SOS MECHANIC CERTIFICATE – ELECTRICAL 2025 VERIFIED
QUESTIONS WITH ANSWERS
After installing a new battery how long should you wait to allow for pcm time -
ANSWER-no need to wait
As blower motor speed decreases the voltage drop across the resistance block.... -
ANSWER-increases
What should you do first when replacing junction block or fuse? - ANSWER-Unlock the
battery ground cable
The polarity of the voltage applied to the electromagnetic coils of an actual working DC
motor is.... - ANSWER-a commutator
When performing a volt drop test the volt meter setting should be set to the following.. -
ANSWER-3 volts
The symbol at the RIGHT represents..... - ANSWER-a relay
Which device is used to monitor throttle position on the computer - ANSWER-
potentiometer
A reading of .8 volts on the volt meter #2 would indicate..... - ANSWER-excessive
resistance
In a conventional wiring diagram a dot at the enter section - ANSWER-Splice
After replacement of a defective blower motor the teen found motor spins but no air? -
ANSWER-reversed polarity to the motor
Which piece of test equipment must be connected parallel - ANSWER-Volt meter
A vehicles blower motor only works on high..... - ANSWER-blower resistor
The component D in the following - ANSWER-lamp
Which one of the following component can be damaged by electrical discharge -
ANSWER-all of the above
An am-meter should be connected in which of the following - ANSWER-In series with
the load
Direct transmitter controlled switches of a component - ANSWER-less current, high
frequency
QUESTIONS WITH ANSWERS
After installing a new battery how long should you wait to allow for pcm time -
ANSWER-no need to wait
As blower motor speed decreases the voltage drop across the resistance block.... -
ANSWER-increases
What should you do first when replacing junction block or fuse? - ANSWER-Unlock the
battery ground cable
The polarity of the voltage applied to the electromagnetic coils of an actual working DC
motor is.... - ANSWER-a commutator
When performing a volt drop test the volt meter setting should be set to the following.. -
ANSWER-3 volts
The symbol at the RIGHT represents..... - ANSWER-a relay
Which device is used to monitor throttle position on the computer - ANSWER-
potentiometer
A reading of .8 volts on the volt meter #2 would indicate..... - ANSWER-excessive
resistance
In a conventional wiring diagram a dot at the enter section - ANSWER-Splice
After replacement of a defective blower motor the teen found motor spins but no air? -
ANSWER-reversed polarity to the motor
Which piece of test equipment must be connected parallel - ANSWER-Volt meter
A vehicles blower motor only works on high..... - ANSWER-blower resistor
The component D in the following - ANSWER-lamp
Which one of the following component can be damaged by electrical discharge -
ANSWER-all of the above
An am-meter should be connected in which of the following - ANSWER-In series with
the load
Direct transmitter controlled switches of a component - ANSWER-less current, high
frequency
