ASE A6 Electrical Electronics Practice Test
1. A vehicle’s battery continues to discharge overnight. After replacing the battery, a battery drain test is performed. The reading on the multimeter above indicates the parasitic drain. Which of the following is correct?
- A. This is acceptable.
- B. This indicates 35mA of current.
- C. This indicates 35A of current.
- D. Both A and B
Answer A is wrong. As a rule of thumb a parasitic drain up to 50mA is considered acceptable.
Answer B is wrong. This reading indicates 35mA of current.
Answer C is wrong. Amperage is a measurement of current. The measurement indicates 35mA, which is much less current than 35A.
Answer D is correct. Both A and B are correct.
2. A vehicle has a starting problem. Technician A says to use an ammeter to test starter current draw. Technician B says that worn brushes result in high resistance in the starter circuit. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
Answer A is wrong. Both technicians are correct.
Answer B is wrong. Both technicians are correct.
Answer C is correct. Low current draw in a starter circuit is often caused by worn brushes. Worn or faulty bushings cause binding, turning resistance and high current draw. Use an ammeter to check amperage and current draw.
Answer D is wrong. Both technicians are correct.
3. The dome light in a vehicle flickers on and off with the switch in the ON position. The MOST likely cause of this problem is:
- A. A short to ground between the power source and the dome light.
- B. An open in the wire leading from the power source to the dome light.
- C. A loose connection between the power source and the dome light.
- D. A burned dome bulb.
Answer A is wrong. A short to ground will most likely result in a blown fuse and no illumination.
Answer B is wrong. An open in the circuit will result in no illumination of the dome light.
Answer C is correct. Look for loose connections in the dome circuit, possibly the bulbs socket. When there is an intermittent problem, look for a loose wire, plug, or ground connection resulting in this condition.
Answer D is wrong. A burned bulb would result in no illumination.
4. The passenger's window in the illustration above is inoperative. It is stuck in the up position. The driver's side window is good. Which of the following is MOST likely causing this condition?
- A. A faulty relay.
- B. An open circuit breaker.
- C. A faulty motor.
- D. A poor ground.
Answer A is wrong. There are no relays in this circuit.
Answer B is wrong. Many window motors have self-resetting circuit breakers. Circuit breakers protect the window circuit from high current.
Answer C is correct. It most likely has a bad window motor. This is common and the MOST likely cause.
Answer D is wrong. The circuit has a common ground that would affect both windows.
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.