Condensers, Evaporators And Expansion Devices - 2


10 Questions MCQ Test Mock Test Series - Mechanical Engineering (ME) for GATE 2020 | Condensers, Evaporators And Expansion Devices - 2


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This mock test of Condensers, Evaporators And Expansion Devices - 2 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 - 2 (mcq) to study with solutions a complete question bank. The solved questions answers in this Condensers, Evaporators And Expansion Devices - 2 quiz give you a good mix of easy questions and tough questions. Mechanical Engineering students definitely take this Condensers, Evaporators And Expansion Devices - 2 exercise for a better result in the exam. You can find other Condensers, Evaporators And Expansion Devices - 2 extra questions, long questions & short questions for Mechanical Engineering on EduRev as well by searching above.
QUESTION: 1

The capillary tube used as expansion device in vapour compression system works on the principle of

Solution:
QUESTION: 2

Consider the following advantages of refrigeration system using capiilary tube:
1. The cost of capillary tube is less than ail other forms of expansion devices.
2. No receiver is necessary.
3. Low starting torque motor can be used to drive the compressor.

Which of above is/are valid?

Solution:
QUESTION: 3

Which of the following factor does not affect the condenser capacity?

Solution:
QUESTION: 4

The heat rejection factor (HRF) of a condenser is given by 

Solution:

The load on the condenser per unit of refrigeration capacity is known as HRF. Condenser load, Qc =  Refrigerating capacity 

QUESTION: 5

The domestic refrigerator operating on vapour compression cycle uses the following device for expansion

Solution:

Capillary tube is used as an expansion device in small capacity hermetic sealed refrigeration units such as in domestic refrigerators, water coolers, room air-conditioners and freezers.

QUESTION: 6

In a domestic refrigerator, a capillary tube controls the flow of refrigerant from the

Solution:


Hence capillary tube is placed between condenser and evaporator.

QUESTION: 7

A capillary tube is employed in a refrigeration cycle to

Solution:

Capillary tube control the flow of refrigerant by maintaining their enthalpy same.

QUESTION: 8

Capillary tube is not used in large capacity refrigeration system because

Solution:
QUESTION: 9

Which one of the following is the most important function of thermostatic expansion valve

Solution:

Thermostatic expansion valve maintains constant degree of superheat in the evaporator.

QUESTION: 10

In on-off control refrigeration system, which one of the following expansion devices is used?

Solution:

On-off control is done by thermostat. In the On- off control of the air-handling unit, the fan motor is operated intermittently by the room thermostat the bulb of which is installed in the return air.

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