ASVAB Automotive Information Practice Test 457397 Results

Your Results Global Average
Questions 5 5
Correct 0 3.11
Score 0% 62%

Review

1

Which of the following is not a primary function of a vehicle's lubrication system?

62% Answer Correctly

increases fuel economy

clean contaminants

cools engine parts

quiets engine noise


Solution

The lubrication system lubricates engine components by putting an oil film between them to reduce friction and smooth engine operation, cools by absorbing heat from engine parts, seals the pistons and cylinders to contain combustion, cleans contaminants, and quiets engine noise.


2

Which of the following is not part of an engine's cooling system?

74% Answer Correctly

radiator

coolant

thermostat

air conditioner


Solution

The purpose of an automobile engine's cooling system is to circulate coolant around the engine so it can absorb and dissipate heat. The water pump pumps coolant through the various components in the system and the radiator cools down coolant after it has heated up after passing through the engine. The thermostat controls the flow of coolant based on engine temperature while the cooling fan draws air through the radiator when the car isn't moving fast enough for unforced air to cool things down on its own.


3

Which of the following is not a part of the oil pump?

37% Answer Correctly

all of these are part of the oil pump

pressure relief valve

oil filter

oil galleries


Solution

The oil pump is driven by the camshaft and is responsible for pumping oil through the oil galleries (passages) that run throughout the engine. It also contains the oil filter and a pressure relief valve which prevents excessive pressure from building up in the lubrication system.


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 rear suspension

your car has an independent front suspension

your car has an independent rear suspension

your car has a rigid axle 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

What does the timing belt do?

64% Answer Correctly

synchronizes the camshaft and the crankshaft

calibrates the speedometer

synchronizes the cam and the camshaft

synchronizes each piston to the crankshaft


Solution

Maintaining proper synchronization between the rotation of the camshaft and the rotation of the crankshaft is critical to ensure that the engine's valves open and close at the proper times during each cylinder's intake and exhaust strokes.