2. b it the beez practice 0
DESCRIPTION
questionsTRANSCRIPT
![Page 1: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/1.jpg)
EASY
![Page 2: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/2.jpg)
EASYMATHEMATICS
He was known as the father of modern geometry
![Page 3: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/3.jpg)
EASY
ANSWER
Euclid
![Page 4: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/4.jpg)
EASYEST
a flat conductor separated by an insulating dielectric from a large ground plane that is usually one-quarter or one-half wavelength long
![Page 5: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/5.jpg)
EASY
ANSWER
microstrip
![Page 6: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/6.jpg)
EASYEST
One complete revolution around a Smith Chart represents _________ wavelengths.
![Page 7: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/7.jpg)
EASY
ANSWER
1/2
![Page 8: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/8.jpg)
EASYMathematics
These are circles that have the same center.
![Page 9: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/9.jpg)
EASY
ANSWER
concentric circles
![Page 10: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/10.jpg)
EASYCommunication
The modulated peak value of a signal is 125V and the unmodulated carrier value is 85V. What is the modulation index?
![Page 11: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/11.jpg)
EASY
ANSWER
0.47
![Page 12: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/12.jpg)
EASYCommunication
A mismatched transmission line is also referred to as a ___________ line.
![Page 13: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/13.jpg)
EASY
ANSWER
resonant
![Page 14: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/14.jpg)
EASYCommunications
It is the ratio of the speed of propagation on a line to that of light in free-space.
![Page 15: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/15.jpg)
EASY
ANSWER
velocity factor
![Page 16: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/16.jpg)
EASYElectronics
Which of the following is the most widely used UTP cable that can carry baseband data at rates up to 100 Mbps at a range up to 100m?
![Page 17: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/17.jpg)
EASY
ANSWER
CAT 5
![Page 18: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/18.jpg)
EASYGEAS
This component measures the pulling (or pushing) action perpendicular to the section
![Page 19: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/19.jpg)
EASY
ANSWER
Axial forces
![Page 20: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/20.jpg)
EASYGEAS
It is the point at which there is an appreciable elongation of the material without any corresponding increase of load
![Page 21: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/21.jpg)
EASY
ANSWER
Yield point
![Page 22: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/22.jpg)
average
![Page 23: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/23.jpg)
averageCOMMUNICATION
Determine the phase-shift represented by a 75 ns delay of a 4 MHz signal to a 75-ft cable with a dielectric constant of 2.3.
![Page 24: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/24.jpg)
EASY
ANSWER
108 degrees
average
![Page 25: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/25.jpg)
EASYSOLUTION
Θ = 360 td / T T =1/f = 1 / 4MHz = 250 ns Θ = 360 (75) / 250 = 108 degrees
average
![Page 26: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/26.jpg)
EASYEST
The input to an FM receiver has a S/N of 2.8. What is the frequency deviation caused by the noise if the modulating frequency is 1.5KHz and the permitted deviation is 4KHz?
average
![Page 27: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/27.jpg)
EASY
ANSWER
547.8 Hz
average
![Page 28: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/28.jpg)
EASYSolution
= fm f= sin -1 N/S f= sin -1 1/2.8 f= 0.3652 = (0.3652)(1.5KHz) = 547.8 Hz
average
![Page 29: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/29.jpg)
EASYEST
What circuit is used to return the frequency response of a signal to its normal, “flat” level?
average
![Page 30: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/30.jpg)
EASY
ANSWER
de-emphasis
average
![Page 31: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/31.jpg)
EASYMathematics
Let k be the number of gallons of a 50% silver nitrate solution that are added to 15 gallons of a 30% silver nitrate solution to produce a 35% silver nitrate solution. Let w be the number of sides of a regular polygon whose degree measure of one of the exterior angles is 8. Find the value of (k+w).
average
![Page 32: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/32.jpg)
EASY
ANSWER
50
average
![Page 33: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/33.jpg)
EASYMathematics
In how many distinct points do the real graphs of
Intersect?
average
![Page 34: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/34.jpg)
EASY
ANSWER
2
average
![Page 35: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/35.jpg)
EASYGEAS
It is the maximum safe stress that a material can carry
average
![Page 36: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/36.jpg)
EASY
ANSWER
working stress
average
![Page 37: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/37.jpg)
EASYCommunications
It is the most common means of overcoming the problems of quantizing error and noise.
average
![Page 38: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/38.jpg)
EASY
ANSWER
companding
average
![Page 39: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/39.jpg)
EASY
Electronics
It can be used in a single-stage oscillator circuit to provide a pulse signal suitable for digital-circuit applications.
average
![Page 40: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/40.jpg)
EASY
ANSWER
UJT or unijunction transistor
average
![Page 41: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/41.jpg)
averageGEAS
A large pipe, called a penstock in hydraulic work, is 1.5 m in diameter. It is composed of wooden staves bound together by steel hoops, each 300 sq. Millimetre in cross-sectional area, and is used to conduct water from a reservoir to power a house. If the maximum tensile stress permitted in the hoops is 130 MPa, what is the maximum spacing between hoops under a head of water of 30 m?
![Page 42: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/42.jpg)
AVErage
ANSWER
L = 177 mm
![Page 43: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/43.jpg)
AVErage
SOLUTION
(1000)(9.81)(30)(1.5)L = 2(300x10^-6)(130x10^6)L = 177 mm
![Page 44: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/44.jpg)
averageGEAS
At what angular velocity will the stress in a rotating steel ring equal to 150 MPa if its mean radius is 220 mm? The density of the steel is 7.85 Mg/m^3.
![Page 45: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/45.jpg)
AVErage
ANSWER
628 rad/s
![Page 46: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/46.jpg)
AVErage
ANSWER
ω = (1/0.22)(150x10^6 / 7850)^(1/2) ω = 628 rad/s
![Page 47: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/47.jpg)
Difficult
![Page 48: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/48.jpg)
difficultCOMMUNICATION
It means that the characteristics and performance of an antenna are the same whether the antenna is radiating or intercepting an electromagnetic signal.
![Page 49: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/49.jpg)
EASY
ANSWER
antenna reciprocity
difficult
![Page 50: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/50.jpg)
EASYEST
Which of the following methods is used to lower the resonant frequency of a shortened vertical antenna?
difficult
![Page 51: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/51.jpg)
EASY
ANSWER
top hat loading
difficult
![Page 52: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/52.jpg)
EASYEST
Calculate the gain (relative to an isotropic) of a parabolic antenna that has a diameter of 3 m, an efficiency of 60% and operates at a frequency of 4 GHz.
difficult
![Page 53: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/53.jpg)
EASY
ANSWER
39.8 dBi
difficult
![Page 54: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/54.jpg)
EASYSOLUTION
G = 2 D2/ 2
= 3x108/ 4MHz = 0.075 m
G = 0.62(3)2
0.0752
G= 9474.8 G = 10 log 9474.8G = 39.8 dBi
difficult
![Page 55: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/55.jpg)
EASYMathematics
Team A and B play a series of games. The first to win two games wins the series and Team A has a 70% chance of winning any game. What is the probability that Team A wins the series?
difficult
![Page 56: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/56.jpg)
EASY
ANSWER
0.784
difficult
![Page 57: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/57.jpg)
EASYMathematics difficult
![Page 58: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/58.jpg)
EASY
ANSWER
49
difficult
![Page 59: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/59.jpg)
EASYCommunication
It is a phenomenon caused by any support insulators used at the ends of the wire antenna.
difficult
![Page 60: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/60.jpg)
EASY
ANSWER
end effect
difficult
![Page 61: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/61.jpg)
EASYElectronics difficult
![Page 62: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/62.jpg)
EASY
ANSWER
16.2 Hz
difficult
![Page 63: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/63.jpg)
EASYSOLUTION
difficult
![Page 64: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/64.jpg)
EASYGEAS
A pipe carry steam at 3.5 MPa has an outside diameter of 450 mm and a wall thickness of 10 mm. A gasket is inserted between the flange at one end of the pipe and a flat plate use to cap the end. How many 40-mm-diameter bolts must be used to hold the cap on if the allowable stress in the bolts is 80 MPa, of which 55 MPa is the initial stress?
difficult
![Page 65: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/65.jpg)
EASY
ANSWER
N = 17
difficult
![Page 66: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/66.jpg)
EASY
SOLUTION
N = (3.5x10^6)(0.45 – 2x0.01)^2 / [(0.04^2)(88–55)x10^6] N= 16.18 round upN = 17
difficult
![Page 67: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/67.jpg)
DifficultGEAS
A pipe carry steam at 3.5 MPa has an outside diameter of 450 mm and a wall thickness of 10 mm. A gasket is inserted between the flange at one end of the pipe and a flat plate use to cap the end. What circumferential stress is developed in the pipe?
![Page 68: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/68.jpg)
Difficult
ANSWER
= 75.3 MPa
![Page 69: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/69.jpg)
Difficult
SOLUTION
σ = (3.5)(450 – 2x10) / [2(10)] = 75.3 MPa
![Page 70: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/70.jpg)
DifficultGEAS
A steel rod having a cross-sectional area of 300 sq. Meters and a length of 150 m is suspended vertically from one end. It supports a tensile load of 20 kN at the lower end. If the unit mass of steel is 7850 kg/m^3 and E = 200x10^3 MN/m^2, find the total elongation of the rod.
![Page 71: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/71.jpg)
Difficult
Answer
δ = 54.3 mm
![Page 72: 2. b it the beez practice 0](https://reader034.vdocument.in/reader034/viewer/2022042715/55891040d8b42ac9788b4680/html5/thumbnails/72.jpg)
Difficult
ANSWER
δ = [(7850)(9.8)(150^2) / 2(200X10^9)] + [(20000)(150)(1000^2) / 300(200X10^9)]
δ = 54.3 mm