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


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10 Questions MCQ Test Thermodynamics | Test: Psychrometric Chart & Its Application to Air-Conditioning - 1

Test: Psychrometric Chart & Its Application to Air-Conditioning - 1 for Mechanical Engineering 2022 is part of Thermodynamics preparation. The Test: Psychrometric Chart & Its Application to Air-Conditioning - 1 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Psychrometric Chart & Its Application to Air-Conditioning - 1 MCQs are made for Mechanical Engineering 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Psychrometric Chart & Its Application to Air-Conditioning - 1 below.
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Test: Psychrometric Chart & Its Application to Air-Conditioning - 1 - Question 1

With reference to following psychrometric chart, match List-I with List-ll and select the correct choice:

Detailed Solution for Test: Psychrometric Chart & Its Application to Air-Conditioning - 1 - Question 1

Test: Psychrometric Chart & Its Application to Air-Conditioning - 1 - Question 2

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

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Process 1 —> 2, adiabatic mixing

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

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

Detailed Solution for Test: Psychrometric Chart & Its Application to Air-Conditioning - 1 - Question 4


1→2 : Chemical dehumidication so, DBT increases

Test: Psychrometric Chart & Its Application to Air-Conditioning - 1 - Question 5

The psychrometric chart in air conditioning determines the

Test: Psychrometric Chart & Its Application to Air-Conditioning - 1 - Question 6

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

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

Test: Psychrometric Chart & Its Application to Air-Conditioning - 1 - Question 7

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

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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

Test: Psychrometric Chart & Its Application to Air-Conditioning - 1 - Question 8

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

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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.

Test: Psychrometric Chart & Its Application to Air-Conditioning - 1 - Question 9

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

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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.

Test: Psychrometric Chart & Its Application to Air-Conditioning - 1 - Question 10

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

Detailed Solution for Test: Psychrometric Chart & Its Application to Air-Conditioning - 1 - Question 10


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.

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