8/9/2019 Welding - Test Paper No.1

1/4

Welding related MCQs for Non-Management Technicians

-2014

Test Paper No. 1

1. Why should exact size spanner be used in order to open bolts?a. Oversize spanner will slip c. Both A & Bb. Nut will be rounded at the edges

 i oversize spanner is used d. none!. "he parent #etal is not #elted in $$$$$$$$$$$.

a. %"AW c. olderingb. 'AW d. ()W

*. +n welding, -ux is used to prevent $$$$$$$$$$ ro# entering into the weld pool.a. eliu# c. Oxygenb. Nitrogen d. Both /b0 and /c0

. When a valve allows so#e -ow, but not #axi#u# -ow, it is said to be in

 $$$$$$ position.

a. throttling c. openb. closed d. wide open

2. Which o the ollowing alloying ele#ents is added to steel to increase its

corrosion resistance?a. teel c. 3anadiu#b. 4hro#iu# d. 4opper

5. Which o the ollowing gas can be used as a shielding gas in %"AW?a. A##onia c. 4arbon #onoxideb. Argon d. ydrogen sulphide

6. What is the value o acceleration due to gravity?a. 7.81 t9sec c. 7.81 #9sec

b. 7.81 t9sec! d. 7.81#9sec!

8. A lap :oint is #ade through$$$$$$$$$ weld.a. butt c. ;lletb. -are d. corner

7.

8/9/2019 Welding - Test Paper No.1

2/4

1.+n a ;llet weld, the $$$$$$$$$ is the portion o the weld ro# the toe to the

root.a. eg c. throatb. oot d. nec@

12.Cia#eter o washer is generally ta@en $$$$$$$$$$$$$$$$$$.a. eDual to nut size c. less than nut sizeb. greater than nut size d. any size

15.urace roughness on a drawing is represented by.a. triangles c. rectangleb. sDuare d. sphere

16.$$$$$$$$$$$ is a welding process that uses a nonEconsu#able tungsten

electrode to produce the weld.a. "+% c. 'AWb. '+% d. 4AW

18.Once hardened, the $$$$$$$$$$$$ #ust be chipped away to reveal the ;nished

weld.a. ea# c. lag

b. Bead d. (lectrode17.A cylindrical section having no :oint is @nown as.a. (xtruded c. ea#lessb. Brazed d. Welded

!>.+ two angles o a triangle are 7>> and *>>, then the third angle will be$$$$$$$$$ 

degrees.a. 2 c. 7>b. *> d. 5>

!1.+n electric arc welding, the ter#$$$$$$$$$$ reers to the co#ponent that

conducts the current.a. welding rod c. electrodeb. ;ller wire d. weld #etal

!!.Wor@ piece re#ains stationary during operation in $$$$$$ #achine.a. 'illing c. appingb. athe d. Balancing

!*."he selection o the proper welding currents and voltages depends on all o

the ollowing exceptFa. ize o electrode c. Welding positionb. "hic@ness o plate d. Cirection o travel

!."o start an arc, a welder #ay $$$$$$$$$$$$$$$$$$$$$$$$$$$$$.a. hit the electrode holder to the wor@ piece c. stri@e electrode on #etal li@e

a #atch stic@b. tap the electrode on the wor@ piece d. All except /a0

!2.At high current, $$$$$$$$$$$ spatter is produced.a. (xcessive c. slightb. No d. None

!5.bs is an abbreviation o $$$$$$$$$$$$.a. ounds c. engthb. Gilogra#s d. none o the above

!6.+ron alloyed with carbon #ore than !H is called.a. 'ild steel c. Wrought iron

8/9/2019 Welding - Test Paper No.1

3/4

b. 4ast +ron d. uddle iron!8.When two #e#bers are :oined at right angle to each other, this or#s

a$$$$$$$$$ :oint.a. strong c. cornerb. butt d. wea@

!7. .As the strength o steel goes high, it is $$$$$$$$$ diIcult to weld it.a. #ore c. lessb. not d. None o all

*1.!J is eDual to.a. !2.## c. 5.*2##b. 1>>## d. 2>.8##

*!.%lobules o #etal thrown out during welding are called as $$$$$$$$$$.a. 4hips c. spatterb. Burs d. spar@

**."he ;rst run deposited in the root o the :oint i there is to be #ore than one

run is reerred to as $$$$$$$$$$$$$ run.a. critical c. sealingb. root d. ast

*.$$$$$$$$$$$$$ is a headless bolt, threaded at both ends.a. 4otter c. tudb. Gey d. Allen

*2.Outer dia o pipe is eDual to.a. +C K t c. +C K >.2tb. +C K !t d. +C K t

*5.ize o electrode is designated by the dia#eter o the $$$$$$$$$$$$$$$$$.a. -ux coating c. electrode holder

b. core wire d. parent #etal*6."he eIciency o an electrode is $$$$$$$$$$$$$$$ i the -ux covering beco#es

da#p.a. increased c. opti#u#b. constant d. decreased

*8.4hec@ valve in piping syste# is used or.a. OnEoL service c. -ow regulationb. "o resist the reverse -ow d. stopping -ow

*7.4ircu#erence is calculated byF /Where d M dia#eter & M i M *.10.a. 9 d! c. 9 d

b. !d d. d>.+so#etric drawings are drawn at an angle o?

a. *> c. 18>b. 5> d. 1!>

8/9/2019 Welding - Test Paper No.1

4/4