ASVAB Automotive Information Practice Test 368425 Results

Your Results Global Average
Questions 5 5
Correct 0 2.78
Score 0% 56%

Review

1

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

49% Answer Correctly

water pump

radiator

water sleeve

water jacket


Solution

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


2

__________ results from oil buildup in the combustion chamber.

43% Answer Correctly

preignition

combustion

detonation

engine knock


Solution

Preignition results from the buildup of fuel deposits and/or oil in the combustion chamber. These deposits increase chamber pressure and reduce heat tranfer to the coolant. The trapped heat then raises the temperature of the air-fuel mix to the point that it combusts before ignition.


3

Piston rings are responsible for which of the following?

50% Answer Correctly

connecting the piston to the camshaft

regulating oil distribution inside the cylinder

connecting the piston to the spark plug

containing combustion


Solution

Cylinders act as a guide for the pistons that translate the heat energy of combustion into the mechanical energy necessary to move a vehicle. Piston rings seal the piston to the cylinder to contain combustion gases and also regulate the oil distribution between the piston and cylinder wall. A cylinder head closes in the top of the cylinder forming the combustion chamber which is sealed by a head gasket (head). The head provides space for air and fuel intake valves, exhaust valves, and mounts for spark plugs and fuel injectors.


4

The right front wheel of your front-wheel drive car drops into a pothole and the left front wheel doesn't lose contact with the road. Which of the following is true?

75% Answer Correctly

your car has a rigid axle front suspension

your car has an independent rear suspension

your car has a rigid axle rear suspension

your car has an independent front suspension


Solution

An independent suspension allows the wheels on either side of an axle to move independently from each other. The fact that the left front wheel didn't move up in response to the right front wheel moving down is evidence of this.


5

A constant velocity (CV) joint is closely related to which of the following?

63% Answer Correctly

universal joint

master cylinder

ball joint

sprint joint


Solution

Like CV joints, universal joints (U-joints) are located at each end of a drive shaft and allow the shaft to operate at a variable angle with the item it is driving. Universal joints perform the same basic function as CV joints but CV joints have a wider range of operation.