If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of – 23°C, then the Carnot COP will be_________________?

Byadmin January 25, 2019August 16, 2021

If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of – 23°C, then the Carnot COP will be_________________?

A. 0.2
B. 1.2
C. 5
D. 6
E. 10

Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering air, then the air is

Question: In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering air, then the air is
[A].

heated and dehumidified
[B].
heated and humidified
[C].
cooled and humidified
[D].
cooled and dehumidified

Answer: Option B

Explanation:

No answer description available for this question.

Read More In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering air, then the air is
Refrigeration and Air Conditioning

A standard ice point temperature corresponds to the temperature of ___________________?

A standard ice point temperature corresponds to the temperature of ___________________?

A. water at 0°C
B. ice at – 4°C
C. solid and dry ice
D. mixture of ice, water and vapour under equilibrium conditions under NTP conditions
E. mixture of ice and water Under equilibrium conditions

Read More A standard ice point temperature corresponds to the temperature of ___________________?
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

During heating and dehumidification process, dry bulb temperature

Question: During heating and dehumidification process, dry bulb temperature
[A].

remains constant
[B].
increases
[C].
decreases

Answer: Option B

Explanation:

No answer description available for this question.

Read More During heating and dehumidification process, dry bulb temperature
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In figure shown, E is a heat engine with efficiency of 0.4 and R is a refrigerator. It is given that Q2 + Q4 = 3Q1. The C.O.P. of the refrigerator is

Question: In figure shown, E is a heat engine with efficiency of 0.4 and R is a refrigerator. It is given that Q2 + Q4 = 3Q1. The C.O.P. of the refrigerator is
[A].

2.5
[B].
3.0
[C].
4.0
[D].
5.0

Answer: Option D

Explanation:

No answer description available for this question.

Read More In figure shown, E is a heat engine with efficiency of 0.4 and R is a refrigerator. It is given that Q2 + Q4 = 3Q1. The C.O.P. of the refrigerator is
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

A perfect black body is one which

Question: A perfect black body is one which
[A].

is black in colour
[B].
absorbs heat radiations of all wave lengths falling on it
[C].
reflects all the heat radiations
[D].
transmits the heat radiations

Answer: Option B

Explanation:

No answer description available for this question.

Read More A perfect black body is one which
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In order to collect liquid refrigerant and to prevent it from going to a __________ , a device known as accumulator is used at the suction of compressor.

Question: In order to collect liquid refrigerant and to prevent it from going to a __________ , a device known as accumulator is used at the suction of compressor.
[A].

compressor
[B].
condenser
[C].
expansion valve
[D].
evaporator

Answer: Option A

Explanation:

No answer description available for this question.

Read More In order to collect liquid refrigerant and to prevent it from going to a __________ , a device known as accumulator is used at the suction of compressor.

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