Question 1

AHRI rates condensers with ____°F air passing over them.

Accepted Answer

A)   70
B)   75
C)   85
D)   95E) B) and C)
F) A) and C)

Question 2

Ratings that are not completely accurate are known as ____.

Accepted Answer

A)   load ratings
B)   maximal ratings
C)   nominal ratings
D)   floor ratingsE) B) and C)
F) B) and D)

Question 3

For residential air-conditioning units, ____________________ V single-phase is the typical voltage.

Accepted Answer

230,Two hu...

Question 4

The condenser ____________________ heat.

Accepted Answer

The answer of The condenser ____________________ heat....

Question 5

A normal evaporator superheat at the evaporator outlet in a standard efficiency air-conditioning system operating under design conditions will be ____°F.

Accepted Answer

A)   10
B)   15
C)   20
D)   25E) A) and B)
F) All of the above

Question 6

Since the evaporator absorbs both sensible and latent heat, humidity must be taken into account and considered part of the load on the evaporator.

Accepted Answer

A) True 
 B)False

Question 7

At typical operating conditions, the standard air-conditioning system will operate with an evaporator boiling point of ____°F.

Accepted Answer

A)   40
B)   45
C)   50
D)   55E) All of the above
F) A) and D) A

Question 8

A 4-ton air-conditioning system that requires an input power of 5 kW would have an energy efficiency ratio of ____________________.

Accepted Answer

The answer of A 4-ton air-conditioning system that requires an...

Question 9

The evaporator ____________________ heat.

Accepted Answer

The answer of The evaporator ____________________ heat....

Question 10

A more accurate rating system for air-conditioning equipment that takes into consideration operation during the complete cycle is the ____ standard.

Accepted Answer

A)   ARI
B)   ACCA
C)   SEER
D)   EERE) A) and B)
F) None of the above

Question 11

The larger the EER rating, the less efficient the equipment.

Accepted Answer

A) True 
 B)False

Question 12

Why does high-efficiency air-conditioning equipment use a thermostatic expansion valve?

Accepted Answer

High-efficiency air-conditioni...

Question 13

What are three things that must be considered when the manufacturer publishes typical operating conditions?

Accepted Answer

Three things must be considered when the...

Question 14

A four-pole motor runs at ____________________ rpm.

Accepted Answer

1800,Eight...

Question 15

Typically, the fan will run on high speed when the outdoor temperature is above ____________________°F.

Accepted Answer

The answer of Typically, the fan will run on high...

Question 16

The ____ rating is a steady-state rating and does not account for the time the unit operates before reaching peak efficiency.

Accepted Answer

A)   ARR
B)   SAR
C)   DER
D)   EERE) A) and D)
F) All of the above D

Question 17

Why does the high efficiency system have a higher operating efficiency?

Accepted Answer

It operates at lower...

Question 18

Most occupants will normally operate their system at about ____°F.

Accepted Answer

A)   68
B)   72
C)   75
D)   80E) B) and D)
F) B) and C) C

Question 19

High efficiency condensers can actually be too efficient on cool days.

Accepted Answer

A) True 
 B)False

Question 20

What is starting point for considering electrical operating conditions?

Accepted Answer

The starting point for conside...

Exam 40: Typical Operating Conditions

AHRI rates condensers with ____°F air passing over them.

Correct AnswerverifiedShow Answer

Ratings that are not completely accurate are known as ____.

Correct AnswerverifiedShow Answer

For residential air-conditioning units, ____________________ V single-phase is the typical voltage.

Correct Answerverified230,Two hu...View AnswerShow Answer

The condenser ____________________ heat.

Correct AnswerverifiedShow Answer

A normal evaporator superheat at the evaporator outlet in a standard efficiency air-conditioning system operating under design conditions will be ____°F.

Correct AnswerverifiedShow Answer

Since the evaporator absorbs both sensible and latent heat, humidity must be taken into account and considered part of the load on the evaporator.

Correct AnswerverifiedShow Answer

At typical operating conditions, the standard air-conditioning system will operate with an evaporator boiling point of ____°F.

Correct AnswerverifiedA

A 4-ton air-conditioning system that requires an input power of 5 kW would have an energy efficiency ratio of ____________________.

Correct AnswerverifiedShow Answer

The evaporator ____________________ heat.

Correct AnswerverifiedShow Answer

A more accurate rating system for air-conditioning equipment that takes into consideration operation during the complete cycle is the ____ standard.

Correct AnswerverifiedShow Answer

The larger the EER rating, the less efficient the equipment.

Correct AnswerverifiedShow Answer

Why does high-efficiency air-conditioning equipment use a thermostatic expansion valve?

Correct AnswerverifiedHigh-efficiency air-conditioni...View AnswerShow Answer

What are three things that must be considered when the manufacturer publishes typical operating conditions?

Correct AnswerverifiedThree things must be considered when the...View AnswerShow Answer

A four-pole motor runs at ____________________ rpm.

Correct Answerverified1800,Eight...View AnswerShow Answer

Typically, the fan will run on high speed when the outdoor temperature is above ____________________°F.

Correct AnswerverifiedShow Answer

The ____ rating is a steady-state rating and does not account for the time the unit operates before reaching peak efficiency.

Correct AnswerverifiedD

Why does the high efficiency system have a higher operating efficiency?

Correct AnswerverifiedIt operates at lower...View AnswerShow Answer

Most occupants will normally operate their system at about ____°F.

Correct AnswerverifiedC

High efficiency condensers can actually be too efficient on cool days.

Correct AnswerverifiedShow Answer

What is starting point for considering electrical operating conditions?

Correct AnswerverifiedThe starting point for conside...View AnswerShow Answer

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High-efficiency air-conditioni...
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Three things must be considered when the...
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1800,Eight...
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D

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It operates at lower...
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C

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The starting point for conside...
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