Question 1

Which of the following condenses first?

Accepted Answer

A) ammonia vapour 
B) water vapour 
C) both condense at same temperature 
D) none of the mentioned 
A) ammonia vapour 
B) water vapour 
C) both condense at same temperature 
D) none of the mentioned B

Question 2

The process of extraction of the certain required amount of water from air is known as______________

Accepted Answer

A) heating 
B) cooling 
C) humidification 
D) dehumidification 
A) heating 
B) cooling 
C) humidification 
D) dehumidification D

Question 3

A condenser must and then the compressed refrigerant.

Accepted Answer

A) superheat, evaporate 
B) desuperheat, evaporate 
C) superheat, condense 
D) desuperheat, condense 
A) superheat, evaporate 
B) desuperheat, evaporate 
C) superheat, condense 
D) desuperheat, condense D

Question 4

The vapour going to condenser is in temperature and in ammonia.

Accepted Answer

A) higher, less 
B) higher, richer 
C) lower, less 
D) lower, richer 
A) higher, less 
B) higher, richer 
C) lower, less 
D) lower, richer

Question 5

In which type of cooling system are nozzles arranged on different elevation?

Accepted Answer

A) single deck system 
B) double deck system 
C) natural flow system 
D) direct flow system 
A) single deck system 
B) double deck system 
C) natural flow system 
D) direct flow system

Question 6

In absorption refrigeration cycle, which of the following is used?

Accepted Answer

A) refrigerant 
B) absorbent 
C) both of the mentioned 
D) none of the mentioned 
A) refrigerant 
B) absorbent 
C) both of the mentioned 
D) none of the mentioned

Question 7

In which component of the chilled water system, the return air and the fresh air mixture is filtered?

Accepted Answer

A) fan coil unit 
B) ducting grill 
C) compressor 
D) evaporator 
A) fan coil unit 
B) ducting grill 
C) compressor 
D) evaporator

Question 8

Which of the following is recommended in a refrigeration cycle?

Accepted Answer

A) superheating of vapour 
B) subcooling of liquid 
C) both of the mentioned 
D) none of the mentioned 
A) superheating of vapour 
B) subcooling of liquid 
C) both of the mentioned 
D) none of the mentioned

Question 9

In a chilled water system, the refrigerant is used to cool the air directly while in the direct expansion system, a secondary medium like water is used to cool the air.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following is not a component of packaged air conditioners?

Accepted Answer

A) compressor 
B) condenser 
C) chiller 
D) evaporator 
A) compressor 
B) condenser 
C) chiller 
D) evaporator

Question 11

In the aqua-ammonia absorption system,

Accepted Answer

A) water is the refrigerant and ammonia is the absorbent 
B) ammonia is the refrigerant and water is the absorbent 
C) both ammonia and water can be used as refrigerant or absorbent 
D) none of the mentioned 
A) water is the refrigerant and ammonia is the absorbent 
B) ammonia is the refrigerant and water is the absorbent 
C) both ammonia and water can be used as refrigerant or absorbent 
D) none of the mentioned

Question 12

How many number of spray nozzle does each module on spray pond cooling system contains?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 13

Which of the following statement is true?

Accepted Answer

A) ammonia vapour is absorbed in water 
B) boiling point of ammonia is more than that of water 
C) both of the mentioned 
D) none of the mentioned 
A) ammonia vapour is absorbed in water 
B) boiling point of ammonia is more than that of water 
C) both of the mentioned 
D) none of the mentioned

Question 14

Which of the following statements about electric precipitators is false?

Accepted Answer

A) they are used to remove dust by providing a strong electric field 
B) their initial installation cost is high 
C) their operational cost is low 
D) dust particles get attached to the positive electrode 
A) they are used to remove dust by providing a strong electric field 
B) their initial installation cost is high 
C) their operational cost is low 
D) dust particles get attached to the positive electrode

Question 15

In the expansion process, which of the following remains constant?

Accepted Answer

A) work done 
B) heat supplied 
C) internal energy 
D) enthalpy 
A) work done 
B) heat supplied 
C) internal energy 
D) enthalpy

Question 16

Open cooling system is also called as

Accepted Answer

A) parallel system 
B) once through system 
C) air based system 
D) non-reversible system 
A) parallel system 
B) once through system 
C) air based system 
D) non-reversible system

Question 17

In absorption system, compressor in vapour compression cycle is replaced by absorber- generator assembly.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following qualities is not possessed by the filters in the air conditioning system?

Accepted Answer

A) they should be capable of removing dust particles from the incoming air 
B) they should afford easy cleaning 
C) they should offer low frictional resistance to the airflow 
D) they should offer high frictional resistance to the airflow 
A) they should be capable of removing dust particles from the incoming air 
B) they should afford easy cleaning 
C) they should offer low frictional resistance to the airflow 
D) they should offer high frictional resistance to the airflow

Question 19

Which of the following is capable of absorbing excess moisture from the air?

Accepted Answer

A) silica gel 
B) charcoal 
C) salts of calcium or ammonia 
D) activated alumina 
A) silica gel 
B) charcoal 
C) salts of calcium or ammonia 
D) activated alumina

Question 20

Which of the following is the simplest method of cooling the condenser water?

Accepted Answer

A) spray cooling pond 
B) cooling tower 
C) indirect air cooling 
D) hyperbolic cooling tower 
A) spray cooling pond 
B) cooling tower 
C) indirect air cooling 
D) hyperbolic cooling tower

Which of the following condenses first?

The process of extraction of the certain required amount of water from air is known as______________

A condenser must and then the compressed refrigerant.

The vapour going to condenser is in temperature and in ammonia.

In which type of cooling system are nozzles arranged on different elevation?

In absorption refrigeration cycle, which of the following is used?

In which component of the chilled water system, the return air and the fresh air mixture is filtered?

Which of the following is recommended in a refrigeration cycle?

In a chilled water system, the refrigerant is used to cool the air directly while in the direct expansion system, a secondary medium like water is used to cool the air.

Which of the following is not a component of packaged air conditioners?

In the aqua-ammonia absorption system,

How many number of spray nozzle does each module on spray pond cooling system contains?

Which of the following statement is true?

Which of the following statements about electric precipitators is false?

In the expansion process, which of the following remains constant?

Open cooling system is also called as

In absorption system, compressor in vapour compression cycle is replaced by absorber- generator assembly.

Which of the following qualities is not possessed by the filters in the air conditioning system?

Which of the following is capable of absorbing excess moisture from the air?

Which of the following is the simplest method of cooling the condenser water?

Nozzles, Fountains, and Compressible Flow

Friction, Mach Number, and Boiler Operations

Boiler and Fuel

Turbines, Heat Exchangers, and Refrigeration Cycles

Cooling Systems and Nozzles in Engineering

Understanding Fluid Mechanics and Turbines

Boiler Types and Operations

Boiler Technology and Operation: Salts, Features, Difficulties, and Draught Systems

Steam Boilers and Turbines: Types, Characteristics, and Applications

Understanding Steam Turbines: Ratios, Actions, and Factors

Steam Turbines and Power Cycles

Energy Recovery and Thermodynamics Processes

Condensers and Heat Transfer in Refrigeration and Air Conditioning Systems

Boiler Systems and Fluid Dynamics

Turbines, Cogeneration, Refrigeration, and Air Conditioning Systems

Filters

Exam 5: Refrigeration and Air Conditioning System Components and Processes

Which of the following condenses first?

The process of extraction of the certain required amount of water from air is known as______________

A condenser must and then the compressed refrigerant.

The vapour going to condenser is in temperature and in ammonia.

In which type of cooling system are nozzles arranged on different elevation?

In absorption refrigeration cycle, which of the following is used?

In which component of the chilled water system, the return air and the fresh air mixture is filtered?

Which of the following is recommended in a refrigeration cycle?

In a chilled water system, the refrigerant is used to cool the air directly while in the direct expansion system, a secondary medium like water is used to cool the air.

Which of the following is not a component of packaged air conditioners?

In the aqua-ammonia absorption system,

How many number of spray nozzle does each module on spray pond cooling system contains?

Which of the following statement is true?

Which of the following statements about electric precipitators is false?

In the expansion process, which of the following remains constant?

Open cooling system is also called as

In absorption system, compressor in vapour compression cycle is replaced by absorber- generator assembly.

Which of the following qualities is not possessed by the filters in the air conditioning system?

Which of the following is capable of absorbing excess moisture from the air?

Which of the following is the simplest method of cooling the condenser water?

Nozzles, Fountains, and Compressible Flow

Friction, Mach Number, and Boiler Operations

Boiler and Fuel

Turbines, Heat Exchangers, and Refrigeration Cycles

Cooling Systems and Nozzles in Engineering

Understanding Fluid Mechanics and Turbines

Boiler Types and Operations

Boiler Technology and Operation: Salts, Features, Difficulties, and Draught Systems

Steam Boilers and Turbines: Types, Characteristics, and Applications

Understanding Steam Turbines: Ratios, Actions, and Factors

Steam Turbines and Power Cycles

Energy Recovery and Thermodynamics Processes

Condensers and Heat Transfer in Refrigeration and Air Conditioning Systems

Boiler Systems and Fluid Dynamics

Turbines, Cogeneration, Refrigeration, and Air Conditioning Systems

Filters