Free Test Prep ASVAB Test Exam Braindumps (page: 92)

There are four types of fuel injection used in cars today. They are throttle body injection, multi-port injection, direct injection, and __________.

  1. a manual continuous electronic flow injection
  2. sequential fuel injection
  3. automatic circuitous injection
  4. manual intermittent injection

Answer(s): B

Explanation:

The four types of fuel injection used in cars today are throttle body injection, multi-port injection, direct injection, and sequential fuel injection.



Most automobile engines are __________.

  1. two-stroke cycle engines
  2. three-stroke cycle engines
  3. four-stroke cycle engines
  4. six-stroke cycle engines

Answer(s): C

Explanation:

Lawn mowers and outboard engines are two-cycle. They are used wherever horsepower is needed in a lightweight package. They run very fast in order to produce power. Four-cycle engines are used in automobiles, where various conditions exist and load variations are greater. One exception is the rotary or Wankel engine, which uses a rotary design to convert pressure into rotating motion instead of using reciprocating pistons.



When a spark plug fires, it is part of the __________.

  1. power stroke
  2. exhaust stroke
  3. intake stroke
  4. compression stroke

Answer(s): A

Explanation:

The spark plug fires, driving the piston downward to produce power. The intake stroke allows the fuel and air mixture to enter the cylinder. The compression stroke compresses the air/fuel mixture. The exhaust stroke allows the burnt gases to be removed from the cylinder.



If the universal joints are broken and the car is standing still, the car will __________.

  1. not move when the engine is revved up
  2. increase in speed
  3. work as usual
  4. become impossible to push

Answer(s): A

Explanation:

Universal joints are needed to allow the drive shaft to flex when the car goes over a bump in the road. If the universal joints are broken, the car will be unable to move since the drive shaft will not be connected to the power source.



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