Condensers, Evaporators And Expansion Devices - 1


10 Questions MCQ Test Mock Test Series - Mechanical Engineering (ME) for GATE 2020 | Condensers, Evaporators And Expansion Devices - 1


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

The pressures in the evaporator and condenser coils of a refrigeration system have been noted to be equal. This indicates that

Solution:
QUESTION: 2

Match the List-I with List-Il:
List-1
A. Float valve
B. Automatic expansion valve
C. Internally equalized thermostatic expansion valve
D. Externally equalized thermostatic expansion valve
List-ll
1. Constant degree of superheat at evaporator exit pressure
2. Constant degree of superheat at evaporator
3. Constant level of refrigerant in the evaporator
4. Constant pressure in the evaporator

Solution:
QUESTION: 3

Which of the following aspect is responsible for the operation of a thermostatic expansion valve?

Solution:
QUESTION: 4

Which of the following expansion valve is most suitable for application in air conditioning and refrigerant plants?

Solution:

Thermostatic expansion valve is also known as T-X valve.
Three important featured of this makes it most suitable for application in air conditioning and refrigerant plants and these are:
- capable of meeting varying load condition
- maintains constant degree of superheat
- it keeps evaporator always full of the refrigerant regardless of change in cooling load.

QUESTION: 5

An evaporator is also known as

Solution:

The evaporator is also known as a cooling coil, a chilling or a freezing. The evaporator cools by using the refrigerant’s latent heat of vaporization to absorb heat from the medium being cooled.

QUESTION: 6

The heat transfer capacity of an evaporator depends on the following factors:
1. Material
2. Temperature difference
3. Velocity of refrigerant
4. Thickness of the evaporator coil wall
5. Contact surface area

Q. Which of the above factors are valid?

Solution:
QUESTION: 7

Which of the following evaporators use surge tank as a accumulator?

Solution:

In a flooded evaporator, constant liquid refrigerant level is always maintained. A float control valve is used as an expansion device which maintains constant liquid level in the evaporator. The liquid refrigerant from the receiver passes through a lower side float control valve and asccumulator before entering the evaporator coil. The accumulator is also called surge tank which serves as a storage tank for the liquid refrigerant. It maintains a constant liquid level in the evaporator and helps to seperate the liquid refrigerant from the vapour returning to the compressor. 

QUESTION: 8

The evaporator charges the low pressure liquid refrigerant from the expansion valve into

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QUESTION: 9

The evaporator generally used in home freezers, ice cream cabinets etc. is

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QUESTION: 10

Most of the thermostatic expansion valves are set for a superheat of

Solution:

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