SOS MECHANIC CERTIFICATION BRAKES
COMPREHENSIVE EXAM SCRIPT 2026 FULL
SOLUTION TESTED QUESTIONS
● 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
COMPREHENSIVE EXAM SCRIPT 2026 FULL
SOLUTION TESTED QUESTIONS
● 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
