ASE A6 Electrical Electronics Practice Test

1. All the lights in a brake light circuit illuminate except one. The MOST likely cause is:

  • A. An open wire.
  • B. An open taillight switch.
  • C. A blown fuse.
  • D. A burned bulb.

1.

Answer A is wrong. It is most likely the individual bulb.

Answer B is wrong. This would have affected all the lights.

Answer C is wrong. This would have affected all the lights.

Answer D is correct. In a parallel circuit one bulb can burn out while the others are unaffected.

2. Technician A says loose mounting can result in an inoperative horn. Technician B says loose mounting can cause an inoperative windshield wiper motor. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

2.

Answer A is wrong. Both technicians are correct.

Answer B is wrong. Both technicians are correct.

Answer C is correct. Electrical components that use the chassis ground will suffer high resistance in the ground circuit if the mounting bolts are loose. Many horns, windshield wiper motors, and aftermarket parts use the chassis/body ground.

Answer D is wrong. Both technicians are correct.

3. If a technician reversed the leads of a digital voltmeter on a 12 volt circuit the readout would show:

  • A. 0.00 volts
  • B. -0.00 volts
  • C. 12.00 volts
  • D. -12.00 volts

3.

Answer A is wrong. Because the leads are crossed the output is -12.00 volts.

Answer B is wrong. The answer is -12.00 volts.

Answer C is wrong. The answer is -12.00 volts.

Answer D is correct. The answer is -12.00 volts. If the leads are reversed using a digital meter, the polarity is changed resulting in a negative voltage reading.

4. The hazard and turn signal lights are inoperative. Technician A says that they share the same circuit. Technician B says the vehicle may have a faulty flasher. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

4.

Answer A is wrong. Both technicians are correct.

Answer B is wrong. Both technicians are correct.

Answer C is correct. Both technicians are correct. This indicates the use of a combination flasher.

Answer D is wrong. Both technicians are correct.

Voltage drop test

5. All of the following are true about the circuit in the diagram above EXCEPT.

  • A. It is a ground switched circuit.
  • B. It contains two relays.
  • C. The solid dots indicate a junction.
  • D. It is a positive pulse relay circuit.

5.

Answer A is wrong. The circuit is ground switched.

Answer B is wrong. There are two relays.

Answer C is wrong. Solid dots indicate connected wires.

Answer D is correct. This is a ground switched or negative controlled "pulsed" relay circuit.