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  • Question

  • Thread rolling is restricted to


  • Options
  • A. ferrous materials
  • B. ductile materials
  • C. hard materials
  • D. none of these

  • Correct Answer
  • ductile materials 

    • More questions

    • 1. The wet bulb temperature at 100% relative humidity is __________ dew point temperature.

    • Options
    • A. same as
    • B. lower than
    • C. higher than
      • Discuss
    • 2. Projection welding is a

    • Options
    • A. continuous spot welding process
    • B. multi-spot welding process
    • C. arc welding process
    • D. process used for joining round bars
      • Discuss
    • 3. The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a rectangular notch is given by

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 4. The torque transmitted by a solid shaft of diameter (D) is (where ? = Maximum allowable shear stress)

    • Options
    • A. x ? x D3
    • B. x ? x D3
    • C. x ? x D3
    • D. x ? x D3
      • Discuss
    • 5. The unit discharge through the turbine is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 6. The loud pulsating noise heard within the cylinder of an internal combustion engine is known as

    • Options
    • A. detonation
    • B. turbulence
    • C. pre-ignition
    • D. supercharging
      • Discuss
    • 7. Duralumin contains

    • Options
    • A. 3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium
    • B. 3.5 to 4.5% copper, 1.2 to 1.7% managanese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium
    • C. 4 to 4.5% magnesium, 3 to 4% copper and rest aluminium
    • D. 5 to 6% tin, 2 to 3% copper and rest aluminium
      • Discuss
    • 8. The working pressure and temperature inside the cylinder of an internal combustion engine is __________ as compared to a steam engine.

    • Options
    • A. low
    • B. very low
    • C. high
    • D. very high
      • Discuss
    • 9. The efficiency of the vane blower is (where W1 = Workdone due to compression, and W2 = Workdone due to back flow)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 10. The ratio of the energy absorbed by the body to the total energy falling on it, is called

    • Options
    • A. absorptive power
    • B. emissive power
    • C. emissivity
    • D. none of these
      • Discuss

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