AUTO 101 CH 12 TEST

As the air molecules are squeezed together more tightly, the pressure and the temperature (a)   because of friction between the air molecules as they bounce off each other with (b)   force.

• Lower; less

• Lower; greater

• Rise; less

• Rise; greater

Work is equal to (a)   . Select one:

• Distance moved plus force applied

• Distance moved times force applied

• Distance moved divided by force applied

• Distance divided the force applied

Technician A says that spark ignition engines use glow plugs. Technician B says that compression ignition engines don't need spark plugs. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B

As (a)   is a twisting or turning force, (b)   is the rate (in time and distance) at which that force ( (c)   ) is produced.

• Torque; horsepower; torque

• Torque; horsepower; horsepower

• Horsepower; torque; horsepower

• Horsepower; torque; torque

Typically, if well maintained, an automotive engine will last many years and (a)   miles (322,000 kilometers [km]) or more.

• 100,000

• 150,000

• 200,000

In a conventional four-stroke cycle, the ______.

• Compression stroke is longer than the power (expansion) stroke

• Power (expansion) stroke is longer than the compression stroke

• Compression and the power (expansion) strokes are the same length

• None of the above

This color exhaust emitting from a vehicle's engine indicates an excessively rich fuel mixture: Select one:

• Black

• Gray

• White

• Blue

The bore is measured across the cylinder, parallel with the block deck, which is the machined surface of the block farthest from the crankshaft.

• True

• False

The trouble with a gear-to-gear design is that it tends to be a bit noisy compared to a ______ and the camshaft needs to be relatively close to the crankshaft.

• Chain

• Belt

• Both A and B

• Neither A nor B

The cylinder head contains the ______ of the engine.

• a. Valves

• b. Valve train

• c. Valve actuating components

• d. All of the above