Question 1

Appearance is a major drawback with what type of air-conditioning equipment?

Accepted Answer

A)  Ductless split systems. 
B)  Ground level package units. 
C)  Rooftop package units. 
D)  Multi-position package units. 
A)  Ductless split systems. 
B)  Ground level package units. 
C)  Rooftop package units. 
D)  Multi-position package units. A

Question 2

If a residential split air-conditioning system has a compressor equipped with a start capacitor and relay, it is probably using a thermostatic expansion valve as a metering device.

Accepted Answer

A) True 
 B)False  True

Question 3

The package air-conditioning system is ____ than the split system because it is completely factory assembled and charged with refrigerant.

Accepted Answer

A)  less efficient 
B)  slightly less efficient 
C)  slightly more efficient 
D)  more efficient 
A)  less efficient 
B)  slightly less efficient 
C)  slightly more efficient 
D)  more efficient D

Question 4

Slant coils for downflow application are designed with a coil slant of usually ____________________°.

Accepted Answer

The answer of Slant coils for downflow application are designed...

Question 5

Three types of expansion devices are used in residential air conditioning systems. They are TXV, capillary tube, and ____________________.

Accepted Answer

The answer of Three types of expansion devices are used...

Question 6

What is the major disadvantage of a top-air-discharge condenser over a side-air-discharge condenser?

Accepted Answer

Fan and motor are mo

Question 7

In reciprocating compressors used in air conditioning, the motor is mainly cooled by ____.

Accepted Answer

A)  air over the shell of the assembly 
B)  discharge gas from the compressor 
C)  suction gas returning to the compressor 
D)  Both a and c. 
A)  air over the shell of the assembly 
B)  discharge gas from the compressor 
C)  suction gas returning to the compressor 
D)  Both a and c.

Question 8

What is the major advantage a top-air-discharge condensing unit has over a side-air-discharge condensing unit?

Accepted Answer

The hot air and noise are disc

Question 9

A popular material combination used in air-conditioning evaporators and condensers is ____.

Accepted Answer

A)  copper tube-stainless steel fin 
B)  copper tube-copper fin 
C)  copper tube-aluminum fin 
D)  stainless steel tube-aluminum fin 
A)  copper tube-stainless steel fin 
B)  copper tube-copper fin 
C)  copper tube-aluminum fin 
D)  stainless steel tube-aluminum fin

Question 10

In rotary compressors, the motor is cooled by ____.

Accepted Answer

A)  air over the shell of the assembly 
B)  discharge gas from the compressor 
C)  suction gas returning to the compressor 
D)  liquid refrigerant by-passed from the liquid line 
A)  air over the shell of the assembly 
B)  discharge gas from the compressor 
C)  suction gas returning to the compressor 
D)  liquid refrigerant by-passed from the liquid line

Question 11

Explain some of the disadvantages of the side-air-discharge condensing unit.

Accepted Answer

Any noise generated inside the cabinet i

Question 12

The moisture content of the air in different locations of the country must be taken into account when selecting air-conditioning equipment.

Accepted Answer

A) True 
 B)False

Question 13

High-efficiency condensers ____.

Accepted Answer

A)  can withstand higher pressures than standard condensers 
B)  have more surface area than standard condensers 
C)  have stainless steel coils 
D)  are located in separate cabinets 
A)  can withstand higher pressures than standard condensers 
B)  have more surface area than standard condensers 
C)  have stainless steel coils 
D)  are located in separate cabinets

Question 14

The air temperature of the air off an evaporative cooler is ____.

Accepted Answer

A)  warmer than the entering air 
B)  cooler than the entering air 
C)  the same as the entering air 
D)  made up of sensible heat only 
A)  warmer than the entering air 
B)  cooler than the entering air 
C)  the same as the entering air 
D)  made up of sensible heat only

Question 15

The supply duct portion of an air handling system needs to be insulated when run through an unconditioned space.

Accepted Answer

A) True 
 B)False

Question 16

More than one evaporator coil circuit is used when ____.

Accepted Answer

A)  the evaporator is located outside the conditioned area 
B)  there would be excessive refrigerant pressure drop in the coil circuit 
C)  a distributor would not be practical 
D)  a slant coil is at an angle more than 60° 
A)  the evaporator is located outside the conditioned area 
B)  there would be excessive refrigerant pressure drop in the coil circuit 
C)  a distributor would not be practical 
D)  a slant coil is at an angle more than 60°

Question 17

There are three kinds of attic ventilation: power, natural, and ____________________.

Accepted Answer

The answer of There are three kinds of attic ventilation:...

Question 18

When exposed to salt air, ____ should be used for the screws to secure the sheet metal of cabinets of air conditioning equipment.

Accepted Answer

A)  copper 
B)  stainless steel 
C)  iron 
D)  tin 
A)  copper 
B)  stainless steel 
C)  iron 
D)  tin

Question 19

When an "A" coil is used in a horizontal application, the coil is laid on its side and a special ____________________ pan is required.

Accepted Answer

The answer of When an "A" coil is used in...

Question 20

What are the three common evaporator designs used on air conditioning equipment?

Accepted Answer

A-coil, H-

Exam 36: Refrigeration Applied to Air Conditioning

Appearance is a major drawback with what type of air-conditioning equipment?

If a residential split air-conditioning system has a compressor equipped with a start capacitor and relay, it is probably using a thermostatic expansion valve as a metering device.

The package air-conditioning system is ____ than the split system because it is completely factory assembled and charged with refrigerant.

Slant coils for downflow application are designed with a coil slant of usually ____________________°.

Three types of expansion devices are used in residential air conditioning systems. They are TXV, capillary tube, and ____________________.

What is the major disadvantage of a top-air-discharge condenser over a side-air-discharge condenser?

In reciprocating compressors used in air conditioning, the motor is mainly cooled by ____.

What is the major advantage a top-air-discharge condensing unit has over a side-air-discharge condensing unit?

A popular material combination used in air-conditioning evaporators and condensers is ____.

In rotary compressors, the motor is cooled by ____.

Explain some of the disadvantages of the side-air-discharge condensing unit.

The moisture content of the air in different locations of the country must be taken into account when selecting air-conditioning equipment.

High-efficiency condensers ____.

The air temperature of the air off an evaporative cooler is ____.

The supply duct portion of an air handling system needs to be insulated when run through an unconditioned space.

More than one evaporator coil circuit is used when ____.

There are three kinds of attic ventilation: power, natural, and ____________________.

When exposed to salt air, ____ should be used for the screws to secure the sheet metal of cabinets of air conditioning equipment.

When an "A" coil is used in a horizontal application, the coil is laid on its side and a special ____________________ pan is required.

What are the three common evaporator designs used on air conditioning equipment?

Heat and Pressure

Matter and Energy

Refrigeration and Refrigerants

General Safety Practices

Tools and Equipment

Fasteners

Tubing and Piping

Leak Detection, System Evacuation and System Clean-Up

Refrigerant and Oil Chemistry and Managementrecovery, Recycling, Reclaiming, and Retrofitting

System Charging

Calibrating Instruments

Basic Electricity and Magnetism

Introduction to Automatic Controls

Automatic Control Components and Applications

Troubleshooting Basic Controls

Advanced Automatic Controlsdirect Digital Controls Ddc and Pneumatics

Types of Electric Motors

Application of Motors

Motor Controls

Troubleshooting Electric Motors

Evaporators and the Refrigeration System

Condensers

Compressors

Expansion Devices

Special Refrigeration System Components

Application of Refrigeration Systems

Commercial Ice Machines

Special Refrigeration Applications

Troubleshooting and Typical Operating Conditions for Commercial Refrigeration

Electric Heat

Gas Heat

Oil Heat

Hydronic Heat

Indoor Air Quality

Comfort and Psychrometrics

Air Distribution and Balance

Installation

Residential Energy Auditing

Typical Operating Conditions

Troubleshooting

Heat Gain and Heat Loss in Buildings

Air Source Heat Pumps

Geothermal Heat Pumps

Domestic Refrigerators and Freezers

Room Air Conditioners

High-Pressure, Low-Pressure, and Absorption Chilled-Water Systems

Cooling Towers and Pumps

Operation, Maintenance, and Troubleshooting of Chilled-Water Air Conditioning Systems

Commercial Rooftop, Packaged, Variable Refrigerant Flow, and Variable Air Volume Systems

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