6-18.
What is the major cause of washing
machine pump failure?
1.
Clogged hoses leading to and
from the pump
2.
Belt slippage between the
friction wheel of the pump and
the motor
3.
Foreign objects lodged in the
pump
4.
Failure of the solenoid
6-19.
In a washing machine, what
minimum water pressure is needed
to overcome the mixing valve
plunger spring pressure for water to
fill?
1.
10 lb
2.
15 lb
3.
20 lb
4.
25 lb
6-20.
In a washing machine, what is the
end result, if any, of loosening the
water-level switch screw?
1.
It allows the water level to rise
2.
It allows the water level to fall
3.
It sets the water level to normal
4.
None
6-21.
Most washing machines have what
minimum number of safety
switches?
1.
One
1.
On the back wall of the drum
2.
Two
2.
On the side wall of the drum
3.
Five
3.
In the door panel
4.
Four
4.
In the exhaust housing
6-22.
What device de-energizes the
washing machine timer motor
during the filling cycle?
1.
The water level switch contacts
2.
The inlet valve contacts
3.
The water pump
6-23.
What is a good starting point in
troubleshooting a washing machine?
1.
Check the timer
2.
Try starting the machine
3.
Check the water supply
4.
Check the safety switches
6-24.
An electrical clothes dryer is not as
complicated as a washing machine.
1.
True
2.
False
6-25.
In an electric dryer, what
component controls the temperature
of the air that passes through the
clothes?
1.
The high- and low-limit
thermostats
2.
The timer
3.
The safety thermostats
4.
The electric heater
6-26.
Where are the thermostats located
on an electric dryer?
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