NCR Departmental Exam : Workshop Technology, Question Bank With Answer
NCR Departmental Exam : Workshop Technology, Question Bank With Answer
SUB-DISCIPLINE: WORKSHOP TECHNOLOGY
Chapter: Smithing and Forging
01.01. Forging is a plastic deformation process.
a) True b) False
01.02. Low and medium carbon steels are readily forged.
a) True b) False
01.03. High carbon and alloy steels are readily forged.
a) True b) False
01.04. Stainless steels are forged specially for aerospace uses.
a) True b) False
01.05. Forgeability decreases with temperature upto a point at which grain growth becomes excessive.
a) True b) False
01.06. Which of the following is a good forgeable material?
a) Carbon/low alloy steels b) Martensitic stainless steel
c) Iron base super alloys d) None
01.07. Economical, easily controlled and mostly used furnace is ……………
a) Gas, oil b) Electric Resistance c) Induction heating d) None
01.06. Temperature to begin forging for soft low carbon steel is …………..
a) 12500C-13000C b) 800-8500C c) Both d) None
01.09 Brass and Bronze alloys are heated to about……….for forging.
a) 600-9500C b) 3500C-5000C c) Both d) None
01.10. Welding is a typical forging operation ………………..
a) True b) False
01.11. Which of the following is not used in hand forging?
a) Anvil b) Tongs c) Feeler d) Presses
01.12. Large machine part can be forged by hand.
a) True b) False
01.13. Hand forging does not require repeated heating.
a) True b) False
01.14. Anvil block serves as a rigid support in power hammering.
a) True b) False
01.15. Heavy falling part of hammer is called ram.
a) True b) False
01.16. In smith forging the working surfaces of both the upper and lower dies are ….
a) Flat and horizontal b) With closed impression c) Both d) None
01.17. Capacity of a hammer is determined by …………..
a) Weight b) Size c) Shape d) None
01.18. Helve hammers are operated by ……………
a) Eccentric b) Rope c) Chain d) Toggle
01.19. Trip hammers are actuated by ……………….
a) Eccentric b) Rope c) Chain d) Toggle
01.20. Lever spring Hammers are operated by ……………
a) Rocking level b) Toggle c) Chain d) None
01.21. Pneumatic hammers has compressor cylinder and ram cylinders.
a) True b) False
01.22. Steam or air hammers inbuilt compressor.
a) True b) False
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Chapter: Smithing and Forging |
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Question |
Answer |
Question |
Answer |
Question |
Answer |
Question |
Answer |
|
01.01 |
a |
01.07 |
a |
01.13 |
b |
01.19 |
d |
|
01.02 |
a |
01.06 |
a |
01.14 |
a |
01.20 |
a |
|
01.03 |
b |
01.09 |
a |
01.15 |
a |
01.21 |
a |
|
01.04 |
a |
01.10 |
a |
01.16 |
a |
01.22 |
b |
|
01.05 |
b |
01.11 |
c |
01.17 |
a |
|
|
|
01.06 |
a |
01.12 |
b |
01.18 |
a |
|
|
Chapter: Welding and Related Processes
02.01. Application of pressure and filler metal is essential in welding.
a) True b) False
02.02. Plastic welding is also called……………welding.
a) Pressure b) Fusion c) Non-pressure d) None
02.03. Fusion welding is also called………..welding.
a) Pressure b) Fusion c) Non-pressure d) None
02.04. In cold welding………………….is applied.
a) Heat b) Pressure c) Both d) None
02.05. Fusion welding may be ……………….
a) Autogenous b) Non-autogenous c) Both d) None
02.06. If welding temperature is correct it will form …………….
a) Plane of weakness b) Equiaxed grains c) Both d) None
02.07. Considerable degree of grain refinement occurs due to normalizing in……………….welding.
a) Single run b) Multi run c) Both d) None
02.08. Slag and gas inclusions may be higher in………….welding.
a) Single run b) Multi run c) Both d) None
02.09. Nitrogen appearing as needle on certain planes in crystals causes ………..
a) Low impact strength b) High impact strength
c) Both d) None
02.10. Stresses setup in the weld by shrinkage may be relieved by annealing.
a) True b) False
02.11. Oxyacetylene welding is suitable for sheets and plates of thickness 2 to 50mm.
a) True b) False
02.12. Flux is employed during welding of mild steel.
a) True b) False
02.13. The temperature of oxyacetylene flame in its hottest region is about ……..
a) 25000C b) 15390C c) 32000C d) None
02.14. Carburizing flame has excess of …………..
a) Acetylene b) Oxygen c) Air d) None
02.15. Carburizing flame is necessary for welding of brass.
a) True b) False
02.16. High pressure Acetylene cylinders are charged to a pressure of…………
a) 1kg/cm2 b) 2kg/cm2 c) 154kg/cm2 d) None
02.17. Oxygen cylinders are charged at a pressure of about ………….
a) 1kg/cm2 b) 2kg/cm2 c) 154kg/cm2 d) None
02.18. Air acetylene welding process attains higher temperature than other gas processes.
a) True b) False
02.19. Oxy-hydrogen process was used to weld…………melting point metals.
a) Low b) High c) Both d) None
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