Vertical lines on pressure-enthalpy chart show constant

A. Pressure lines

B. Temperature lines

C. Total heat lines

D. Entropy lines

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  1. In a refrigeration cycle, the flow of refrigerant is controlled by
  2. For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is
  3. The emissivity of a polished silver body is __________ as compared to black body.
  4. The bypass factor (B. P. F.) in case of sensible heating of air is (Where td₁ = Dry bulb temperature…
  5. The higher temperature in vapour compression cycle occurs at
  6. Highest temperature encountered in refrigeration cycle should be
  7. The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.
  8. Which of the following statement is correct?
  9. The conditioned air supplied to the room must have the capacity to take up
  10. Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption…
  11. Moisture should be removed from refrigerants to avoid
  12. The temperature of air recorded by a thermometer, when its bulb is surrounded by a wet cloth exposed…
  13. The human body feels comfortable when the heat stored in the body is
  14. The dry bulb temperature during sensible heating of air
  15. The temperature of ammonia after compression in a vapour compression system is
  16. The bypass factor, in case of sensible cooling of air, is given by (where td₁ = Dry bulb temperature…
  17. The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature…
  18. A thermostatic expansion valve in a refrigeration system
  19. Choose the wrong statement
  20. In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s.…
  21. Oil separator in a refrigeration cycle is installed
  22. When the temperature of the surrounding is higher than the temperature of the body, then the heat loss…
  23. If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the…
  24. When the air is passed through an insulated chamber having sprays of water maintained at a temperature…
  25. Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?
  26. The thermostatic expansion valve is also called
  27. The moisture in a refrigerant is removed by
  28. A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called
  29. The relative coefficient of performance is equal to
  30. The humidification process, on the psychrometric chart is shown by