Question 1

Heating and air-conditioning technicians must measure air temperatures from 40ºF to ____________________ºF.

Accepted Answer

150,one hu...

Question 2

The accuracy of a thermometer is more important when working on high temperature refrigeration (air conditioning) systems.

Accepted Answer

A) True 
 B)False

Question 3

Ohm's law is represented with the formula: ____.

Accepted Answer

A)   I = R/E
B)   I = E/R
C)   E = R/I
D)   R = I/EE) A) and C)
F) B) and D)

Question 4

Special thermometers are used to measure temperatures above ____________________ ºF .

Accepted Answer

The answer of Special thermometers are used to measure temperatures...

Question 5

Some instruments cannot be calibrated.

Accepted Answer

A) True 
 B)False

Question 6

When is it important to purchase a good quality instrument?

Accepted Answer

When electrical testing proced...

Question 7

To check the temperature leads of an electronic thermometer for high temperature, they should be ____.

Accepted Answer

A)   placed on the bottom of a pan of boiling water
B)   suspended in a pan of boiling water
C)   suspended in the vapor above a pan of boiling water
D)   suspended in a pan of boiling water located at least 1,000 ft. above sea levelE) B) and C)
F) A) and D) B

Question 8

You should not spray pure refrigerant into the sensing element of a leak detector.

Accepted Answer

A) True 
 B)False

Question 9

The three easily accessible reference points for ____________________-measuring instruments are ice, body temperature, boiling water.

Accepted Answer

The answer of The three easily accessible reference points for...

Question 10

The ____ is used most frequently for amperage checks.

Accepted Answer

A)   hot-wire ammeter
B)   integrated ammeter
C)   clamp-on ammeter
D)   alternating ammeterE) B) and C)
F) None of the above C

Question 11

What is the easiest way to check the voltage scale of a VOM meter?

Accepted Answer

Compare yo...

Question 12

Stirring the ice and water with the thermometer will increase the accuracy of the thermometer reading.

Accepted Answer

A) True 
 B)False

Question 13

How can you check the clamp-on ammeter?

Accepted Answer

Like the voltmeter, ...

Question 14

____________________ means the changing of the instrument's output or reading to correspond to a standard or correct reading.

Accepted Answer

The answer of ____________________ means the changing of the instrument's...

Question 15

Why is it necessary to check the calibration of a gauge manifold periodically?

Accepted Answer

The technician must be able to rely on the gauge manifold and have some reference points with which to check them periodically. This is particularly important when there is reason to doubt gauge accuracy. The gauge manifold is used frequently and is subject to considerable abuse .

Question 16

____ can detect leak rates of about 1/4 oz per year.

Accepted Answer

A)   Halide torches
B)   Compressed air canisters
C)   Electronic leak detectors
D)   Mechanical leak detectorsE) All of the above
F) C) and D)

Question 17

How is the milliamp scale on a meter checked?

Accepted Answer

The milliamp scale on the mete...

Question 18

Flue-gas analysis instruments analyze products of combustion from fossil-fuel-burning equipment, such as oil and gas furnaces and ____.

Accepted Answer

A)   boilers
B)   CO2 testers
C)   cooling towers
D)   refrigeratorsE) B) and D)
F) C) and D)

Question 19

To check the temperature leads of an electronic thermometer for low temperature, they should be stirred in a container of ____.

Accepted Answer

A)   crushed ice and water with 1/2 teaspoon of salt added
B)   crushed ice and water with 1/2 teaspoon of sugar added
C)   crushed ice and pure water
D)   cube ice and pure waterE) A) and B)
F) C) and D)

Question 20

____________________ instruments measure the temperature of vapors, liquids, and solids.

Accepted Answer

Temperatur...

Exam 11: Calibrating Instruments

Heating and air-conditioning technicians must measure air temperatures from 40ºF to ____________________ºF.

Correct Answer
verified
150,one hu...
View Answer

The accuracy of a thermometer is more important when working on high temperature refrigeration (air conditioning) systems.

Correct Answer
verified

Ohm's law is represented with the formula: ____.

Correct Answer
verified

Special thermometers are used to measure temperatures above ____________________ ºF .

Correct Answer
verified

Some instruments cannot be calibrated.

Correct Answer
verified

When is it important to purchase a good quality instrument?

Correct Answer
verified
When electrical testing proced...
View Answer

To check the temperature leads of an electronic thermometer for high temperature, they should be ____.

Correct Answer
verified
B

You should not spray pure refrigerant into the sensing element of a leak detector.

Correct Answer
verified

The three easily accessible reference points for ____________________-measuring instruments are ice, body temperature, boiling water.

Correct Answer
verified

The ____ is used most frequently for amperage checks.

Correct Answer
verified
C

What is the easiest way to check the voltage scale of a VOM meter?

Correct Answer
verified
Compare yo...
View Answer

Stirring the ice and water with the thermometer will increase the accuracy of the thermometer reading.

Correct Answer
verified

How can you check the clamp-on ammeter?

Correct Answer
verified
Like the voltmeter, ...
View Answer

____________________ means the changing of the instrument's output or reading to correspond to a standard or correct reading.

Correct Answer
verified

Why is it necessary to check the calibration of a gauge manifold periodically?

____ can detect leak rates of about 1/4 oz per year.

Correct Answer
verified

How is the milliamp scale on a meter checked?

Correct Answer
verified
The milliamp scale on the mete...
View Answer

Flue-gas analysis instruments analyze products of combustion from fossil-fuel-burning equipment, such as oil and gas furnaces and ____.

Correct Answer
verified

To check the temperature leads of an electronic thermometer for low temperature, they should be stirred in a container of ____.

Correct Answer
verified

____________________ instruments measure the temperature of vapors, liquids, and solids.

Correct Answer
verified
Temperatur...
View Answer

Exam 11: Calibrating Instruments

Heating and air-conditioning technicians must measure air temperatures from 40ºF to ____________________ºF.

Correct Answerverified150,one hu...View AnswerShow Answer

The accuracy of a thermometer is more important when working on high temperature refrigeration (air conditioning) systems.

Correct AnswerverifiedShow Answer

Ohm's law is represented with the formula: ____.

Correct AnswerverifiedShow Answer

Special thermometers are used to measure temperatures above ____________________ ºF .

Correct AnswerverifiedShow Answer

Some instruments cannot be calibrated.

Correct AnswerverifiedShow Answer

When is it important to purchase a good quality instrument?

Correct AnswerverifiedWhen electrical testing proced...View AnswerShow Answer

To check the temperature leads of an electronic thermometer for high temperature, they should be ____.

Correct AnswerverifiedB

You should not spray pure refrigerant into the sensing element of a leak detector.

Correct AnswerverifiedShow Answer

The three easily accessible reference points for ____________________-measuring instruments are ice, body temperature, boiling water.

Correct AnswerverifiedShow Answer

The ____ is used most frequently for amperage checks.

Correct AnswerverifiedC

What is the easiest way to check the voltage scale of a VOM meter?

Correct AnswerverifiedCompare yo...View AnswerShow Answer

Stirring the ice and water with the thermometer will increase the accuracy of the thermometer reading.

Correct AnswerverifiedShow Answer

How can you check the clamp-on ammeter?

Correct AnswerverifiedLike the voltmeter, ...View AnswerShow Answer

____________________ means the changing of the instrument's output or reading to correspond to a standard or correct reading.

Correct AnswerverifiedShow Answer

Why is it necessary to check the calibration of a gauge manifold periodically?

____ can detect leak rates of about 1/4 oz per year.

Correct AnswerverifiedShow Answer

How is the milliamp scale on a meter checked?

Correct AnswerverifiedThe milliamp scale on the mete...View AnswerShow Answer

Flue-gas analysis instruments analyze products of combustion from fossil-fuel-burning equipment, such as oil and gas furnaces and ____.

Correct AnswerverifiedShow Answer

To check the temperature leads of an electronic thermometer for low temperature, they should be stirred in a container of ____.

Correct AnswerverifiedShow Answer

____________________ instruments measure the temperature of vapors, liquids, and solids.

Correct AnswerverifiedTemperatur...View AnswerShow Answer

Correct Answer
verified
150,one hu...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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When electrical testing proced...
View Answer

Correct Answer
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B

Correct Answer
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Correct Answer
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Correct Answer
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C

Correct Answer
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Compare yo...
View Answer

Correct Answer
verified

Correct Answer
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Like the voltmeter, ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The milliamp scale on the mete...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Temperatur...
View Answer