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Home ‣ Mechanical Engineering ‣ Heat Transfer, Refrigeration and Air Conditioning See What Others Are Saying!
  • Question

  • The C.O.P. of an absorption type refrigerator is given by (where T1 = Temperature at which the working substance receives heat, T2 = Temperature of cooling water, and T3 = Evaporator temperature)


  • Options
  • A. The C.O.P. of an absorption type refrigerator is given by (where T1 = Temperature at which the worki
  • B. The C.O.P. of an absorption type refrigerator is given by (where T1 = Temperature at which the worki
  • C. The C.O.P. of an absorption type refrigerator is given by (where T1 = Temperature at which the worki
  • D. The C.O.P. of an absorption type refrigerator is given by (where T1 = Temperature at which the worki

  • Correct Answer
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    • More questions

    • 1. If a number of forces are acting at a point, their resultant is given by

    • Options
    • A. (?V)2 + (?H)2
    • B.
    • C. (?V)2 +(?H)2 +2(?V)(?H)
    • D.
      • Discuss
    • 2. The wet bulb depression indicates __________ humidity of the air.

    • Options
    • A. absolute
    • B. relative
    • C. specific
      • Discuss
    • 3. The work ratio of simple gas turbine cycle depends upon

    • Options
    • A. maximum cycle temperature
    • B. minimum cycle temperature
    • C. pressure ratio
    • D. all of these
      • Discuss
    • 4. Nimonic contains __________ percentage of nickel as that of Inconel.

    • Options
    • A. same
    • B. less
    • C. more
      • Discuss
    • 5. The discharge through an external mouthpiece is given by (where a = Cross-sectional area of the mouthpiece, and H = Height of liquid above the mouthpiece)

    • Options
    • A. 0.855 a2gH
    • B. 1.855 aH2g
    • C. 1.585 a2gH
    • D. 5.85 aH2g
      • Discuss
    • 6. The factor considered for evaluation of machinability is

    • Options
    • A. cutting forces and power consumption
    • B. tool life
    • C. type of chips and shear angle
    • D. all of these
      • Discuss
    • 7. In an impulse turbine, the jet of water impinges on the bucket with a low velocity and after flowing over the vanes, leaves with a high velocity.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. The starting system includes

    • Options
    • A. a battery, a starter, and an ignition switch
    • B. a battery, a distributor, and an ignition switch
    • C. a battery, a starter, and a distributor
    • D. a distributor, a starter, and an ignition switch
      • Discuss
    • 9. The ratio of shear modulus to the modulus of elasticity for a Poisson's ratio of 0.4 will be

    • Options
    • A. 5/7
    • B. 7/5
    • C. 5/14
    • D. 14/5
      • Discuss
    • 10. Brass is an alloy of

    • Options
    • A. copper and zinc
    • B. copper and tin
    • C. copper, tin and zinc
    • D. none of these
      • Discuss

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