ASVAB Automotive Information Practice Test 481329 Results

Your Results Global Average
Questions 5 5
Correct 0 3.39
Score 0% 68%

Review

1

Waste gases from combustion are removed from the combustion chamber by the:

86% Answer Correctly

exhaust valve

camshaft

piston

head gasket


Solution

The combustion chamber is located in the cylinder head and contains the combustion of the air-fuel mixture. This mixture is delivered by an intake valve and the waste gases from combustion are removed from the combustion chamber by the exhaust valve.


2

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

57% Answer Correctly

tertiary coil winding

distributor coil winding

primary coil winding

secondary 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.


3

The intake ports on the cylinder heads is fed outside air via the:

66% Answer Correctly

intake air pump

intake manifold

intake control module

intake pressure regulator


Solution

The intake manifold distributes outside air to the intake ports on the cylinder heads. The intake air filter removes any airborne contaminants before the air enters the engine.


4

Which of the following is not an advantage that disc brakes have over drum brakes?

50% Answer Correctly

are more easily cooled

provide a larger contact area

use less brake fluid

provide more braking force


Solution

Brakes utlize friction to slow vehicle tires. Drum brakes employ a cast iron drum that roates with the vehicle axle. When hydraulic pressure is applied to the brake assemblies at the wheels, internal pistons expand and push brake shoes outward into contact with the brake drum slowing the rotation of the axle. More powerful disc brakes operate by pinching a rotating disc betweeen two brake pads and allow for a larger surface area to contact the disc, provide more force, and are more easily cooled.


5

What is the function of the head gasket?

75% Answer Correctly

to connect the transmission to the drive train

to seal the exhaust system from the drive train

to seal the brake assembly from external contaminants

to seal the engine block from the cylinders


Solution

A head gasket is a gasket that sits between the engine block and cylinder heads to seal the cylinders to ensure maximum compression and avoid leakage of coolant or engine oil into the cylinders.