Mechanical Engineering - Manufacturing Science - Forging

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Question - 1

In a hot working process

  • A grain structure of metal is refined
  • B mechanical properties are improved
  • C hardening is eliminated
  • D All of the above

Question - 2

In a cold working process

  • A ultimate tensile strength and hardness increases
  • B good surface finish is obtained
  • C internal and residual stresses are developed
  • D All of the above

Question - 3

In rolling operations, the roll rotates with a surface velocity

  • A lower than the speed of incoming metal
  • B exceeding the speed of incoming metal
  • C equal to speed of the incoming metal
  • D All of the above

Question - 4

Mass production of gears is done by

  • A hobbing
  • B milling
  • C shaping
  • D forming

Question - 5

Gear finishing operation is

  • A shaping
  • B milling
  • C hobbing
  • D saving or burnishing

Question - 6

Cold or hot rolling does not produce

  • A a T-section
  • B an I-section
  • C a channel section
  • D a hollow circular section

Question - 7

Seamless tube can be produced by

  • A two high rolling mill
  • B upsetting process
  • C piercing
  • D None of these

Question - 8

In blanking operation, clearan.ce is given in

  • A die
  • B punch
  • C Both (a) and (b)
  • D None of these

Question - 9

In piercing operation, clearance is given in

  • A die
  • B punch
  • C Both (a) and (b)
  • D None of these

Question - 10

Blanking and piercing operations can be performed simultaneously in

  • A progressive die
  • B simple die
  • C combination die
  • D compound die