ASE A6 Electrical Electronics Practice Test

Voltage drop test

36. A vehicle's engine is slow cranking. The battery has 12.6V and is in good condition. A voltage drop test is performed to test the starter circuit. Technician A says the test result above indicates there is excessive resistance in this circuit. Technician B says the ignition must be disabled and the starter cranked in order to perform this test. Who is correct?

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

36.

Answer A is wrong. Both technician A and B are correct.

Answer B is wrong. Both technician A and B are correct.

Answer C is correct. Troubleshoot the cables, connections, and the solenoid in the starter circuit using voltage drop testing.

Answer D is wrong. Both technician A and B are correct.

Electrical symbol

37. The electrical symbol above is :

  • A. A resister.
  • B. A capacitor.
  • C. An inductor.
  • D. A diode.

37.

Answer A is wrong. This is the symbol for a diode.

Answer B is wrong. This is the symbol for a diode.

Answer C is wrong. This is the symbol for a diode.

Answer D is correct. Diodes keep current flowing in one direction and can protect a circuit.

38. An alternator suffers from low voltage output. The alternator outputs maximum voltage when full-fielded. Which of the following is MOST likely at fault?

  • A. A burned diode.
  • B. A worn alternator brush.
  • C. A faulty regulator.
  • D. A faulty rectifier bridge.

38.

Answer A is wrong. Use a carbon pile load to keep the voltage under 15 volts.

Answer B is wrong. Answer C is correct.

Answer C is correct. Full-fielding an alternator bypasses the regulator resulting in maximum voltage output. This is a great way to test for a faulty internal regulator.

Answer D is wrong. Answer C is correct.

39. Technician A says a fully charged lead acid automotive battery has a specific gravity of 1.265 at 80° F. Technician B says the battery's specific gravity is affected by temperature. Who is correct?

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

39.

Answer A is wrong. It means that it is 1.265 times heavier than the same or equal volume of water.

Answer B is wrong. For temperature adjustments. get a specific gravity reading and adjust to temperature by adding .004 for every ten degrees above 80° F and subtracting .004 for every10 degrees below 80° F.

Answer C is correct. Both technicians are correct.

Answer D is wrong. Both technicians are correct.

40. A vehicle's air conditioner blower motor will only work if the selector is in the high position. Technician A says to check the blower motor resistor. Technician B says this is most likely a loose ground connection. Who is correct?

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

40.

Answer A is correct. A blower motor resistor uses resistance to control blower motor speeds.

Answer B is wrong. Typically a loose connection causes an intermittent condition.

Answer C is wrong. Technician A is correct.

Answer D is wrong. Technician A is correct.