rt-2013

7/23/2019 RT-2013

http://slidepdf.com/reader/full/rt-2013 1/27

134: Roentgen is a unit of exposure, what is the unit of absorbed dose?

ANSWER: RAD safety

133: An xray unit that genera!!y produ"es good higher bea# intensity and

higher energy distribution uses a

A: Self rectied Circuit

B: Full wave rectifcation circuit

$: Sing!e %hase $ir"uit

&: 'a!f wa(e Re"ti)"ation $ir"uit

13*: +ou ha(e 1 in"h of ser"oniu# to radiograph and a!! you ha(e

a(ai!ab!e is a stee! exposure "hart what te"hniue wi!! you use - for **. /(

stee! is 1, ser"oniu# is * on the radiographi" eui(a!en"e "hart0

A: * n"h - **. 2( 0B: 0.5 Inch Steel ( 220 Kv )

$: * n"h Stee! - 1. /( 0

&: 1 n"h Stee! - **. 2( 0

131: f the fo!!owing whi"h is not parti"u!ate radiation

A: A!pha

5: 5etaC: a!!a

&: Neutron

13.: ne te"hniue for "o#pensating for a wide (ariation of sub6e"t

"ontrast is to

A: n"rease the Exposure 7i#e

5: n"rease the 8i!!i a#pearageC: Increa"e the Ra#iation $ner%&

&: n"rease the b6e"t )!# distan"e

1*9: E!e"tron e#ission of radiography reuires whi"h of the fo!!owing

sour"e of radiation

A: 7her#a! Neutron 5ea#

5: An Epither#a! 5ea#$:A 'ard Ray 5ea#

D: A "o't ra& Bea!

7/23/2019 RT-2013


1*;: 7o de"rease the <eo#etri" =nsharpness the operator "an in"rease

A: the target si>e

B: *ar%et to "+eci!en #i"tance

$: b6e"t to )!# distan"e

&: 7he energy !e(e! of the ioni>ing radiation

1*: f the fo!!owing radio a"ti(e isotope whi"h has on!y 1 <a##a energy

A: $oba!t @.

B: Cae"iu! ,-

$: ridiu# 19*

&: 7hu!iu# 1@

1*@: 7he <radient of a spe"i)" radiographi" )!# "hara"teristi" "ur(e

re!ating )!# density to the !ogarith# of ray exposure (aries pri#ari!y on!y

with the

A: Develo+e# fl! #en"it& re"ultin% 'ro! e/+o"ure an#

+roce""in%

5: 7he Energy of radiation during the exposure

$: &egree of )xing of the de(e!oped )!# prior to washing and drying &: <radient for any spe"i)" xray )!# is "onstant and does not (ary

with either exposure or )!# density

1*: When E(a!uating %orosity with a 7ai!

A: A""ept it regard!ess of si>e un!ess it "ontains a "ra"/

B: Include the tail as the part of dimension

$: n!y e(a!uate !inear indi"ations&: &o not in"!ude tai! as part of di#ensioning

1*4: Energy at #i"rowa(e freuen"y is used to a""e!erate e!e"tron for the

produ"tion of xrays in whi"h the fo!!owing radiographi" sour"es

A: 5etatron

5: Resonant 7ransfer <enerator

$: andegraB <enerator

D: inear Accelerator

7/23/2019 RT-2013


1*3: A radiograph was produ"ed using a energy of 1.. /( f the (o!tage is

"hanged to .. 2( whi!e a!! other "onditions re#ain sa#e se!e"t the side

that best des"ribes the "hange in radiograph

1**: 7he in"orporation-6oining0 of a fo"using "up in the "onstru"tion of an

ray tube wi!!

A: n"rease the eC"ien"y of the tube by pro(iding i#pro(ed "a!!ing

"hara"teristi"

5: Signi)"ant!y in"rease the 2( $apabi!ity of the ray 7ube

C: Si%nifcantl& Increa"e the 1a Ca+ailit& o' the ra& *ueD: Increase the density of electron form the cathode

1*1: 7he A#ount of 7i#es reuired the body to ex"rete to one ha!f of the

in6usted radio a"ted #ateria! is "a!!ed by whi"h one of the ter# !aw

A: EBe"ti(e 'a!f Dife

5: Radio A"ti(e 'a!f Dife

$: Radio!ogi"a! 'a!f !ifeD: Biolo%ical 3al'li'e

1*.: An ex"essi(e we!ding for# the root of a we!d through a ba"/ing ring of

strap whi"h appears as a dar/ i#age so#eti#e surrounded by !ighter

i#ages is referred to as

A: ac4 o' enetration

5: Da"/ of fusion

$: 5urn 7hrough

&: =n"onsu#ed nsert

A 5

C &

C o n t r a

s t

Graininess

7/23/2019 RT-2013


119: n order to uti!i>e the prin"ip!es of geo#etri" en!arge#ent -p!a"ing the

)!# at a distan"e fro# the spe"i#en0

A: 7he sour"e to Spe"i#en distan"e #ust be one ha!f the sour"e to )!#

distan"e

5: *he Source o' the ra#iation !u"t e e/tre!el& S!all

$: A 8agneti" o"using $oi! #ust be used near the board of the xray

tube

&: 7he spe"i#en #ust be of unifor# thi"/ness

11;: Sin"e da#age in spe"i#ens do not produ"e the ne"essary

ray $ontrast, an ray opaue Fuid shou!d be app!ied to the surfa"e of the

spe"i#ens da#aged regionA: $ast ron

5: So!id %rope!!ant

$: $o#posite

&: We!d

67$S*I89 IS 98* C8RR$C*

11: f it were ne"essary to radiograph a G H 7hi"/ Stee! %rodu"t whi"h of the fo!!owing ga##a ray sour"e wi!! be #ost !i/e!y to be used

A: Coalt 0

5: 7hu!iu# 1.

&: ridiu# 19*

$: $esiu# 13

11@: As a genera! ru!e the shape of the "hara"teristi" "ur(e "an on!y be"hanged by

A: Chan%in% the ener%& level o' the e/+o"in% ra#iation

5: $hanging the de(e!op#ent "ondition- te#perature i##ersion ti#e

et"0

$: $hanging the #ateria! type of the spe"i#en

&: $hanging the thi"/ness of the !ead s"reen

11: A radiograph is ta/en at a (o!tage of .. /( if the (o!tage is in"reased

to @.. 2( if a!! the "ondition re#ain the sa#e

7/23/2019 RT-2013


A: the graininess of the radiograph wi!! be in"reased signi)"ant!y if a

high speed )!# is used

5: 7he graininess of the radiograph wi!! de"rease signi)"ant!y if a !ow

speed )!# is used

$: 7he graininess of the radiograph wi!! be in"reased signi)"ant!y if a

"!ass 1 )!# is used

D: *here will e a little chan%e in the %rainine"" o' the

ra#io%ra+h

114: Reti"u!ation resu!ting in pu"/ered or net !i/e )!# surfa"e is "aused by

A: $ri#ping i!# after Exposure

B: Done $/tre!e te!+erature chan%e while +roce""in%

$: Water or &e(e!oper on unpro"essed )!#&: Ex"essi(e ob6e"t to )!# distan"e

113: A )!# artifa"t "aused by bending the )!# abrupt!y and is !ighter in

density in the area of bending is "a!!ed

A: S"reen 8ar/

5: $he#i"a! Strea/ing

$: $ri#p #ar/ after exposureD: Cri!+ !ar4 e'ore e/+o"ure

11*: f )!# density is in"reased to *3 the a"tua! a#ount of !ight

trans#itted through the )!# wi!! be

A: n"reased by about 1. I

B: Decrea"e & aout -- ;

$: n"reased by about @ I&: &e"reased by about ;. I

111: 7he ray bea# generated fro# the target in an xray tube is

A: "o#posed of two wa(e!ength depending on the target #ateria!

B: ol&chro!atic

$: 8ono"hro#ati"

&: $o#posed of 1 Wa(e !ength depending on the target #ateria!

7/23/2019 RT-2013


11.: An ato# in whi"h an e!e"tron has #o(ed to 1 of higher energy !e(e! is

said to be whi"h of the fo!!owing

A: %o!yenergeti"

5: 8ono energeti"

$: oni>ed

D: $/cite#

1.9: What is pri#ary prob!e# with sour"e of "oba!t @. in ex"ess of 1... "i

A: 'a!f !ife

B: Self Absorption

$: Ato# by "i

D: Beta Radiation

1.;: 7he Shie!ding reuired to redu"e the intensity of a 1. "urie "oba!t @.

sour"e to #RJhr at 1 #eter wou!d be approxi#ate!y

A: @ n"h of $on"rete

5: 3G* n"hes of Dead

C: -.5 Inche" o' ea#

&: * n"hes of Dead

1.: 7he ratio of the tota! xradiation power produ"ed to tota! power of the

i#pinging e!e"tron bea# on the target bea# is referred to as

A: 7arget %otentia!

5: 7arget Si>e &eter#inator

$: 7arget EC"ien"y

D: Focal S+ot Selector

1.@: When using a on strea# pro6e"tion te"hniue used to deter#ine the

wa!! thi"/ness of a pipe a !ong exposure ti#e is reuired be"ause of the

o(er radiation at the end of the pipe

A: 7he wa!! thi"/ness shows up thinner

5: 7he Wa!! thi"/ness shows up thi"/er

$: 7he Wa!! shows up !i/e pitting "orrosion under inside of the pipe

&: 7he wa!! shows up !i/e pitting on the outside of the pipe

7/23/2019 RT-2013


1.: i!# "ontrast is !east were the "hara"teristi" "ur(e has

A: 7he !east s!ope

5: A =n"hanging S!ope

C: *he reate"t Slo+e

&: A $hange in S!ope

1.4: perabi!ity of a sur(ey instru#ent used in the industria! radiography

shou!d be "he"/ed at whi"h of the fo!!owing inter(a!s

A: n"e per +ear

5: E(ery Six 8onths

C< Be'ore $ach 7"e

&: 7hree 7i#es %er +ear

1.3: n a radiograph the sharpness of the transition between diBerent

densities is produ"ed by sharp!y de)ned sub6e"t edges is /nown as

A: Radiographi" $ontrast

B: Ra#io%ra+hic Defnition

$: Radiographi" &ensity

&: Radiographi" Sensiti(ity

1.*: Whi"h of the fo!!owing parts of the hu#an body is !east eBe"t byradiation

A: Extre#ities -'and, eet0

5: Ner(e $e!!

$: nterna! rgans

D: S4in Cell"

1.1: n %ra"ti"a! radiography with on!y 1 ex"eption a!! exposing radiation is

po!y"hro#ati" whi"h sour"e used for radiography is non po!y"hro#ati"A: Super o!tage ray

5: 7hu!iu# 1.

C: Cae"iu! ,-

&: <a##a Rays

1..0 what distan"e pro(iding a reading of #ore than 1 RJhr K !ess than *

RJhr-assu#e a *. "i R 19* sour"e0 ?

A0 4 feet

50 *. feet

$0 1 feet

7/23/2019 RT-2013


D) = 'eet

990 A #eta!!i" )!ter is p!a"ed between the sour"e and ob6e"t is used to ?

A0 Redu"e short wa(e !ength radiation

B) Re#uce lon% wave len%th ra#iation

$0 n"rease sub6e"t "ontrast

&0 Nor#a!i>e radiation

9;0 Whi"h gas is on!y used in the "ha#ber of a gaseous ioni>ation

dete"tor?

A0 "o*

B)9

$0o*

&0 "o

90 An una""eptab!e Faw has been identi)ed in a L in"h thi"/ p!ate

"on"erning stereo radiography whi"h of the fo!!owing is true ?

A0 A sing!e radiograph is exposed using * radiation sour"e positioned

para!!e! to the #ediu# Mno

50 Re!ationship between Faw height -distan"e fro# p!ate surfa"e0 is

exponentia! to i#age shiftC) the !ove!ent o' the "ource etween 2 re>uire# e/+o"ure"

i" e>ual to the tuular #i"tance o' hu!an e&e"

&0 sour"es are position on the opposite sides of the p!ate 1;. degrees

apart

9@0 7hu!iu# a"ti(ated sodiu# iodide "rysta!s "an be used as the #ore

radiation dete"tor be"ause they ?A)$!it" +hoton" o' vi"ile li%ht in a"orin% %a!!a ra&"

50 E#its rays photons in absorbing ga##a rays

$0 "hange gashes state that "an be dete"ted by gashes ioni>ation

dete"tors

&0E#its !ow !e(e! sounds in absorbing ga##a raysG

9: Re!ati(e!y s#a!! physi"a! si>e of indi"ati(e of a radio isotope sea!ed

sour"e of

A: Dow energy !e(e!

7/23/2019 RT-2013


B: 3i%h "+ecifc activit&

$: 'igh Absorption

&: Dow ha!f !ife

94: 'ow #any rJhr $ou!d be expe"ted at a )!# p!a"ed 4#eter fro# "oba!t

@. sour"e after G3 years the origina! a"ti(ity was 1.. $uries

67$S*I89 IS 98* C$AR M A7ER G3 +, . $i M S, A9S?$R @ R3R

93: 7he Narrow para!!e! !ines in the &ire"tion of )!# tra(e! in an auto#ati"

pro"essor are #ost !i/e!y of

A: #proper!y Ad6ust i!# <ates

5: 5ui!d =p oreign 8atter on ro!!ers or #proper Ro!!er $!earan"e in the&e(e!oper Se"tions

C: 1inute De+o"it" le't on a roller o' a newl& in"talle# or

recentl& cleane# +roce""or

&: oreign %arti"!e fa!!ing on the )!# as it enters the pro"essor

9*: A in" $ad#iu# Su!phide !uoros"opi" s"reen whi"h is "ontinua!!y

exposed to bright day !ight sun!ight or other sour"e of = !ight radiation wi!!A: Need to be rea"hed to regain it origina! Fuores"en"e

B: Beco!e Di"coloure# an# lo"" "o!e o' it" rilliance

$: Reuire a higher !ow (o!tage setting of the xray generator to

produ"e a satisfa"tory i#age

&: be"o#e britt!e and easi!y da#aged

91: A Sing!e 5utt We!d Ooint is radiographed and a wi#e #en"e area inthe center o' the we!d i#age is seen on the )!#, what wou!d be the #ost

!i/e!y interpretation asso"iated with this i#age

A: Root $on"a(ity

B: Burn *hrou%h

$: Ex"essi(e %enetration

&: =nder"ut

9.: 7he b!urring of the out!ine of a radiographi" i#age "aused by )!# grain

si>e and De(e! rientation Energy is "a!!ed

7/23/2019 RT-2013


A: &igita! =nsharpness

5: nherent =nsharpness

C: eo!etrical 7n"har+ne""

$: b6e"t =nsharpness

7 5E $ontinuedPP N G

9.: 7he b!urring of the out!ine of a radiographi" i#age "aused by )!# grain

si>e and De(e! rientation Energy is "a!!ed

A: &igita! =nsharpness

B: Inherent 7n"har+ne""

$: <eo#etri"a! =nsharpness

$: b6e"t =nsharpness

;9 : n * 17 Radiography what is the %enetra#eter thi"/ness re!ating to the

thi"/ness of the sub6e"t being radiographed

A: 1 I

B: 2 ;

$: 3 I

&: 4 I

;;: ne way to a"hie(e high radiographi" )!# "ontrast is to use

A: i!# with high gradient

B: Fil! with ow ra#ient

$: n"reased &e(e!op#ent 7i#e

&: &e"reased &e(e!op#ent 7i#e

;: Whi"h of one the fo!!owing is not an essentia! fa"tor in a )!# i!!u#inator

A: it #ust pro(ide !ight intensity that wi!! i!!u#inate the area of interest

5: t shou!d ha(e a (ariab!e !ight intensity "ontro!

$: t shou!d pro(ide #as/ing to a(oid g!air fro# edges of the radiograph

or !ow density areas

D: It !u"t e a lui"hwhite color li%ht

;@: t is a""eptab!e pra"ti"e to (iew radiograph

7/23/2019 RT-2013


A: n a roo# with suC"ient !ighting to "o#pensate for the bright g!air

"o#ing for# the i!!u#inator

5: n a roo# with SuC"ient Dighting so that the reFe"tion density dJR

"an be de)ned as the !ogarith# of the n"ident !ight intensity -o0 to the

reFe"ted !ight intensity -r0

C: In "o!e viewe# li%htin% 'ree 'ro! reection that !a& hin#er

fl! inter+retation

&: an area that is tota!!y dar/

;: &ar/ %at"hes on a )!# "an be "aused by

A: Ex"essi(e Rinsing before de(e!op#ent

5: S"rat"hed e#u!sion after exposure

C: Dro+" o' f/er 'allin% into the fl! e'ore #evelo+!ent&: &rops of de(e!oper fa!!ing on to the )!# before de(e!op#ent

;4 f the ha!f (a!ue !ayer of a spe"i)" #ateria! is .G n"h what thi"/ness of

that #ateria! wou!d be reuired to redu"e the radiation !e(e! to 1*; #RJhr

to * #RJhr

A: 1G; n"hes

5: *G.@ n"hesC: - Inche"

&: 4 n"hes

;3: At whi"h of the fo!!owing energies is )!# =nsharpness is !i/e!y to be the

!east

A: 250 Kv

5: 3.. 2($: 4.. 2(

&: 1... 2(

;*: <i(en the infor#ation be!ow "a!"u!ate the #axi#u# =g, Spe"i#en

7hi"/ness 1H, Sour"e Si>e 1J9Q &ia#eter, Sour"e to b6e"t &istan"e *4Q

A: 0.005 Inch

5: .G.1. n"h

$: .G.*3 n"h

&: .G.33 n"h

7/23/2019 RT-2013


;1: t is de"ide to doub!e the exposure of a radiograph by "hanging the

fo"a! )!# distan"e assu#ing the origina! distan"e to be 3 feet what wi!! be

the new distan"e be ?

A: ,.-- Feet

5: * eet

$: *G1* eet

&: *G34 eet

;.: What are a!pha parti"!es?

A: 3eliu! 9ucleu"

5: 'ydrogen Nu"!ei

$: 1 %roton, 1 Neutron&: $harged Negati(e!y

9: n the nu"!ear energy )e!d so#eti#es it is ne"essary to deter#ine ue!

&istribution within a gi(en fue! e!e#ent this "an be a""o#p!ished by

p!a"ing the radiographi" )!# in "onta"t with the fue! e!e#ent resu!ting in

exposure of the )!# to radioa"ti(ity this pro"ess is /nown as

A: 9eutron Ra#io%ra+h&

5: Auto Radiography

$: !uoros"opy

&: 8i"ro radiography

;: When #easuring the fo"a! spot of an xray tube using the pin ho!epro6e"tion #ethod where if the pin ho!e- in a sheet of !ead0 p!a"ed during

radiography

Next to the )!#

Next to the fo"a! spot

the distan"e fro# the tube to the )!#

11J* the distan"e fro# the tube to )!#

: %hotons of penetrating radiation with !onger Wa(e!ength

A: 'a(e #ore energy than short wa(e !ength than photons

7/23/2019 RT-2013


5: 7ra(e! further through #atter than sharp wa(e!ength photons

C: 3i%her velocitie" than "horter wavelen%th +hoton"

&: 'a(e !onger energies and !ess penetrating power than sharp

wa(e!ength photons

@: A diBeren"e between a radiograph and a rea!ti#e radiographi" i#age

is

A: *he real ti!e i!a%e ha" %reater re"olution

5: 7he radiograph wi!! ha(e a !ower sensiti(ity

$: Rea!ti#e radiograph reuire the use of spe"ia! isotopes

&: s i#age is a re(erse of the otherG

: n a radiograph of a butt we!d in a stee! p!ate wanted to !ess denseindi"ation !o"ated rando#!y through out the we!d area indi"ate

A: n"!usions of Radio graphi"a!!y &ense 8ateria!

5: Spattered <as %orosity

C: ?el# S+atter on the +late "ur'ace

&: =nder $utting

4: An Asse#b!y that "ontains a nu#ber of (ery #inute "o#ponents isRadiographed, in e(a!uating the fo!!owing radiograph whi"h one of the

fo!!owing is "orre"t

A: =se a . 8agni)er

B: 7"e a -5 / 1a%nifer

$: =se a 8i"ro#eter

&: =se a 8agni)er with a Fores"ent bu!b

3: What wi!! the shape of a "hara"teristi" "ur(e not te!! u about the ray

i!#

A: ts Speed

5: ts $ontrast

C: It S+ectral Sen"itivit&

&: ts <raininess

7/23/2019 RT-2013


*: White "res"ent $ shaped #ar/s on the exposed )!# are #ost !i/e!y

"aused by

A: Cri!+in% fl! a'ter e/+o"ure

5: $ri#ping i!# 5efore exposure

$: Sudden Extre#e te#p "hange whi!e pro"essing

&: War# or Exhausted ixer

1: Ex"essi(e exposure of )!# to !ight prior to de(e!op#ent of )!# wi!!

probab!y resu!t in

A: A foggy i!#

B: oor Defnition

$: Strea/s

&: +e!!ow Stain

.: What is the #axi#u# re"o##ended 2 that shou!d be used in the pin

ho!e pro6e"tion #ethod of #easuring fo"a! spot si>e ?

A: 3.. /(

5: @.. /(

$: 9.. /(

D: ,200 4v

@9: 'ow !ong "ou!d a person wor/ ; feet fro# a . "urie "o @. sour"e that

is shie!d by 3Q of !ead and re"ei(e a dose of 3.. #R

A: .G. 'rs

5: 1G1@ 'rs

$: 1G*1 'rs

D: ,.E 3r"

@;: Radio graphi"a!!y "o!d shut "ou!d #ost !i/e!y appear as

A: A !ight area on the )!# presenting a #ore dense #ateria!

5: A dar/er area si#i!ar to a s!ag in"!usion

C: inear Dar4 in#ication with a "trai%ht curve or irre%ular

a++earance

&: A feathery Spider !i/e ndi"ation Si#i!ar to a hot tear

7/23/2019 RT-2013


@: =sing the %rin"ip!es of #age for#ation whi"h of the fo!!owing

state#ents is true

A: n"reasing the si>e of the fo"a! spot wi!! i#pro(e the )!# "ontrast

5: 7he use of ntensifying S"reens "an redu"e exposure ti#e

C: An Increa"e in oect to fl! #i"tance will i!+rove #efnition

&: Restri"ting the ang!e of the "one of radiation to 3. &egree #axi#u#

to redu"e distortions

@@: An E!e"tro#agneti" radiation e#itted when e!e"trons are s!owed down

by the e!e"tri"a! )e!d in their passage through #atter is /now

AT 7he $ro#pton eBe"t

5: 5rau#stru!ung EBe"tC: hotoelectric $Gect

&: %hoton &isintegration

@: A "asting pro"ess in whi"h the #eta! in6e"tion pro"ess produ"es a for"e

a"ting on the #eta! to i#pro(e its densities towards the outside of the

#ou!d is aBord to as ?

A: n(est#ent $asting5: $ontinuous $asting

C: Centri'u%al Ca"tin%

&: %er#anent #ou!d "asting

@4: 7he appropriate a"ti(ity of a . "urie "o @. sour"e after 3 years is

A: -0.2 Curie"

5: 4 G3 $uries$: @G4 $uries

&: @.G* $uries

@3: &uring "asting of a #eta! in to a #ou!d, "ra"/ing so#eti#es o""urs due

to the shape and rigidity of the #ou!d and stress end up during the "oo!ing

pro"ess whi"h ex"eed the strength of the #eta! this "ra"/s or defe"ts

appear in a radiograph as dar/ !ine or #ay be

A: $o!d Shift

B: Col# Shut

7/23/2019 RT-2013


$: 'ot tear

&: <as 'o!es

@*: !uores"ent s"reens are typi"a!!y "oated with phosphorous su"h as >in"

"ad#iu# su!phate whi"h produ"es (isib!e ye!!ow !ight with a e#ission pea/

of approxi#ate!y

A: 50 n!

5: . n#

$: 44 n#

&: ;@. n#

@1: 7he proportiona! re!ation between #easured ga##a ray intensity and

nu#ber of "uries does not ho!d for !arge physi"a! sour"e si>e with !owspe"i)" a"ti(ities be"ause of

A: Sel' A"or+tion

5: 5ui!d =p

$: nterna! &e"ay

&: ission &osses

@.: A sing!e butt we!d 6oint is radiographed in a 1*H !ength a * areas of *H and 3Q !ength are obser(ed where a higher density in this #ateria! the

o(er the "o#p!ete width of the )na! path is obser(ed ,

PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPG

A: (er!ap

5: Root $on"a(ity

$: n"o#p!ete %enetration

D: 7n#er Fill

9: 7he igure be!ow shows the dire"t ray Spe"tru# sensiti(ity "ure(e

fro# for a )!# used for radiation #onitoring one fa"tor of signi)"an"e is

that this )!# is !ess sensiti(e in the (i"inity of

7/23/2019 RT-2013


;: Whi"h of the fo!!owing "annot be deter#ined by gauging with an

appropriate radiation sour"e and dete"tor

A: 8ateria! &ensity

5: 8ateria! 7hi"/ness

C: 3&#ro%en Content

&: Surfa"e Strain

'ow is the A"ti(ity of a <a#a Sour"e deter#ined

A: 5y di(iding the origina! sour"e strength by its age in years

5: 5y #u!tip!ying its sour"e strength by its age in years

$: by di(iding the sour"e strength by ots ha!f !ife

D: 'ro! #eca& chart tale o' the %iven "ource an# !ulti+l&in%

the 'actor & the ori%inal "ource activit&

@: Whi"h of the fo!!owing is an ad(antage of doub!e )!# !oading ?

A: Dess S"atter

5: &e"rease of )!# "ontrast better de)nition

C: *he atitu#e o' rea#ale thic4ne"" can e increa"e# & u"in%

a co!nination o' "in%le an# co!+o"ite viewin% techni>ue

&: 5etter Sensiti(ity

ro# here R

'ow is the A"ti(ity of a <a#a Sour"e &eter#ined?

A: By dividing the original source strength by its age in years

5: 5y #u!tip!ying its sour"e strength by its age in years

$: by di(iding the sour"e strength by its ha!f !ife

&: fro# de"ay "hart tab!e of the gi(en sour"e and #u!tip!ying the fa"tor

by the origina! sour"e a"ti(ity

@: Whi"h of the fo!!owing is an ad(antage of doub!e )!# !oading?

A: Dess S"atter

5: &e"rease of )!# "ontrast better de)nition

C: *he atitu#e o' rea#ale thic4ne"" can e increa"e# & u"in%a co!ination o' "in%le an# co!+o"ite viewin% techni>ue

&: 5etter Sensiti(ity

7/23/2019 RT-2013


: f the 'a!f !ife of $oba!t @. is G3 +ears and its Rh#J$i is approxi#ate!y

1G3 what wi!! be the Rh#J$i (a!ue be in 1.G@ years

A: ,.-

5: .G@*

$: .G313

&: .G1

4: 7wo sotopi" posses two diBerent a"ti(ity (a!ues

5: 'a(e a Shorter Wa(e!ength 'a!f !ife and the Sour"e with 'igher

%rodu"e 'arder <a##a Rays than the Sour"e with a higher spe"i)"

a"ti(ity

D: e o' lar%er +h&"ical "iHe than the "ource with hi%her "+ecifcactivit&

?3A* IS *3$ A9S?$R 8F A

3: n a group of i!# $hara"teristi" $ur(es p!otted on a graph whi"h of the

)!# wi!! be the fastest )!# ?

A: *he Fil! with i" he one that lie to the le't o' other curve"

5: 7he astest i!# is the ne that !ies to the right of outher "ur(es$: 7he astest i!# $ur(e s the one whose "harteristi" $rosses at!east

on of the other "rosses on of the

&: t is Not %ossib!e to dete"t i!# Speed fro# re!ati(e "hara"teristi"s

*: A 7e"hniue that is used "o##on!y for s#a!! dia pipes that is 3Q dia

where by an entire "ir"u#ferentia! we!d "an be radiographed in a #ini#u#

nu#ber of exposureA: A &oub!e wa!! exposure sing!e wa!! exp

5: A &oub!e exp sing!e (iew

$: %anora#i" Exp

D: $lli+tical $/+

1: 7he n"orporation of a )!# de(e!oped radiation sour"e

A: Re#o(es the Shorter Wa(e!ength %ri#ary Radiation

B: $nhance" Ra#io%ra+hic Contra"t

$: Absorbs S"atter Radiation fro# the Spe"i#en

7/23/2019 RT-2013


&: Re#o(es Softer $o#ponents of %ri#ary Radiation -N7E: N

$8%NEN7S0

98*$: C3$CK 67$S*I89 89C$ AAI9

.: f the o!!owing Sour"es Whi"h has !owest RJhJ"i

A: r 19*

B: Ce"iu! ,-

$: $oba!t @.

&: Radiu#

N7E: $'E$2 , 7'=D=8 S 7'ERE, 7'A7 S 7'E ANSWERG

49: n the =se of Dead S"reens assu#ing no other added fa"tors theexposure ti#e wi!! in"rease as the )!tration of the pri#ary bea# be"o#es

#ore do#inant three fa"tors aBe"t this do#inan"e

7he 2i!oo!tage, 7he nature of the sub6e"t #ateria!-in"!uding it thi"/ness0

and the third fa"tor, What is the 7hird a"tor ?

A: Dead 7hi"/ness of the front s"reen

5: Dead thi"/ness of the 5a"/ s"reenC: Focal fl! #i"tance

&: 7he #i!!ia#pearage

4;: n a $o#parison of radiographs #ade at 3.. 2 (ersus radiographs

#ade at ; 8e( the higher energy radiograph for#s

A: <reater $ontrast

5: <reater SharpnessC: e"" Scatter Ra#iation relative to +ri!ar& ea! inten"it&

&: <reater S"atter Radiation re!ati(e to pri#ary bea# intensity

4: Radiographi" Sensiti(ity in the "ontext of the #ini#u# dete"tab!e Faw

si>e depends on

A: enetra!eter *hic4ne""

5: 7he Sharpness of the #age on the i!#

$: 7he $ontrast of the Faw i#age on the )!#

&: Sub6e"t to the density

7/23/2019 RT-2013


4@: When Radiographing to the **7 ua!ity !e(e! a %enetra#eter for#ed to

.G n"hes of stee! has a thi"/ness of

A: 0.25 !!

5: .G.* n"h

$: .G. ##

&: .G.. n"h

4: !uoros"opy diBers fro# radiography

A: t Reuires !uores"ent s"reens to re"ord i#age on )!#5: !uoros"opy reuires 'igh speed )!# to re"ord

$: t reuires &igita! S"reen to prote"t ba"/ s"atter

D: in Fluoro"co+ic /ra& i!a%e i" a"ore# on the uore"cent

"creen rather than recor#e# on fl!

44: Assu#ing 2 and ther $ondition assured "onstant a "hange in #A wi!!

"ause a "hange in radiation intensity as fo!!owsA: Directl& ro+ortional to the tue current

5: ;; I of the $urrent

$: n(erse!y proportiona! to the tube "urrent

&: Not proportiona! to the tube "urrent

43: Why are (a"uu# "assettes used to obtain the sharpest possib!e

i#ages? When perfor#ing radiography with s"reen of any type?A: 7o re#o(e the air fro# inside the "assette

B: For the e"t Screen Fil! Contact

$: 7o redu"e air s"atter to a #ini#u#

&: 7o n"rease the E!e"tron %rote"tion fro# the s"reens

4*: or de(e!oping so!utions that are abo(e the re"o##ended standard

de(e!op#ent ti#e whi"h of the fo!!owing is true

A: i!# sensiti(ity wi!! in"rease due to resu!ting "ontrast

5: 7he possibi!ity of reti"u!ation is redu"ed

7/23/2019 RT-2013


C: *he reu"ale li'e o' the #evelo+in% "olution will e re#uce#

&: 7he inherent fog !e(e! of the )!# wi!! be redu"ed

41: What #ateria! is genera!!y preferred as an a!!oy e!e#ent for !ead

s"reens?

A: Anti!on&

5: 7in

$: $opper

&: in"

4.: 7he fa"t that the ea"h so!id "rysta!!ine substan"e produ"es its own

"hara"teristi" x ray patterns is the basisA: eroradiography

5: !uoros"opy testing

$: %o!y#orphi" testing

D: ra& #iGraction e/a!ination

39: Range of ob6e"t thi"/ness o(er whi"h densities are obtained that are

satisfa"tory for !i"inter+retation is a #easure of the (inter+retation i"correct one)

A: Sub6e"t $ontrast of a Radiograph

5: Sensiti(ity of a radiograph

C: atitu#e o' a ra#io%ra+h

&: 7er#ination of a radiograph

3;: or !arge ga##a sour"es radiation intensity #ay not be proportiona! to

the sour"e a"ti(ity due to the eBe"ts of

A: n(erse &e"ay

B: Sel' A"or+tion

$: 8ono"hro#ati" Absorption

&: Uuantu# &ea"ti(ation

3: Whi"h of the fo!!owing is regarded as a p!anar fau!t ?

A: ac4 o' "i#e wall 'u"ion

7/23/2019 RT-2013


5: %orosity

$: 7ungsten in"!usion

&: 5!ow 'o!es

3@: 7he Uuantity of radiation rea"hing a unit area of )!#?

A: I" the +ro#uct o' ra#iation inten"it& an# ti!e

5: t is the intensity per unit ti#e

$: t is dire"t!y proportiona! to intensity and in(erse!y proportiona! to

ti#e

&: aries exponentia!!y with ti#e and dire"t!y with intensity

3: Dead s"reens used in )!# "assettes absorb?

A: proportiona!!y #ore ront Wa(e !ength radiation than Dong

wa(e!ength

5: 7he Sa#e a#ount of Dong or ront Wa(e!ength radiation

C: ro+ortionall& !ore "catter ra#iation than +ri!ar& ra#iation

&: No Radiation

34: &iBra"tion #otte!ing "an be redu"ed and often e!i#inated by

A: Raising the a#perage

B: Rai"in% the 4ilo volta%e

$: =sing Dead S"reens

&: n"reasing the Sour"e i!# &istan"e

33: Ex"essi(e "ontrast "an be "aused byA: (er Exposure $o#pensated by pro!onged de(e!oping ti#e

5: Exhausted de(e!oper

$: =nder exposure "o#pensated by redu"ed de(e!oping ti#e

&: 7he =se of * sound radiation - 7he =se of S"atter Radiation 0

9ote : an"wer will e u"e o' "catter ra#iation in"tea# o' 2

3*: i!#s that re#ain between the !ead s"reens too !ong in high te#p and

high hu#idity #ay

A: 'a(e in"reased speed

7/23/2019 RT-2013


5: 'a(e de"reased speed

C: Beco!e 'o%%e#

&: 5e"o#e #ott!ed

31: An artifa"t "ause by the bui!d up of foreign #atter on ro!!ers in an

auto#ati" pro"essor wou!d be A: A Dight Dea/

5: A S"reen 8ar/

C: A +re""ure 1ar4

&: A $ri#p 8ar/

3.: Whi"h of the fo!!owing sour"es of radiation wou!d you se!e"t for

radiographing a H thi"/ we!ded a!u#iniu# spe"i#en

A: $oba!t @.

5: * 8e( 5etatron

$: 1 8e( ray <enerator

D: 00 Kv @ra& enerator

*9: Why is it so#eti#es ne"essary to re#o(e we!d ripp!es or surfa"e

irregu!arities by grinding during radiography

A: 7o %re(ent &a#age to e#u!sion of )!#

5: 7o redu"e S"atter radiation

C: *o a""ure ro+er Inter+retation&: 7o in"rease intensi)"ation a"tion of )!#

*;: $ir"u!ar indi"ations on a )!# whi"h are !ighter in density than the

surrounding area #ay be rando#!y distributed on the )!# area are "aused

by

A: &irt on the i!#

5: Air bends

C: re""ure 1ar4"

&: inger 8ar/s

7/23/2019 RT-2013


*: 7he Spe"i)"ations for a 4.. 2( ; #i!!i a#pere ray #a"hine where !ost

using the pin ho!e te"hniueG Whi"h of the fo!!owing "an be deter#ined?

A: A p!ot of the heat eBe"t of the anode

5: 7he EBe"ti(e fo"a! spot si>e

$: A ray &istribution <raph

D: *he Actual Focal S+ot SiHe

*@: Water Spots on a i!# "an be #ini#i>ed by

A: Rapid &rying of Wet i!#

B: I!!er"in% the wet fl! 'or , or 2 !inute" in a wet a%ent

$: 5y =sing resh ixer So!ution&: 5y "as"ading water during the rinse "y"!e

*: <E<ER M 8=DDER - <8 0 types of instru#ents are not suitab!e for use

in #onitoring )!# exposures with betatron high energy radiation

A: 'igh energy radiation photons "annot ex"ide the <8 tubes to Fash

o(er in a(a!an"y #ode

5: 7he <8 7ubes saturate on ea"h pu!se "y"!e of intense radiation so asto "ount "y"!es on!y

$: 7he Signa! %u!se rate is "onstant and independent on the type of

in"ident penetrating radiation

D: *he 1 *ue" re"+on#" onl& to "i%nal ioniHin% event" with

hi%h "en"itivit&

*40what is the =g of the i#age of a ob6e"t !o"ated * in"h be!ow the sour"eside surfa"e -away fro# the )!# 0 of a 3 in"h thi"/ test ob6e"t when

radiographed with an ;## fo"a! spot at *4 in"hes fo"used )!#?

a0G.. in"h

b0G.14 in"h

"0G.3.in"h

#).05 inch

9ote: 6ue"tion i" wron%. So we con"i#er S8D i" 22J a"e# on

2J ......8FD

7/23/2019 RT-2013


*30 An ex"e!!ent inti!ation "rysta! responsi(e to ga##a radiation is ?

a0 tungsten oxide

b0sodiu# potassiu#

c)"o#iu! io#i#e

d0"opper nitrate

**0whi"h of the fo!!owing is an fa"tor aBe"ting an in"rease in the sub6e"t

"ontrast of a radiograph ?

a0"hanges in te#perature of rinse water

b)variation in 'ocal fl! #i"tance

"0 o(er a"ti(e de(e!oper

d0 under a"ti(e de(e!oper

*10 f the fo!!owing radio isotopes whi"h has the greatest nu#ber of

ga##a energies?a0"o@. Energy high, but on!y two 1G33, 1G1

b0"s13

c)IR,E2 @ ,2no. 8' Ra&"

d0th1@

*.0 $@. has a pub!ished Rh#J"i fa"tor of 1G3 how #any RJhr at 1 #eter

wi!! a 1.."i $@. sour"e produ"e after G3 years ?

a 13 rJhb 1..rJh

c: .5 rh

d: 13GrJh

190A serious of we!! de)ned raptures "aused by high!y !o"a!i>ed stress

whi"h de(e!ops as a "asting ho!es #wou!d be identi)ed as

A)"hrin4a%e

50 "o!d shut

$0segregation

&0hot tears

7/23/2019 RT-2013


1;0 7he i#ages of dis"ontinuities "!ose to the sour"e side of the spe"i#en

be"o#e !ess "!ear!y de)ned as ?

A0 sour"e to ob6e"t distan"e in"reases

B) *he thic4ne"" o' the "+eci!en increa"e"

$0 the si>e of the fo"a! spot de"reases

&0 the thi"/ness of the spe"i#en de"reases

6ue"tion i" not clear

10n a de#onstration or te"hniue shot radiography with both sour"e side

and )!# side penetra#eters when the i#age of penetra#eters of the sa#e

thi"/ness are "o#paired, the i#age of )!# side penetra#eter usua!!y wi!!

be?

A0 Sharper with !ess "ontrast50 u>>ier and #ore "ontrast

C) Shar+er an# !ore contra"t

&0 u>>ier and !ess "ontrast

1@0 <i(en the radiography eui(a!en"e fa"tor of 1G44 in"one! K for -0

"tain le"" stee! what is appro thi"/ness of in"one! to produ"e the sa#e

exposure as a .G in"h thi"/ness of 3.4 stain!ess stee! ?A0.G. in"h

50.G. in"h

$0.G3@ in"h

&0.G1 in"h

.90 what is the approxi 'D for the 2( and #A in serious % ?

A0.G.; in"h50.G1. in"h

$0.G13 in"h

&0.G*. in"h

1 , A "o@. sour"e has a disintegration rate of 11G x1.V1. dps, sour"e

a"ti(ity *G@ $i, years fro# now wi!! be ?

A) ,. ci

50 *G* "i

$0 3 "i

&0 @G "i

7/23/2019 RT-2013


98*$: C3$CK 67$S*I89 R8$R AAI9 5$ARS FR81 98?...

rt-2013

Documents