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The cooling system used for supersonic aircrafts and rockets is

A. Simple air cooling system

B. Bootstrap air cooling system

C. Reduced ambient air cooling system

D. Regenerative air cooling system

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  1. The total pressure exerted by the mixture of air and water vapour is equal to the sum of pressures which…
  2. The vapour compression refrigerator employs the following cycle
  3. The dry bulb temperature during sensible heating of air
  4. Most thermostatic expansion valves are set for a superheat of
  5. The central air conditioning system has ________ overall efficiency as compared to individual systems.
  6. The process of under-cooling is generally brought about by
  7. The formation of frost on cooling coils in a refrigerator
  8. The wet bulb depression is zero when relative humidity is
  9. The capacity of a domestic refrigerator is in the range of
  10. Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since
  11. The domestic refrigerator uses following type of compressor
  12. In a refrigeration system, heat absorbed in comparison to heat rejected is
  13. The human body feels comfortable when the heat stored in the body is
  14. While designing the refrigeration system of an aircraft, the prime consideration is that the
  15. The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is
  16. The refrigerant used in small tonnage commercial machines (hermetically sealed units) is
  17. Air refrigeration operates on
  18. A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes…
  19. In a vapour compression refrigeration system, a throttle valve is used in place of an expander because
  20. The wet bulb temperature at 100% relative humidity is ________ dew point temperature.
  21. The minimum temperature to which water can be cooled in a cooling tower is
  22. The bypass factor for a cooling coil
  23. The pressure at the inlet of a refrigerant compressor is called
  24. Which of the following statement is correct?
  25. In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering…
  26. The horizontal and non-uniformly spaced lines on a psychrometric chart indicates
  27. The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.
  28. The thermal diffusivity for gases is generally __________ those for liquids.
  29. Which of the following cycles uses air as the refrigerant?
  30. In a pressure enthalpy chart, the space to the left of the saturated liquid line represents