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COMMERCIAL REFRIGERATION. EXAM WITH ALL ANSWERS
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COMMERCIAL REFRIGERATION. EXAM WITH ALL ANSWERS
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Practice Light Commercial ( d ) ( nate certification )Study online at https://quizlet.com/_brshl9
1. After an air conditioning system has been installed
The correct
and a leak check performed, the system should be
answer is: 500
evacuated to:
microns or
2. The safest way to locate a natural or LP gas leak is below.
to use:
The correct
3. For a compressor motor rated for 208/230 volts answer is: soap
sin- gle-phase, the minimum and maximum bubbles.
operating voltages, respectively, are:
The correct
4. During the heating season, increased air velocity answer is: 187
at the supply register mat cause an individual to and 253.
feel:
5. How many amps will a 10-kW electric heater pull The correct
at 240- V? answer is: cool.
6. On rectangular sheet metal ductwork, the The correct
preferred position of the drive cleat is: answer is: 42.
The correct
answer is: on
the short sides.
7. In a 12"X 24" duct the air velocity is measured at 700 The correct
answer
fpm, what is the airflow quantity? economizer
package
8. To reach the roof of the 20 ft. high building, how far applied to a
from the base of the wall should the foot of the rooftop air
ladder be placed? conditioner is
to:
9. Before installing gauges on an operating compres-
sor having stem-type service valves, the technician
should check to be sure the valve is in which of the
following positions before removing the service
port cap?
10.The primary benefit to be derived from an
1/4
, Practice Light Commercial ( d ) ( nate certification )
Study online at https://quizlet.com/_brshl9
is: 1400 CFM.
The correct answer is: 5ft.
The correct
answer is:
The correct answer is: back-seated. reduce cooling
costs.
11. The correct
answer
is: Restriction in
2/4
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