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SSC-JE ME || Refrigeration and Air-Conditioning Full Revision Quiz

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Question 1

For leakage detection in a refrigeration system using Freon, which of the following is used:

Question 2

During a psychometric process, the latent heat added is  and the sensible heat added is . Determine the Sensible heat factor:

Question 3

Match the following ⇒ 1 - 2 - 3 - 4 : ________-

List – A

1) R -12

2) Ammonia

3) R-22

4) R-11

List – B

A) Industrial system

B) Air conditioning

C) Centrifugal compressor

D) Food freezer

Question 4

In a vapour absorption refrigeration system, the COP of the system is 0.3. If the heat extracted from the refrigerated space is 15 kW, then heat received by generator, if the efficiency of generator is 80 %.

Question 5

Refrigerant being used in VCRS system, should have _________Joule Thomson coefficient

Question 6

Air at 15°C DBT, 60% of relative humidity is heated to 45°C using an electric heater. The surface temp. of the coil is 55°C. Then what will be contact factor of heating coil.

Question 7

The function of an expansion valve is to ___________.

Question 8

Degree of superheating obtained using a liquid-suction heat exchanger is:

Question 9

Sub-cooling in a vapour compression cycle

Question 10

The COP of an vapor-absorption type refrigerator is given by, wherein
T1 = Temp. At which refrigerant receives heat.
T2 = Temp. of cooling water.
T3 = Evaporator temperature.

Question 11

Which of the following statements are TRUE?

1) During sensible cooling of air, both dry bulb and wet bulb temperatures decrease

2) During sensible cooling of air, dry bulb temperature decreases but wet bulb temperature remains constant

3) During sensible cooling of air, dry and wet bulb temperatures decrease but dew point temperature remains constant

4) During sensible cooling of air, dry bulb, wet bulb and dew point temperatures decrease

Question 12

The temperature to which air must be cooled at constant pressure in order to become saturated is the
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Aug 31AE & JE Exams

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Apoorbo RoyApoorbo RoyMember since Sep 2020
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