camber on the rolls
offset on the rolls
hardening of the rolls
antifriction bearings
✅ The correct answer is option A.
Workshop Technology MCQs
12. Projection welding is a
continuous spot welding process
multi-spot welding process
arc welding process
process used for joini
✅ The correct answer is option B.
13. For gas welding, the presure desired at the welding torch for acetylene is
7 to 103 kN/m2
70 to 280 kN/m2
280 to 560 kN/m2
560 to 840 kN/m2
✅ The correct answer is option A.
14. Cold working of metal increases
tensile strength
yield strength
hardness
all of these
✅ The correct answer is option D.
15. The process of increasing the cross-section of a bar at the expense of its length, is called
drawing down
upsetting
spinning
peening
✅ The correct answer is option B.
16. In a cold chamber die casting machine, only non-ferrous alloys with __________ are casted.
low melting temperature
high melting temperature
✅ The correct answer is option B.
17. The temperature produced by oxy-hydrogen flame is about
1800° C
2100° C
2400° C
3200° C
✅ The correct answer is option C.
18. A pouring basin acts as a reservoir for the molten metal.
Agree
Disagree
✅ The correct answer is option A.
19. For gas welding, the pressure desired at the welding torch for oxygen is
7 to 103 kN/m2
70 to 280 kN/m2
280 to 560 kN/m2
560 to 840 kN/m2
✅ The correct answer is option B.
20. Cold working requires much higher pressure that hot working.
Correct
Incorrect
✅ The correct answer is option A.