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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

Chapter: Smithing and Forging

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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