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

  • A cube at high temperature is immersed in a constant temperature bath. It loses heat from its top, bottom and side surfaces with heat transfer coefficients of h1, h2 and h3 respectively. The average heat transfer coefficient for the cube is


  • Options
  • A. h1 + h2 + h3
  • B. (h1h2h3)1/3
  • C. A cube at high temperature is immersed in a constant temperature bath. It loses heat from its top, b
  • D. none of these

  • Correct Answer
  • none of these 

    • More questions

    • 1. Hot piercing is extensively used for making bolts and nuts.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 2. A Francis turbine is an outward flow reaction turbine.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. The negative acceleration is called retardation.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. When the spring of a watch is wound, it will possess

    • Options
    • A. strain energy
    • B. kinetic energy
    • C. heat energy
    • D. electrical energy
      • Discuss
    • 5. An alloy of copper, tin and zinc is known as

    • Options
    • A. brass
    • B. bronze
    • C. gun metal
    • D. muntz metal
      • Discuss
    • 6. In electro-chemical machining, the gap between the tool and work is kept as

    • Options
    • A. 0.1 mm
    • B. 0.25 mm
    • C. 0.4 mm
    • D. 0.75 mm
      • Discuss
    • 7. The pressure of steam at throat of a steam nozzle is called critical pressure.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 8. Which part of the automobile tyre is subjected to greatest flexing action?

    • Options
    • A. Bead
    • B. Side wall
    • C. Shoulder
    • D. Tread
      • Discuss
    • 9. Tension in the cable supporting a lift is more when the lift is moving __________ with an acceleration.

    • Options
    • A. upwards
    • B. downwards
      • Discuss
    • 10. Parson's reaction turbine is a __________ reaction turbine.

    • Options
    • A. 40 percent
    • B. 50 percent
    • C. 60 percent
    • D. 70 percent
      • Discuss

    Comments

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    Bro
    Answer is wrong in made easy ese previous year. Its a in made easy
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