AUT 101 Chapter 12 week 1

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

• Rise; greater

• Lower; greater

• Lower; less

• Rise; less

Work is equal to ________.

• Distance divided the force applied

• Distance moved divided by force applied

• Distance moved times force applied

• Distance moved plus 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 B

• Technician A

• Neither A nor B

• Both A and B

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

• Horsepower; torque; torque

• Horsepower; torque; horsepower

• Torque; horsepower; horsepower

• Torque; horsepower; torque

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

• 100,000

• 250,000

• 200,000

• 150,000

In a conventional four-stroke cycle, the ______.

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

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

• None of the above

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

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

• White

• Black

• Blue

• Gray

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

• False

• True

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.

• Valves

• Valve train

• Valve actuating components

• All of the above