The purpose of ________________ an electrical system is to make an entire system safer and provide protection against the fluctuations in power supply.
A
observing
B
opening
C
cutting
D
polishing
E
grounding
Exercise Week 09 (unqualifiable)
Puntaje:
20
Workers at a workplace are at a higher risk when an ungrounded device____________________ excess electricity.
A
filters
B
cuts
C
discharges
D
selects
E
charges
The chance of a fault in an ungrounded system is very _____________.
A
far
B
near
C
high
D
back
E
low
RTG means ___________________________.
A
reopening to ground
B
resolution to ground
C
resetting to ground
D
response to ground
E
resistance to ground
____________ refrigerants don't damage the ozone layer.
A
air
B
natural
C
fuel
D
fire
E
synthetic
The evaporator absorbs the heat by __________________ the refrigerating liquid.
A
closing
B
painting
C
eating
D
cooking
E
evaporating
The main purpose of an electrically operated ______________________ is to automatically control the flow of fluids, liquids or gases.
A
solenoid valve
B
mini valve
C
ball valve
D
thermal expansion valve
E
station valve
Scroll compressors are made by ___________ scrolls in which the refrigerant is compressed.
A
ten
B
two
C
fifteen
D
sixteen
E
five
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