ASVAB Automotive Information Practice Test 122009 Results

Your Results Global Average
Questions 5 5
Correct 0 3.20
Score 0% 64%

Review

1

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

63% Answer Correctly

universal joint

master cylinder

sprint joint

ball 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.


2

The __________ splits engine power between the front and rear axles of four-wheel drive vehicles.

61% Answer Correctly

universal joint

transfer case

transmission linkage

master cylinder


Solution

The transfer case splits engine power between the front and rear axles of four-wheel drive vehicles.


3

Too much air results in a __________ air-fuel mixture that burns more slowly and hotter.

56% Answer Correctly

light

heavy

lean

rich


Solution

The stoichiometric ratio defines the proper ratio of air to fuel necessary so that an engine burns all fuel with no excess air. For gasoline fuel, the stoichiometric ratio is about 14.7:1 or for every one gram of fuel, 14.7 grams of air are required. Too much air results in a lean air-fuel mixture that burns more slowly and hotter while too much fuel results in a rich mixture that burns quicker and cooler.


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 an independent front suspension

your car has an independent rear suspension

your car has a rigid axle front suspension

your car has a rigid axle rear 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

synchronizes the cam and the camshaft

synchronizes each piston to the crankshaft

calibrates the speedometer


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.