Auto Electrical

When charging a battery

• the battery temperature must not exceed 125 degrees F

• a three minute charge test is sufficient

• a car must be running

• it must be removed from the vehicle

Before testing a charging system, the vehicle must have

• the ignition timing set

• a well-tuned engine

• a fully charged battery

• a low charged battery

A very dim headlight can be caused by

• a bad bulb

• a poor ground connection

• a crack in the lens

• dirt in the headlight

A battery may not accept a 45 amp charge if it is

• fully charged

• cold

• sulfated

• all of the above

Wipers that will not shut off can be caused by

• an open fuse

• a ground armature field winding

• a defective park switch

• the linkage being out of adjustment

The most common wire identification on wiring diagrams is ____________ coding

• number

• symbol

• sequence

• color

If three lamps of 2, 6 and 10 ohms, respectively, are connected in series, their total resistance value in ohms is

• 6

• 9

• 12

• 18

Current is measured in

• amps

• watts

• volts

• ohms

High resistance in the starter circuit

• is caused by corroded connectors

• can be checked with a voltage drop test

• can be caused by worn starter brushes

• all of the above

The automotive alternator diodes are used to convert

• AC to DC

• DC to AC

• AC to DC and DC to AC

• electrical energy to mechanical energy