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Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 - Mechanical Engineering MCQ


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10 Questions MCQ Test Thermodynamics - Test: Psychrometric Chart & Its Application to Air-Conditioning - 2

Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 for Mechanical Engineering 2024 is part of Thermodynamics preparation. The Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 below.
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Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 - Question 1

It is desired to condition the outside air from 70% RH and 45°C dry bulb to 50% RH and 25°C dry bulb room condition. The practical arrangement would be

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

When atmospheric air is heated at constant pressure its
1. Humidity ratio does not change
2. Relative humidity increases
3. Dew point temperature does not change
4. Web bulb temperature increases

Which one of the following is correc

Detailed Solution for Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 - Question 2


Humidity ratio does not change

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Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 - Question 3

The Sensible Heat Factor of a room is given by (SHL = Sensible Heat Load and LHL = Latent Heat Load)

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Sensible Heat Factor

Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 - Question 4

The Latent Heat Factor of a room is given by (SHL = Sensible Heat Load and LHL = Latent Heat Load)

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Latent Heat Factor

Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 - Question 5

The main process which takes place in a desert cooler is

Detailed Solution for Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 - Question 5

In desert dry bulb temperature is very high and relative humidity is very low hence cooling and dehumidification process is used.

Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 - Question 6

If during the sensible cooling B is the by-pass factor, then coil efficiency is given by

Detailed Solution for Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 - Question 6

For coil
η + B = 1; η = 1 - B

Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 - Question 7

The by-pass factor for a cooling coil

Detailed Solution for Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 - Question 7

The bypass factor increases with the increasing velocity of air passing through it. The bypass factor also depends on the placing of the coil.

Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 - Question 8

The heat load from the occupants in air conditioning load calculation is a source of

Detailed Solution for Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 - Question 8

Sensible heat load is due to following:
1. The heat flowing into the building by conduction through exterior walls, floors, ceilings, doors and windows due to temperature difference
2. Heat received by solar radiation through glass of window, ventilations
3. Heat gained by lightnings, machineries, cooking operations, industrial processes etc.
Latent heat load is due to following:
1. Heat gain due to moisture in the outside air entering by infiltration.
2. Heat gain due to condensation of moisture from occupants.
3. Heat gain due to condensation of moisture from any process such as cooking.

Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 - Question 9

For air-conditioning the operation theatre in a hospital the percentage of outside air supplied is 

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In operation theaters no ventilated air is supply while 100% fresh air is supplied due to requirement of sufficient Oxygen.

Test: Psychrometric Chart & Its Application to Air-Conditioning - 2 - Question 10

In an air-conditioning plant the refrigeration load on the coil is 100 TR. The mass and enthalpy of air leaving the coil are 420 kg/minute and 40 kJ/kg respectively. What will be the enthalpy of the air at the inlet to the coil under these conditions,

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