false

Ans: 2u@@, logic

$hich is not a factor of capacitance%

Ans: 1late thic/ness

+deal input impedance of an op/amp

Ans: 0er, high

+deal output impedance of an op/amp

Ans: 0er, lo-

$ith - I to match ith higher input impedance7 the

configuration isAns: Co))on %ase

Optocoupler consists of an

Ans: LED and !hototransistor

Optoisolator consists of an

Ans: LED and !hototransistor

Positive feedbac"

Ans: Oscillator

Phase loc"ed loop

Ans: 2reuenc, discri)inator 23 detector

&ir as inductor core has

Ans: Greatest efficienc,

$hat increases noise immunity in op/

amp%

Ans: H,steresis

(esisitve element

Ans: Hori@ontal a"is

(eactive element

Ans: 0ertical a"is

!ine ave ith all harmonics

Ans: Suare -a+e

+t abruptly changes from = voltage leads

Ans: Suare -a+e

AB.= 9

Ans: One ti)e constant

& sine ave oscillator7 sine ave circuit

Ans: Cr,stal

Positive pulse on anode terminal

Ans: Turning on an SCS

B phase rectifier that uses A rectifierelement

Ans: Grat@ rectifier

$hat uses as mar"er of - "1F%

Ans: $ fli!7flo!s

3eature of (/! to D/J flip/flop

Ans: Toggle

LC balance bridge

Ans: 3a"-ell %ridge

Operator on microave fre,uency

Ans: GaAs o+er Silicon or Ger)aniu)

D/J flip/flop fre,uency

Ans: Di+ides the freuenc, %, $*

!mall capacitance formed by tisting =

insulated ire

Ans: Gi))ic/ Ca!acitor

*odified *iller circuit

Ans: 1hanastron

Converts step to ramp circuit

Ans: 3iller circuit

!ervocontrolled robots are robots ithin

___ mm range rather than a fraction of mm.

4


5/18

Ans: $

+t is an electron tube hich emits

photoelectrons hen the cathode is eliminated

Ans: 1hototu%e

+t is a radiant energy absorbed by the

radiant to incident energy

Ans: A%sor!tance

+nventor circuit

Ans: Con+erts dc to ac circuit

Laurence or Living stone

Ans: 3agnetic resonator or c,clotron

*icroporgramming

Ans: Seuence of fi+e %inar, codes

); degrees

Ans: 1hase o!!osition

Poer efficiency of solar cell

Ans: 5; to '5;

Thermal detector

Ans: ?olo)eter

'xact location of data

Ans: A%solute code

3undamental fre,uency in all harmonics

Ans: Sa-tooth -a+e

ddt of !C(

Ans: 2alse trigerring

*onolithic +C uses

Ans: E"tensi+e large co)!onents

*O! +C uses

Ans: 3OS2ET

& diode ith no depletion region

Ans: Schott/, diode

L'# emits light because

Ans: Electron and holes reco)%ine

$hat is the difference on the input

impedance of 6DT and 3'T%

Ans: A 2ET has high in!ut i)!edance -hile ?6T haslo- in!ut i)!edance*

*ar"ing of scale to accept standard

Ans: Cali%ration

2ener diode is in

Ans: re+erse diode

The temperature coefficient of extrinsic

semiconductor is

Ans: negati+e


6/18

Ans: $ 0

!olid grounding has a voltage belo

Ans: 88( 0

(esistance grounding has typical

voltage beteen

Ans: #*# '' /0

Percentage conductivity of pure

annealed silver ire

Ans: '(9*9;

Percentage conductivity of @@.)9 pure

gold

Ans: F$*8;

Percentage conductivity of AB9 pure

aluminum

Ans: 8#;

Corona is maximum on

Ans: trans)ission lines

Transformer that operates on the

fre,uency range of = "1F to = *1F

Ans: Carrier freuenc, transfor)er

D3'T configuration for buffer amplifier

Ans: co))on drain

D3'T configuration for good voltage

amplification

Ans: co))on source

D3'T configuration for high fre,uency

amplifier

Ans: co))on gate

The dc/dc converterith unregulated

input voltage and regulated output voltage

Ans: S31S BSingle 3ode 1o-er Su!!l,

Corona is due to

Ans: radio interference

& transformer on the fre,uency of -)

"1F

Ans: Con+erter transfor)er

+ngredients of et cell

Ans: inc and co!!er

*ain ingredient of dry cell

Ans: inc container

+t reduces gain to a limiting level

Ans: Li)iter

3irst transistor

Ans: 1oint contact

3irst fuel battery as invented by _____

in -@)@.

Ans: 2*T* ?acon

4nli"e buc" and boost converter7 the

buc" boost converter featured output voltage:

Ans: o!!osite !olarit, to in!ut*

Lattice in hich the lattice points are only shon in the

crystal

Ans: ?ra+ais Lattice

&n error due to shortcoming of instruments

Ans: S,ste)atic error

&n error that cannot be corrected

Ans: Rando) error

+t is a substance here the bul" is composed

Ans: Ele)ent

Typical voltage of lead/acid

Ans: $*' 0

$hat type of cell used in the emergency system%

Ans: Sil+er7@inc cell

*icrocontroller consists of

Ans: 3icro!rocessor )e)or, in!ut and out!ut unit

Percentage of the transistor current flos in the collector

Ans: >5;

!*PC operates beteen ON state and O33 state at a

fre,uency ofAns: '( /H@ and &( /H@

& camera ith imaging positron effect ith multiple layer of

silicon detectorAns: Co)!ton ca)era

N*O! is _____ than P*O!

Ans: 8 ti)es

$hat is the diameter of the afer used in manufacturing%

Ans: # to 9 inches

!tandard spacing for +C chip

Ans: $ u) and # u)

&dvanced spacing for +C chip

Ans: ' u)

6CC crystal structure

Ans: Chro)iu)

1PC crystal structure

Ans: inc

&nother name for differential amplifier

Ans: Su%tractor

& factor that determines the filter response

Ans: Da)!ing factor

4nity gain amplifier has ____ input impedance

Ans: E"tre)el, high

*egger is

Ans: used to )easure high resistance

+ncreasing transmitter height

Ans: Decrease ca!acitance and inductance re)ains thesa)e*

4ndergrounding conductor is

Ans: 3a"i)u) at the conductor and )ini)u) at thesheath

& transformer that has a fre,uency range from - 1F

-) "1FAns: Con+erter transfor)er

6


7/18

!urge impedance of cable

Ans: 5(

+deal input impedance of op/amp

Ans: 5(

3ormula for the increase 9 in saturation current

Ans: $BBT$7T'5


8/18


9/18

&dvantages of PC6

Ans: Eli)inates %igger chassis and !oint to !oint)ounting

'nergy to raise the electron to another orbit

Ans: E"citation

+t is used in high voltage and high current application for

most efficient regulatorAns: S-itching regulator

$hat refers to garaging the to ad?ustments of an &c

bridge together in such a ay that changing one ad?ustmentchanges the other in a special ay7 but changing thesecond ad?ustment does not change first%Ans: Orthogonal nulling

Not common sine ave generator

Ans: 3ulti+i%rator

(ange of degrees of freedom

Ans: or/ en+elo!e

Physical bend7 tist7 and reach

Ans: 3ani!ulator

Poor selectivity

Ans: ide %and-idth

+t has amplifier and feedbac"

Ans: Electronic a)!lifier

*aintenance of oscillation

Ans: 2l,-heel effect

3ree electrons collidal to bound electrons causing mere

current carriersAns: A+alanche effect

*agnetic lea"age due to -9 coupling

Ans: Electro)agnetic effect

& particle resulting to an atom of an element combined to

form a compoundAns: 3olecule

P shell number of electrons

Ans: F$

!olid formed by covalent bonding

Ans: Cr,stal

The resistance in the magnetic path to the magnetic lines of

force

Ans: Reluctance

The flux density in an iron core hen the magnetic intensity

is FeroAns: Residual )agnetis)

$hen an electron rises to the conduction band a hole is

created in the valence band7 this called _____Ans: Electron hole !air

Operating temperature of silicon.

Ans: 7'F5 to #5(C

1ighly sensitive material

Ans: 1er)anent )agnet

!mallest ripple voltage

Ans: 3ulti7section LC filter

1ighest tor,ue

Ans: Series )otors

*otivating input in a control system hich is independent

ith the outputAns: Co))and in!ut

#evelopment process of a microcrystal molten

Ans: Cr,stal gro-th

The voltage regulator7 the component used as a

comparatorAns: O!7a)!

+t is not an resistance elding

Ans: Arc -elding

&tom to atom bond on surface ith oxide free surface

Ans: 1ressure -elding

'limination of stray capacitance

Ans: Shielding and grounding

= identical shunt motorAns: Ho!/inson

+n doubleEs Jelvin bridge7 -I to - uI

Ans: (*(5; 7 (*$;

&C voltage fre,uency converter from one form to another

Ans: C,clo con+erter

!"in effect seen at

Ans: High freuencies

+ndicates the address of next instruction

Ans: 1rogra) counter

#rift current is directly proportional to mobility7 diffusion is

directly proportional to concentration of diffusionAns: Einstein relation

ddt in !C(

Ans: 2alse trigerring

+t divides an 13 signal so that a lo fre,uency counter

ould be able to display the operating fre,uencyAns: 1rescaler circuit

(esponds to the variation in incident photon

Ans: Kuantu) detector

#ras less current from circuit under testAns: 2ET03

+t provides very high electrical isolation beteen control c"t

and poer c"t7 has high impedance beteen light sourceand phototransistor.Ans: O!toisolator

+t is used to measure variations by the changing metallic

resistanceAns: ?olo)eter

*ost common bolometric device

Ans: Ther)istor

9


10/18

These are mostly used in robot than &C because it can ith

stand large overload.Ans: DC )otor and ste!!er )otor

Converting sine ave to series of pulses

Ans: Ti)ing 3ar/er Generator

Current regulator alone

Ans: Regulator IC alone

$hat do you call a short circuit having minimum

resistance%Ans: Dead short

$hat is used in measuring ires from number to number

BA%Ans: AG

#ischarge of electricity from a conductor ith a high

potentialAns: Corona

Poer transformer normally operates at ____ alternating

current.Ans: 8( or &(( H@

$hat probable effect on the human body if sub?ected to acurrent of to - m&7 A 1F7 &C or to ; m& #C%Ans: 1erce!tion

$hat probable effect on the human body if sub?ected to a

current of - to ;m&7 A 1F7 &C or ; to -) m& #C%Ans: Sur!rise


current of ; to =- m&7 A 1F7 &C or -) to 8 m& #C%Ans: Refle" action


current of =- to ; m&7 A 1F7 &C or 8 to -A m& #C%Ans: 3uscular Inhi%ition


current of ; to - m&7 A 1F7 &C or -A to B m& #C%Ans: Res!irator, failure


current of over - m&7 A 1F7 &C or B m& #C%Ans: 2atal

$hat is the effect of hydrogen surrounding the anode of a

cell hich increases the internal resistance of the cell%Ans: 1olari@ation

$hat is the anode of a lead acid cell%

Ans: Lead !ero"ide

$hat is the cathode of a lead acid cell%

Ans: S!onge lead

$hat is the anode of a NiCad Cell %

Ans: H,dro"ide

$hat is the anode of a silver Finc cell%

Ans: Sil+er o"ide

$hat is the cathode of a silver Finc cell %

Ans: inc

$hat is the production of the hydrogen gas caused by a

portion of the charge current brea"ing don the ater in theelectrolyte%Ans: Gassing

$hat is the shelf life of lithium organic cell and lithium

inorganic cell%Ans: $( ,ears

+n hat charge is the charging rate determined by the

battery voltage rather than a definite current value%

Ans: 2loating charge

$hat charge is used to "eep a battery at full charge hile

the battery is idle or light duty%Ans: 2loating charge

3loating charge is sometimes referred to as ___ and is

accomplished ith lo current.Ans: Tric/le charge

$hat is used hen a battery must be recharged in the

shortest possible time%Ans: 2ast charge

'lectrical safety precatutions must be observed. & fatal

shoc" can occur from ___ ampere of current.Ans: (*'


11/18

Ans: '


12/18

Can be prevented by arc elding

Ans: Arc flo-

3aying surfaces in one spot

Ans: Resistance s!ot -elding

3aying surfaces

Ans: Resistance sea) -elding

(esistance of the or"

Ans: Resistance -elding

*ass of A/lb +( robot

Ans: 8( /g

#eep penetration

Ans: Su%)erged arc

#eep penetration

Ans: DC re+erse

*edium penetration

Ans: DC straight

3ast elding

Ans: 2lash -elding

-7 to )7 1F elding

Ans: High freuenc, -elding

+mage resolution

Ans: Dot !itch


13/18

& manufacturing unit consisting of to or more or"stations

or machines and the material transport mechanisms andstorage buffers that interconnect them.Ans: cell

& manufacturing unit consisting of to or more cells7 and

the material transport mechanisms and storage buffers thatinterconnect them.Ans: center

&n assembly beteen to closely related rigid members

enabling on member to rotate in relation to the other around

a mobile axis.Ans: co)!le" =oint

The use of an interactive terminal or"station usually ith

graphics capability to automate the design of products. +tincludes functions such as drafting and fit/up parts.Ans: co)!uter aided design BCAD

$or"ing from a product design li"ely to exist in a C data

base7 it encompases the computer based technologies thatphysically produce the product7 including parts programpreparation7 process planning7 tool design7 processanalysis and parts processing by numerically controlledmachines.Ans: co)!uter7aided )anufacturing BCA3

& numerical control system ith a dictated mini or micro

computer that performs the functions of data processingand control.Ans: co)!uteri@ed nu)erical control BCNC

The unit of automatic or" for a robot. $ithin a cycle7

subelements called tra?ectories define lesser but integralelements. 'ach tra?ectory is made up of points here therobot performs an operation or passes through dependingupon the programming.Ans: c,cle B!rogra)

The number of independent ays the end effector can

move. +t is defined by the number of rotational or

translational axes through hich motion can be obtained.Ans: degrees of freedo)

The ?oint that connects the upper arm and forearm on a

robot.Ans: el%o-

&lso "non as end of arm tooling or simply a hand. The

subsystem that lin"s the mechanical portion of the robotGmanipulatorH to the part being handled or or" on7 andgives the robot the ability to pic" yp and transfer partsand>or handle a multitude of different tools to perform or"on parts.Ans: end effector

(obots ith little if any computer poer. Their onlyintelligent functions consist of learning a se,uence ofmanipulative actions7 choreographed by a human operatorusing a teach box.Ans: first generation ro%ot s,ste)

&lso "non as nonservo robot or open robot. & robot ith

stoppoint control but no tra?ectory control.Ans: fi"ed sto! ro%ot

*ultipurpose robots that are adaptable and capable of

being redirected trained or used for ne purposes.Ans: fle"i%ilit, o!erational

&n arrangement of machine tools that is capable of

standing alone7 interconnected by a or"piece transportsystem and controlled by a central computer.Ans: fle"i%le )anufacturing s,ste) B23S

&lso "non as pedestal robot. & robot ith its base

permanently or semi/permanently attached to the floor orbench. !uch a robot is or"ing at one location ith amaximum limited or" area and in many cases servicingonly one machine.Ans: floor )ounted ro%ot

That portion of a ?ointed arm hich is connected to the rist

and elboAns: forear)*

&n overhead mounted7 rectilinear robot ith a minimum of

three degrees of freedom and normally not exceeding six.Ans: gantr, ro%ot*

The grasping hand of a robot7 hich manipulates ob?ects

and tools to fulfill a given tas".Ans: gri!!er

&n approach used to introduce factory automation

technology into manufacturing by selective application of

automation.Ans: islands of auto)ation*

The degree to hich a process has been made automatic.

(elevant to the level of automation are ,uestions ofautomatic failure recovery7 the variety of situations that illbe automatically handled7 and the conditions under hichmanual intervention or action by human beings is re,uired.Ans: le+el of auto)ation

&n electrical sitched positioned to be sitched here a

motion limit occurs7 thereby deactivating the actuator thatcauses the motion.Ans: li)it s-itch

& mechanism usually consisting of a series of segments orlin"s7 ?ointed or sliding to one another7 for grasping ormoving ob?ects7 usually in several degrees of freedom.Ans: )ani!ulator

& method for the control of machine tool systems. &

program containing all the information7 in symbolicnumerical form7 needed for processing a or"piece isstored on a medium such as paper or magnetic tape.Ans: nu)erical control

#eveloping robot programs partially or completely ithout

re,uiring the use of the robot itself. The program is loadedinto the robotEs controller for subse,uent automatic action ofthe manipulator.

Ans: off7line !rogra))ing

!oftare that controls the execution of computer programs7

may provide scheduling7 allocation7 debugging datamanagement7 and other functions.Ans: o!erating s,ste)s

&lso "non as positioning. The consistent movement or

manipulation of an ob?ect into controlled position andaltitude in space.Ans: orientation

The e,uipment used in con?unction ith the robot for a

complete robotic system. This includes grippers7 conveyors7parts positioners and parts or materials feeders that areneeded ith the robot.

13


14/18

Ans: !eri!heral eui!)ent

&lso "non as bend. The angular rotation of a moving body

about an axis that is perpendicular to its direction of motionand in the same plane as its top side.Ans: !itch

&lso "non as photoelement or photosite. & digital picture

or sensor element7 picture is short for picture cell.Ans: !i"el

The act of providing the control instructions re,uired for a

robot to perform its intended tas".Ans: !rogra))ing

The envelope of variance of the robot tool print position for

repeated cycles under the same conditions. +t is obtainedfrom the deviation beteen the positions and orientationsreached at the end of several similar cycles. Contrast ithaccuracy.Ans: re!eata%ilit,

& reprogrammable7 multifunctional manipulator designed to

move a material7 parts7 tools7 or specialiFed devicesthrough variable programmed motions for the performanceof a variety of tas"s.

Ans: ro%ot

The science of designing7 building and applying robots.

Ans: ro%otics

&lso "non as tist. The rotational displacement of a ?oint

around the principal axis of its motion?7 particularly at therist.Ans: roll

& robot ith a computer processes added to the robotic

controller. This addition ma"es it possible to perform7 in realtime7 the calculations re,uired to control the motions ofeach degree of freedom in a cooperative manner to effectsmooth motions of the end effector along predetermined

paths. +t also become possible to integrate simple sensors7such as force tor,ue7 and proximity into the robot system7providing some degree of adaptability to the robotEsenvironment.Ans: second generation ro%ot s,ste)

& controller that operates an application though a fixed

se,uence of events.Ans: seuencer

& robot driven by servomechanisms7 that is7 motors or

actuators hose driving signal is a function of the differencebeteen a commanded position and>or rate is measuredactual position and>or rate.Ans: ser+ocontrolled ro%ot

&n automatic control mechanism consisting of a motor or

actuator driven by a signal that is a function of thedifference beteen a commanded position and>or rate andmeasured actual position and>or rate.Ans: ser+o)echanis)

The manipulator arm lin"age ?oint that is attached to the

base.Ans: shoulder

The maximum velocity at hich a manipulator ?oint can

move a rate imposed by saturation in the servoloopcontrolling the ?oint.Ans: sle- rate

The use of to or more cameras to pinpoint the location of

an ob?ect in a three dimensional space.Ans: stereo i)aging

The detection by a robot though contact of touch7 force7

pattern slip and movement. +t allos for the determination oflocal shape7 orientation and feedbac" forces of a graspedor"space.Ans: tactile sensing

& robot system characteriFed by the incorporation of

multiple computer processors7 each operatingasynchronously to perform specific functions. +t includes aseparate lo level processor for each degree of freedomand a master computer supervising and coordinating theseprocessors7 as ell as providing higher/level functions.Ans: third generation ro%ot s,ste)

The orientation of a vie ith a video camera7 in elevation.

Ans: tilt

& continuous position control response to continuously

changing input re,uirements.Ans: trac/ing

& movement such that all axes remain parallel to hat they

ere.Ans: translation

The ac,uisition7 movement thorugh space7 and release of

an ob?ect by a robot.Ans: trans!ort

The portion of a ?ointed arm that is connected to the

shoulder.Ans: u!!er ar)

&lso "non as the robot operating envelope. The set of

points representing the maximum extent or reach of therobot tool in a directions.Ans: -or/ en+elo!e

The envelope reached by the center of the interface

beteen the rist and the tool7 using all available axismotions.Ans: -or/s!ace

& set of ?oints7 usually rotational7 beteen the arm and the

hand or end effector7 hich allo the hand or end effectorto be oriented relative to the or"piece.Ans: -rist

The angular displacement of a moving ?oint about an axis

hich is perpendicular to the line of motion and the top sideof the body.Ans: ,a-

$hat magnet is used in computer memory circuits%

Ans: Ring )agnet

$hat magnet is used in some meter circuits%

Ans: Horseshoe )agnet

+f the electrons of the atom in a material spin more in one

direction than in the other7 the material ill becomemagnetiFed. This refers to hat theorem%Ans: The Do)ain theor, of 3agnetis)

$hat theorem assumes that all magnetic materials are

made up of magnetic molecules hich7 if lined up in north

to south pole order7 ill be a magnet. +f not lined up7 the

14


15/18

magnetic fields about the molecules ill neutraliFe eachother and no magnetic effect ill be noted%Ans: e%erMs theor, of )agnetis)

$hat do you call a short circuit having minimum

resistance%Ans: Dead short

$hat refers to a continuation of current flo ithin an

electrical cell hen there is no external load%Ans: Local action

The amount of increase in the resistance of - ohm sample

of the conductor per degree of temperature rise above 5Cis called hat%Ans: Te)!erature coefficient of resistance

$hat do you call the resistance to current lea"age through

the insulation%Ans: Insulation resistance

$hat is the common name for enamel insulated ire%

Ans: 3agnet -ire

$hat term is general one and usually applies only to the

larger siFes of conductors%

Ans: Ca%les

The process of applying thin coat of solder to materials prior

to their being soldered.Ans: Tinning

The addition of atmospheric oxygen to metal to form rust7 or

to cause a brea"don in the internal construction of themetal.Ans: O"idation

$hat refers to a continuation of current flo ithin an

electrical cell hen there is not external load%Ans: Local action

& continuous ?ac"et of lead molded around a singleconductor or multiple conductor cable.Ans: Lead sheath

$hat do you call the force exerted on an insulator by the

voltage in a conductor%Ans: Electrostatic stress

The discharge of electricity from a conductor ith a high

potential.Ans: Corona

& material that removes oxides from surfaces to be ?oined

by soldering or elding.Ans: 2lu"

& synthetic mixture of rosins that is flexible and used as an

insulating material. 0enerally used as an insulator for loand medium range voltages.Ans: Ther)o!lastic

The capacity of a soldering iron to generate and maintain a

satisfactory soldering temperature hile giving up heat tothe material being soldered.Ans: Ther)al inertia

$hat is the or"ing voltage of a dry electrolytic capacitor%

Ans: 5(( 0

+f arcing should occur beteen the plates of an oil filled

capacitor7 the oil ill tend to reseal the hole caused by thearcing. !uch a capacitor is referred to as ____ capacitor.Ans: self7healing

The maximum voltage that can be steadily applied to the

capacitor ithout the capacitor brea"ing don GshortingH iscalled ____ of the capacitor.Ans: -or/ing +oltage

$hat is meant by local action%

Ans: Current flo- in cell -ith no e"ternal load*

The left side of the pulse

Ans: Leading edge

The right side of the pulse

Ans: Trailing edge

$hat is the process by hich an atoms gain or losses

electrons%Ans: Ioni@ation

&ny group of energy levels that results from the close

proximity of atoms in a solid.Ans: Energ, %ands

1o many pulsations per revolution have the output

voltage of an elementary single coil dc generator%Ans: T-o

1o many commutator segments are re,uired in a to/coil

generator%Ans: 2our

$hat is the distortion of the main field due to the effects of

armature current%Ans: Ar)ature reaction

$hat type of prime mover re,uires a specially designed

high speed alternator%

Ans: Stea) tur%ine

$hat type of rotor is used in sloer speed alternators%

Ans: Salient !ole rotor

$hat type of rotor is ound in a manner to allo high/

speed use ithout flying apart%Ans: Tur%ine dri+en t,!e rotor

$hat term is used to denote the difference in speed

beteen the rotor hich is alays somehat less than thespeed of the rotating field%Ans: Sli!

$hat mechanical device reverses armature connections inmotors and generators at the proper instant so that currentcontinues to flo only in one direction%Ans: Co))utator

$hat motor characteristic is affected by counter emf%

Ans: S!eed

1o is 'P(O* erased%

Ans: -ith a %urst of ultra+iolet light

$henever data is transferred beteen devices7 it involves

the exchange of prearranged signals. $hat is this processcalled%Ans: Handsha/ing

15


16/18

$hat test is used to chec" for opens Gor to see if the circuit

is complete or continuousH and is accomplished ith anohmmeter%Ans: Continuit, test

$hat type of circuits are caused by some conducting part of

the circuit ma"ing contact either directly or indirectly iththe metallic structure of the ship or chassis%Ans: Ground circuits

!hunts are usually made from hat alloy%

Ans: 3anganin

$hat property of shunt is desired because of the heavy

currents that often flo through shunts producing heat%Ans: ero7te)!erature coefficient

+n #E&rsonval meter7 many turns of fine ire ould be used7

each turn adding more effective length to the coil. The coilis ound on an aluminum frame called ___.Ans: %o%%in

$hat is an important point to remember hen you are

ma"ing an accurate resistance measurement%Ans: ero the )eter each ti)e ,ou select a ne-range*

6DT better than 3'T

Ans: radio recei+er

$ineglass

Ans: 1las)a arc -elding

K plasma

Ans: 1las)a arc -elding

!lo speed

Ans: Salient !ole

1igh speed

Ans: Tur%ine dri+en t,!e rotor

#ifferentiation

Ans: Su%)erged

Comparison solenoid

Ans: Rela, fi"ed core

1uman arm

Ans: Serial ro%ot

+nput display signal voltage

Ans: 0ertical deflection coil

(eplacing #C motor>recently used

Ans: 1ie@o )otor

(apid discharge of electrical energy

Ans: 1ercussion -elding

1ydrogen 'lectrode

Ans: EF('9

3alse

Ans: Air has the concentrated )agnetic field

'lectron gun tube

Ans: CRT

'lectron field tube

Ans: Electron %ea)

*ulticavity Jlystron

Ans: 0aria%le electron s!eed

3use

Ans: Kuic/ %rea/ t,!e

*agnetic fre,uency increases

Ans: 1o-er out!ut decreases

Cause of electrons due to the longitudinal

Ans: 3agnetic field

&long a ?oint

Ans: !set -elding

3astest memory

Ans: 2lash )e)or,

Tungsten electrode

Ans: TIG

4se of non/interlaced monitor

Ans: 2ast gra!h

C*O! disadvantage

Ans: cannot handle high !o-er

TTL

Ans: least susce!ti%le to noise

' stands for

Ans: A)erican ire Electrode

'xceeding ;)53

Ans: ?ra@ing

Not exceeding ;)53

Ans: Soldering

0enerators usedAns: 3agnetic

6attery used as

Ans: che)ical

(esponsible of pulsating #C

Ans: Co))utator

Lo voltage high poer

Ans: Center ta!!ed 2ull a+e

Oldest -@; general magnetic phenomenon

Ans: Colding or cold contact

DointsAns: Direct .ine)atics

'nd effector

Ans: In+erse Direct .ine)atics

Nothing but to memory

Ans: 2lag field

4nanted connection

Ans: 2ault connection

3re,uency synthesiFer used as

Ans: Di+ider

16


17/18

Output amplitude

Ans: A)!litude sta%ilit,

#C motor is preferred as driver in robotics because

Ans: it can -ithstand large o+erload

$elding is not used direct source because

Ans: it is i)!ractica%le to dra- hea+, currents

&tomic hydrogen is long lived because

Ans: ac is used

(3 poer amplifier

Ans: Co))on %ase

Cho"e

Ans: !asses dc %ut not R2

*ultivibrator

Ans: Co))on e)itter or co))on source

&lgorithm better than 2*P

Ans: D,na)ic %alancing

One feet ith small

Ans: Ho!!ing

&utomatic elding

Ans: 5 inter+als

Control grid of a tube

Ans: gate of a 2ET

+mpedance mismatch reactance output

Ans: Transfor)er

Laminated core

Ans: reduces edd, current loss

No load loss but not electrical lossAns: indage

*anganese #ioxide &l"aline &cid

Ans: Al/aline Cell

#ras large amount of current

Ans: Rheostat

+ncrease (L

Ans: I)!ro+ed Efficienc,

!ingle coil

Ans: Ele)entar, generator

B classifications of robotAns: Anthro!ho)or!hic SCARA and articulated

Connects arm and end effectors

Ans: rist

____ for bones7 ____ for muscle and ____for degrees of

freedom.Ans: lin/s actuator and =oints

'arly actuator

Ans: Elastic nanotu%e

Changing of electric energy

Ans: Electroacti+e !ol,)er


18/18

3ormula for +Cith lea"age current

Ans: IC4 PI? Q BPQ'IC?O

+'

Ans: IE4 IC7 IC?O

+CQAns: ICK4 PI?K Q ICEO

+'QAns: IEK4 ICK Q I?K

+ncrease temperature lea"age currentAns: IC?O4 IC?O

BT$7T'

electronic terms for board exam

Documents