Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

36.
The capillary tube, as an expansion device, is used in
domestic refrigerators
water coolers
room air conditioners
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

37.
In aircraft, air refrigeration Cycle is used because of
low weight per tonne of refrigeration
high heat transfer rate
low temperature at high altitudes
higher coefficient of performance
Answer: Option
Explanation:
No answer description is available. Let's discuss.

38.
The material of pipe lines for a system using freon as a refrigerant should be
brass
copper
steel
aluminium
Answer: Option
Explanation:
No answer description is available. Let's discuss.

39.
The temperature of air recorded by a thermometer, when the moisture present in it begins to condense, is called wet bulb temperature.
Yes
No
Answer: Option
Explanation:
No answer description is available. Let's discuss.

40.
In a pressure enthalpy chart, the space to the left of the saturated liquid line represents
wet vapour region
superheated vapour region
sub-cooled liquid region
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.