logo

CuriousTab

CuriousTab

Discussion

Home ‣ Mechanical Engineering ‣ Heat Transfer, Refrigeration and Air Conditioning Comments
  • Question

  • The boiling point of ammonia is


  • Options
  • A. -10.5°C
  • B. -30°C
  • C. -33.3°C
  • D. -77.7°C

  • Correct Answer
  • -33.3°C 

    • Heat Transfer, Refrigeration and Air Conditioning problems

    Search Results

    • 1. The product of Reynolds number and Prandtl number is known as

    • Options
    • A. Stanton number
    • B. Biot number
    • C. Peclet number
    • D. Grashoff number
      • Discuss
    • 2. The relative humidity __________ as air gets drier.

    • Options
    • A. increases
    • B. decreases
      • Discuss
    • 3. A device used for transfering heat from one fluid to another is called heat exchanger.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. Most air cooled condensers are designed to operate with a temperature difference of

    • Options
    • A. 5°C
    • B. 8°C
    • C. 14°C
    • D. 22°C
      • Discuss
    • 5. The leakage in a refrigeration system using freon is detected by

    • Options
    • A. halide torch
    • B. sulphur sticks
    • C. soap and water
    • D. all of these
      • Discuss
    • 6. A Bell Coleman refrigerator working on dense air system as compared to open air system, for the same range of temperature, results in higher coefficient of performance.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 7. During humidification process, dry bulb temperature

    • Options
    • A. remains constant
    • B. increases
    • C. decreases
      • Discuss
    • 8. The condition of refrigerant after passing through the condenser in a vapour compression system is

    • Options
    • A. saturated liquid
    • B. wet vapour
    • C. dry saturated vapour
    • D. superheated vapour
      • Discuss
    • 9. Fourier's law of heat conduction gives the heat flow for

    • Options
    • A. irregular surfaces
    • B. non-uniform temperature surfaces
    • C. one dimensional cases only
    • D. two dimensional cases only
      • Discuss
    • 10. In a shell and tube heat exchanger, baffles are provided on the shell side to

    • Options
    • A. improve heat transfer
    • B. provide support for tubes
    • C. prevent stagnation of shell side fluid
    • D. all of these
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.