ASVAB Automotive Information Practice Test 155298 Results

Your Results Global Average
Questions 5 5
Correct 0 2.76
Score 0% 55%

Review

1

What's the name of the high-voltage winding in the ignition coil?

51% Answer Correctly

primary coil winding

secondary coil winding

initial coil winding

battery coil winding


Solution

The ignition coil is a high-voltage transformer made up of two coils of wire. The primary coil winding is the low-voltage winding and has relatively few turns of heavy wire. The secondary coil winding is the high-voltage winding that surrounds the primary and is made up of thousands of turns of fine wire. Current flows from the battery through the primary coil winding which creates a changing magnetic field inside the secondary coil. This induces a very high-voltage current in the secondary coil which it feeds to the distributor.


2

The radiator is responsible for tranferring heat from the coolant to:

60% Answer Correctly

engine block

cylinder heads

thermostat

outside air


Solution

The radiator is responsible for tranferring heat from the coolant to the outside air. Radiator hoses transfer coolant to and from the engine to the radiator and a radiator cap maintains pressure in the cooling system to increase the boiling point of the coolant mixture and thus allow it to absorb more heat.


3

Engine oil viscosity is rated using the format XW-XX with the number preceding the W indicating viscosity at __________ ℉ and the XX indicating viscosity at __________ ℃.

65% Answer Correctly

0, 0

100, 0

0, 100

100, 100


Solution

The primary component of the lubrication system is engine oil. Engines require oil blends with different thickness (viscosity) and additives depending on their operating conditions. Viscosity is rated using the format XW-XX with the number preceding the W (winter) rating the oil’s viscosity at 0 ℉ (-17.8 ℃) and the XX indicating viscosity at 100 ℃.


4

Which of the following is not a function of a car battery?

50% Answer Correctly

delivers supplemental current when the alternator can't handle high electrical system loads

acts as an electrical reservoir for excessive current

acts as a supplemental source of energy to moderate engine performance

delivers current to the ignition system to start the engine


Solution

The lead-acid battery is the core of the electrical system, providing current to the ignition system to start the engine as well as delivering supplemental current when the alternator can't handle high electrical system loads and acting as an electrical reservoir for excessive current.


5

Which of the following enables heat transfer from the cylinder heads to the coolant?

49% Answer Correctly

water jacket

water pump

radiator

water sleeve


Solution

A water jacket is a coolant-filled casing that allows heat transfer from the engine block and cylinder heads to the liquid coolant.