ASVAB Automotive Information Practice Test 703811 Results

Your Results Global Average
Questions 5 5
Correct 0 2.98
Score 0% 60%

Review

1

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

63% Answer Correctly

ball joint

universal joint

sprint joint

master cylinder


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.


2

The combustion chamber is enclosed by the:

53% Answer Correctly

piston ring

piston

cylinder head

head gasket


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.


3

The fluid reservoir stores the __________ that the master cylinder uses to maintain hydraulic pressure.

79% Answer Correctly

air

brake fluid

ethylene glycol

brake oil


Solution

The fluid reservoir stores the brake fluid that the master cylinder uses to maintain hydraulic pressure.


4

__________ results from oil buildup in the combustion chamber.

43% Answer Correctly

preignition

engine knock

detonation

combustion


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.


5

Which of the following maintains pressure in the cooling system?

61% Answer Correctly

water jacket

water pump

radiator cap

thermostat


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.