Explore topic-wise MCQs in Thermodynamics.

This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.

1.

The cooling tower uses the phenomenon of evaporative cooling to cool warm water above the dbt of air.

A. true
B. false
Answer» C.
2.

In adiabatic evaporative cooling, heat transfer between chamber and surroundings is ____

A. zero
B. high
C. low
D. none of the mentioned
Answer» B. high
3.

When air passes through silica gel,

A. it absorbs water vapour molecules
B. latent heat of condensation is released
C. dbt of air increases
D. all of the mentioned
Answer» E.
4.

THE_COOLING_TOWER_USES_THE_PHENOMENON_OF_EVAPORATIVE_COOLING_TO_COOL_WARM_WATER_ABOVE_THE_DBT_OF_AIR.?$

A. true
B. false
Answer» C.
5.

IN_ADIABATIC_EVAPORATIVE_COOLING,_HEAT_TRANSFER_BETWEEN_CHAMBER_AND_SURROUNDINGS_IS_____?$

A. zero
B. high
C. low
D. none of the mentioned
Answer» B. high
6.

Cooling towers are rated in terms of$

A. approach
B. range
C. both of the mentioned
D. none of the mentioned
Answer» D. none of the mentioned
7.

When air passes through silica gel?

A. it absorbs water vapour molecules
B. latent heat of condensation is released
C. dbt of air increases
D. all of the mentioned
Answer» E.
8.

Which of the following is an absorbent?

A. silica gel
B. activated alumina
C. both of the mentioned
D. none of the mentioned
Answer» D. none of the mentioned
9.

Heating and humidification is done in

A. summer air conditioning
B. winter air conditioning
C. both of the mentioned
D. none of the mentioned
Answer» C. both of the mentioned
10.

Cooling and dehumidification of air is done in summer air conditioning.

A. true
B. false
Answer» B. false
11.

Air can be cooled and dehumidified by

A. circulating chilled water in tube across air flow
B. placing evaporator coil across air flow
C. spraying chilled water to air
D. all of the mentioned
Answer» E.
12.

When humidity ratio of air ____ air is said to be dehumidified.

A. increases
B. decreases
C. remains constant
D. none of the mentioned
Answer» C. remains constant
13.

In sensible heating or cooling,

A. work done remains constant
B. dry bulb temperature or air remains constant
C. both of the mentioned
D. none of the mentioned
Answer» B. dry bulb temperature or air remains constant