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Test: Condensers, Evaporators & Expansion Devices - 1 - Mechanical Engineering MCQ


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10 Questions MCQ Test - Test: Condensers, Evaporators & Expansion Devices - 1

Test: Condensers, Evaporators & Expansion Devices - 1 for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Test: Condensers, Evaporators & Expansion Devices - 1 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Condensers, Evaporators & Expansion Devices - 1 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Condensers, Evaporators & Expansion Devices - 1 below.
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Test: Condensers, Evaporators & Expansion Devices - 1 - Question 1

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

Test: Condensers, Evaporators & Expansion Devices - 1 - 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

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Test: Condensers, Evaporators & Expansion Devices - 1 - Question 3

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

Test: Condensers, Evaporators & Expansion Devices - 1 - Question 4

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

Detailed Solution for Test: Condensers, Evaporators & Expansion Devices - 1 - Question 4

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.

Test: Condensers, Evaporators & Expansion Devices - 1 - Question 5

An evaporator is also known as

Detailed Solution for Test: Condensers, Evaporators & Expansion Devices - 1 - Question 5

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.

Test: Condensers, Evaporators & Expansion Devices - 1 - 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?

Test: Condensers, Evaporators & Expansion Devices - 1 - Question 7

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

Detailed Solution for Test: Condensers, Evaporators & Expansion Devices - 1 - Question 7

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. 

Test: Condensers, Evaporators & Expansion Devices - 1 - Question 8

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

Test: Condensers, Evaporators & Expansion Devices - 1 - Question 9

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

Test: Condensers, Evaporators & Expansion Devices - 1 - Question 10

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

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