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# Test: Psychrometric Chart & Its Application to Air-Conditioning - 1

## 10 Questions MCQ Test GATE Mechanical (ME) 2022 Mock Test Series | Test: Psychrometric Chart & Its Application to Air-Conditioning - 1

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

Solution:

QUESTION: 2

### The mixing of two or more streams of moist air in air-conditioning process is

Solution:

Process 1 —> 2, adiabatic mixing

QUESTION: 3

### In most of water coolers, the atmospheric air is made to pass through a wet khas-khas or bamboo mat to render a surface cool in summer. Thermodynamically this process may be called

Solution:
QUESTION: 4

Consider the following statements: In a chemical dehumidification process,
1. DPT decreases
2. WBT decreases
3. DBT decreases

Q. Which of these are correct?

Solution:

1→2 : Chemical dehumidication so, DBT increases

QUESTION: 5

The psychrometric chart in air conditioning determines the

Solution:
QUESTION: 6

On Psychrometric chart, the constant wet bulb temperature lines coincide with

Solution:

On psychrometric chart, constant WBT fines coincide with constant enthalpy lines.

QUESTION: 7

Heating of air without changing its moisture content takes place on Psychrometric chart along

Solution:

Where
td1 = dry bulb temperature of air entering to the coil
td2 = dry bulb temperature of air living the coil
td3 = dry bulb temperature of coil

QUESTION: 8

For cooling and dehumidification of unsaturated moist air, it must be passed over a coil at a temperature

Solution:

Cooling and dehumidification : The dehumidification of air is only possible when the effective surface temperature of the cooling coil is less than the dew point temperature of the air entering the coil.

QUESTION: 9

Pure dehumidification can be achieved by passing air through the spray water maintained at

Solution:

Pure dehumidification is achieved by passing air through the spray water which is maintained at dew point temperature. By doing this, excess moisture condenses and temperature remains constant.

QUESTION: 10

During adiabatic saturation process on unsaturated air, the parameter which remains constant is

Solution:

During the adiabatic saturation process, the partial pressure of vapour increases, although the total pressure of the air-vapour mixture remains constant.
It may be noted that the adiabatic saturation temperature is taken equal to the WBT for practical purposes.