Refrigeration And Air Conditioning Technology 8th Edition By Tomczyk – Test Bank

1. Three reference points for checking temperature measuring instruments are ____.
a. 0°F, 100°F, 110°F b. -460°F, 0°F, 32°F
c. 32°F, 98.6°F, 212°F d. 32°F, 100°F, 250°F
ANSWER: c
POINTS: 1
REFERENCES: Temperature-Measuring Instruments
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/19/2015 12:56 PM

2. To check the temperature leads of an electronic thermometer for low temperature, they should be stirred in a container of ____.
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 water
ANSWER: c
POINTS: 1
REFERENCES: Temperature-Measuring Instruments
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 3/12/2015 12:21 PM

3. To check the temperature leads of an electronic thermometer for high temperature, they should be ____.
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 level
ANSWER: b
POINTS: 1
REFERENCES: Temperature-Measuring Instruments
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 3/12/2015 12:21 PM

4. If the ammeter is off by more than _____%, it should be sent to the repair shop.
a. 1 b. 2
c. 5 d. 10
ANSWER: d
POINTS: 1
REFERENCES: Electrical Test Instruments
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/19/2015 12:57 PM

5. The ____ is used most frequently for amperage checks.
a. hot-wire ammeter b. integrated ammeter
c. clamp-on ammeter d. alternating ammeter
ANSWER: c
POINTS: 1
REFERENCES: Electrical Test Instruments
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/19/2015 12:57 PM

6. Ohm’s law is represented with the formula: ____.
a. I = R/E b. I = E/R
c. E = R/I d. R = I/E
ANSWER: b
POINTS: 1
REFERENCES: Electrical Test Instruments
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/19/2015 12:57 PM

7. A device commonly used for detecting refrigerant leaks is a(n) ____.
a. compressed air canister b. halide torch
c. water pump d. None of the above.
ANSWER: d
POINTS: 1
REFERENCES: Electronic Refrigerant Leak Detection Devices
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/19/2015 12:58 PM

8. ____ can detect leak rates of about 1/4 oz per year.
a. Halide torches b. Compressed air canisters
c. Electronic leak detectors d. Mechanical leak detectors
ANSWER: c
POINTS: 1
REFERENCES: Electronic Refrigerant Leak Detection Devices
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/19/2015 12:59 PM

9. Flue-gas analysis instruments analyze products of combustion from fossil-fuel–burning equipment, such as oil and gas furnaces and ____.
a. boilers b. CO2 testers
c. cooling towers d. refrigerators
ANSWER: a
POINTS: 1
REFERENCES: Flue-Gas Analysis Instruments
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 12/19/2015 1:00 PM

10. Some instruments cannot be calibrated.
a. True
b. False
ANSWER: True
POINTS: 1
REFERENCES: Calibration
QUESTION TYPE: True / False
HAS VARIABLES: False
DATE CREATED: 3/12/2015 12:21 PM
DATE MODIFIED: 3/12/2015 12:21 PM