ASE Electrical Review

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 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 full-fielded 70 amp alternator only produces 45 amps. The MOST likely cause of this is: Worn brush, open regulator, worn commutator, burned diode

The headlights get brighter as a vehicle is accelerated. Technician A says this is caused by a high capacity battery. Technician B says this is caused by high charging system voltage. Who is correct?

A technician replaces a blown fuse in a dome light circuit and the element in the fuse melts immediately. Technician A says if a dome light keeps blowing fuses to check for a short to ground. Technician B says resistance in this circuit has increased current flow. Who is correct?

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

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

A vehicle's battery is being tested for capacity. Technician A says during a battery capacity test the voltage should not drop below 9.6 volts at 70° F. Technician B says a battery's voltage reading should increase as temperature decreases. Who is correct?

What is cold cranking amps?

What is a thermistor?