ASVAB Automotive Information Practice Test 813709 Results

Your Results Global Average
Questions 5 5
Correct 0 3.05
Score 0% 61%

Review

1

What is the pimary advantage of using power brakes on a vehicle?

62% Answer Correctly

provides higher hydraulic pressure in the braking system

allows the use of antilock brakes

requires less brake fluid to operate the braking system

utilizes battery power to assist in braking


Solution

Power brakes multiply the force a driver applies to the brake pedal using a vacuum booster connected to the engine intake manifold. This provides for much higher hydraulic pressure in the braking system than could be generated by the driver alone. Antilock brakes (ABS) use speed sensors and adjust the brake pressure at each wheel to prevent skidding and allow the driver more steering control in slippery conditions.


2

Which of the following statements about v-type cyllinder arrangement is false?

65% Answer Correctly

has an odd number of cylinders

has two rows of cylinders

engine is shorter than an inline engine

common in motorcycles, cars, and trucks


Solution

A v-arrangement has two rows of cylinders in a V-shaped block with a crankshaft at the bottom of the V. Any even number of cylinders is possible in this configuration from the V-2 that's commonly used in motorcycles up to V-12 or bigger for large trucks. The V design produces a shorter engine than an in-line cylinder configuration and allows for better air-fuel distribution.


3

The __________ converts pressure on the brake pedal to hydraulic pressure in the brake lines.

60% Answer Correctly

brake linkage

brake knuckle

master cylinder

brake cylinder


Solution

The master (brake) cylinder converts pressure on the brake pedal to hydraulic pressure in the brake lines.


4

What is the primary difference between internal and external combustion engines?

48% Answer Correctly

how the fuel is ignited

the type of fuel used

where the power is developed

the air-fuel mix for optimum combustion


Solution

The primary difference between internal and external combustion engines lies in where the power is developed. In an internal combustion engine fuel is ignited and burned inside the same container where the power is developed while in an external combustion engine the fuel is ignited outside the engine and the resulting power sent to it.


5

The distributor is responsible for:

71% Answer Correctly

timing the spark and distributing it to the correct cylinder

utlizing battery power to start the engine

recharging the battery

distributing power to the correct drive wheels


Solution

The distributor is driven by the engine's camshaft and is responsible for timing the spark and distributing it to the correct cylinder. The distributor cap contains a rotor that connects the ignition coil (and its high voltage) to the proper cylinder at the proper point in the stroke cycle.