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# Test: Refrigeration Cycles & Systems - 2

## 10 Questions MCQ Test Topicwise Question Bank for Mechanical Engineering | Test: Refrigeration Cycles & Systems - 2

Description
This mock test of Test: Refrigeration Cycles & Systems - 2 for Mechanical Engineering helps you for every Mechanical Engineering entrance exam. This contains 10 Multiple Choice Questions for Mechanical Engineering Test: Refrigeration Cycles & Systems - 2 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Refrigeration Cycles & Systems - 2 quiz give you a good mix of easy questions and tough questions. Mechanical Engineering students definitely take this Test: Refrigeration Cycles & Systems - 2 exercise for a better result in the exam. You can find other Test: Refrigeration Cycles & Systems - 2 extra questions, long questions & short questions for Mechanical Engineering on EduRev as well by searching above.
QUESTION: 1

### The solution circuit in vapour-absorption cycle comprises of

Solution:

In vapour-absorption cycle, the system formed by the generator-valve-absorber-pump may be considered to represent the heat engine part of the cycle. In this part, only the refrigerant- absorbent solution circulates. This part is known as solution circuit.

QUESTION: 2

Solution:
QUESTION: 3

### The vapour compression refrigeration cycle is an inherently irreversible cycle, because

Solution:
QUESTION: 4

In vapour compression refrigeration system, at entrance to which component the working fluid is superheat vapour?

Solution:
QUESTION: 5

Which one of the following expansion processes takes place in a vapour compression cycle?

Solution:
QUESTION: 6

The primary purpose of Boot-strap system is to

Solution:

Boot-strap system: It has two heat exchanges ' instead of one and the expansion turbine drives a compressor rather than a fan. So, it cannot be used for ground cooling. The primary purpose of the Boot-strap system is to provide an additional cooling capacity when the primary source of air does not have a sufficiently high pressure to provide the amount of cooling required. The turbine drives the secondary compressor to raise the pressure of primary air before it enters the turbine.

QUESTION: 7

The air cooling system mostly used in transport type aircrafts is

Solution:
QUESTION: 8

In a boot-strap air evaporative cooling system, the evaporator is provided

Solution:

Boot-strap air evaporative cooling system is similar to boot-strap air cycle system except that the addition of an evaporator between the second heat exchanger and the cooling turbine.

QUESTION: 9

The cooling system used for supersonic aircrafts and rockets is

Solution:

The regenerative air cooling system is a modification of simple air system with the addition of a secondary heat exchanger in which the air from the primary heat exchanger is further cooled with a portion of the refrigerated air bled after expansion in the turbine.

QUESTION: 10

Dry ice is suitable for ____ temperature refrigeration.

Solution:

Dry ice when exposed to atmosphere sublimates by absorbing latent heat of sublimation.