310T Exam - Electronical and |\ |\ |\ |\ |\
Electrical Systems questions |\ |\ |\
with answers |\
1. When trouble shooting an electrical engine or transmission, what
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
else might be require?
|\ |\ |\
a. Test lamp
|\ |\
b. Break out box
|\ |\ |\
c. Continuity tester
|\ |\
d. Ohm meter - CORRECT ANSWERS ✔✔b. break out box
|\ |\ |\ |\ |\ |\ |\ |\ |\
2. An electronically equipped vehicle over heats, the engine fan will
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
no engage upon engine ECM
|\ |\ |\ |\
request. What is likely the issue?
|\ |\ |\ |\ |\
a. Relay contacts burnt
|\ |\ |\
b. Open in the relay
|\ |\ |\ |\
c. Solenoid open-circuit
|\ |\
d. Solenoid seized - CORRECT ANSWERS ✔✔b. open in the relay
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
3. When performing a test on the stator, there is "zero-ohms"
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
measured between the windings |\ |\ |\
,end and the stator frame. What should be done?
|\ |\ |\ |\ |\ |\ |\ |\
a. Replace the stator
|\ |\ |\
b. Re-solder windings
|\ |\
c. Install new brushes
|\ |\ |\
d. Increase the voltage - CORRECT ANSWERS ✔✔a. Replace the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
stator
4. Alternator rings are pitted but can be repaired, what procedure
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
should be done? |\ |\
a. Polish with a crocus cloth
|\ |\ |\ |\ |\
b. Smooth with fine sandpaper
|\ |\ |\ |\
c. Replace slip rings
|\ |\ |\
d. Install new brushes as-is - CORRECT ANSWERS ✔✔a. polish for
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
a crocus cloth
|\ |\ |\
5. What procedure should be followed when repairing multiple
|\ |\ |\ |\ |\ |\ |\ |\ |\
wires within a short section of a
|\ |\ |\ |\ |\ |\
wiring harness? |\
a. Twist wires together
|\ |\ |\
b. Twist and tape connections
|\ |\ |\ |\
c. Solder wires in parallel
|\ |\ |\ |\
,d. Stagger splices, solder and tape - CORRECT ANSWERS ✔✔d.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
Stagger splices, solder and tape
|\ |\ |\ |\
6. When the brakes are applied, the trailer clearance lights become
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
dim and flicker, what is the
|\ |\ |\ |\ |\
likely cause?
|\
a. Light switch overload
|\ |\ |\
b. High resistance in the tail light assembly
|\ |\ |\ |\ |\ |\ |\
c. Short circuit at the trailer connector
|\ |\ |\ |\ |\ |\
d. Incorrect supply voltage - CORRECT ANSWERS ✔✔c. Short
|\ |\ |\ |\ |\ |\ |\ |\ |\
circuit at the trailer connector
|\ |\ |\ |\
7. Cruise control functions fine during the day time, once the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
running lights are on, cruise control
|\ |\ |\ |\ |\
fails to function. What is the likely cause?
|\ |\ |\ |\ |\ |\ |\
a. Faulty switch
|\ |\
b. High resistance in the trailer plug
|\ |\ |\ |\ |\ |\
c. Short circuit in the brake light circuit
|\ |\ |\ |\ |\ |\ |\
d. open circuit in the brake light circuit - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔c. Short circuit in the brake light circuit
|\ |\ |\ |\ |\ |\ |\
, 8. What is the correct procedure for testing the pickup coil in a SI
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
engine?
a. Voltmeter
|\
b. Test light
|\ |\
c. Oscilloscope
|\
d. Ohmmeter - CORRECT ANSWERS ✔✔d. Ohmmeter
|\ |\ |\ |\ |\ |\
9. In order to properly repair wiring, what is the proper procedure?
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
a. Solder with a resin core, then heat shrink
|\ |\ |\ |\ |\ |\ |\ |\
b. Solder with an acid core, then heat shrink
|\ |\ |\ |\ |\ |\ |\ |\
c. Butt splice
|\ |\
d. Butt connectors - CORRECT ANSWERS ✔✔a. Solder with a resin
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
core, then heat shrink
|\ |\ |\ |\
10. Alternator output is low, what should be checked first?
|\ |\ |\ |\ |\ |\ |\ |\ |\
a. Voltage regulator
|\ |\
b. Diode trio
|\ |\
c. Commutator
|\
d. Slip ring - CORRECT ANSWERS ✔✔a. Voltage regulator
|\ |\ |\ |\ |\ |\ |\ |\
11. What turns the three-phase alternating current into Direct
|\ |\ |\ |\ |\ |\ |\ |\ |\
current in a alternator? |\ |\ |\
Electrical Systems questions |\ |\ |\
with answers |\
1. When trouble shooting an electrical engine or transmission, what
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
else might be require?
|\ |\ |\
a. Test lamp
|\ |\
b. Break out box
|\ |\ |\
c. Continuity tester
|\ |\
d. Ohm meter - CORRECT ANSWERS ✔✔b. break out box
|\ |\ |\ |\ |\ |\ |\ |\ |\
2. An electronically equipped vehicle over heats, the engine fan will
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
no engage upon engine ECM
|\ |\ |\ |\
request. What is likely the issue?
|\ |\ |\ |\ |\
a. Relay contacts burnt
|\ |\ |\
b. Open in the relay
|\ |\ |\ |\
c. Solenoid open-circuit
|\ |\
d. Solenoid seized - CORRECT ANSWERS ✔✔b. open in the relay
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
3. When performing a test on the stator, there is "zero-ohms"
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
measured between the windings |\ |\ |\
,end and the stator frame. What should be done?
|\ |\ |\ |\ |\ |\ |\ |\
a. Replace the stator
|\ |\ |\
b. Re-solder windings
|\ |\
c. Install new brushes
|\ |\ |\
d. Increase the voltage - CORRECT ANSWERS ✔✔a. Replace the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
stator
4. Alternator rings are pitted but can be repaired, what procedure
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
should be done? |\ |\
a. Polish with a crocus cloth
|\ |\ |\ |\ |\
b. Smooth with fine sandpaper
|\ |\ |\ |\
c. Replace slip rings
|\ |\ |\
d. Install new brushes as-is - CORRECT ANSWERS ✔✔a. polish for
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
a crocus cloth
|\ |\ |\
5. What procedure should be followed when repairing multiple
|\ |\ |\ |\ |\ |\ |\ |\ |\
wires within a short section of a
|\ |\ |\ |\ |\ |\
wiring harness? |\
a. Twist wires together
|\ |\ |\
b. Twist and tape connections
|\ |\ |\ |\
c. Solder wires in parallel
|\ |\ |\ |\
,d. Stagger splices, solder and tape - CORRECT ANSWERS ✔✔d.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
Stagger splices, solder and tape
|\ |\ |\ |\
6. When the brakes are applied, the trailer clearance lights become
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
dim and flicker, what is the
|\ |\ |\ |\ |\
likely cause?
|\
a. Light switch overload
|\ |\ |\
b. High resistance in the tail light assembly
|\ |\ |\ |\ |\ |\ |\
c. Short circuit at the trailer connector
|\ |\ |\ |\ |\ |\
d. Incorrect supply voltage - CORRECT ANSWERS ✔✔c. Short
|\ |\ |\ |\ |\ |\ |\ |\ |\
circuit at the trailer connector
|\ |\ |\ |\
7. Cruise control functions fine during the day time, once the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
running lights are on, cruise control
|\ |\ |\ |\ |\
fails to function. What is the likely cause?
|\ |\ |\ |\ |\ |\ |\
a. Faulty switch
|\ |\
b. High resistance in the trailer plug
|\ |\ |\ |\ |\ |\
c. Short circuit in the brake light circuit
|\ |\ |\ |\ |\ |\ |\
d. open circuit in the brake light circuit - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔c. Short circuit in the brake light circuit
|\ |\ |\ |\ |\ |\ |\
, 8. What is the correct procedure for testing the pickup coil in a SI
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
engine?
a. Voltmeter
|\
b. Test light
|\ |\
c. Oscilloscope
|\
d. Ohmmeter - CORRECT ANSWERS ✔✔d. Ohmmeter
|\ |\ |\ |\ |\ |\
9. In order to properly repair wiring, what is the proper procedure?
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
a. Solder with a resin core, then heat shrink
|\ |\ |\ |\ |\ |\ |\ |\
b. Solder with an acid core, then heat shrink
|\ |\ |\ |\ |\ |\ |\ |\
c. Butt splice
|\ |\
d. Butt connectors - CORRECT ANSWERS ✔✔a. Solder with a resin
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
core, then heat shrink
|\ |\ |\ |\
10. Alternator output is low, what should be checked first?
|\ |\ |\ |\ |\ |\ |\ |\ |\
a. Voltage regulator
|\ |\
b. Diode trio
|\ |\
c. Commutator
|\
d. Slip ring - CORRECT ANSWERS ✔✔a. Voltage regulator
|\ |\ |\ |\ |\ |\ |\ |\
11. What turns the three-phase alternating current into Direct
|\ |\ |\ |\ |\ |\ |\ |\ |\
current in a alternator? |\ |\ |\
