AV CN

An engine is a machine for converting energy into motion or ……………… work.

• chemical

• mechanical

• hydraulic

• pneumatic

The two basic types of piston engines are the …………………….

• rotary and reciprocating

• pushrod and reciprocating

• gasoline and spark-ignition

• . spark-ignition and compression-ignition

The differences between the spark-ignition engine and the compression-ignition are: ……………………

• the type of fuel used

• the way the fuel gets into the cylinder

• the way the fuel is ignited

• All of the above

Rudolf Diesel, a German engineer, ……………….. the diesel engine

• did

• make

• invented

• discovered

All the following are true about diesel engines EXCEPT ………………

• no throttle valve

• high compression ratio

• spark plugs make starting easier

• speed and power controlled by quantity of fuel injected

In the diesel or compression-ignition engine, the fuel mixes air …………….. it enters the engine cylinder.

• before

• after

• during

• by

The only …………….. engine now used in automobiles is the Wankel engine

• rotary

• Sterling

• piston

• hybrid

The two fuel systems used with spark-ignition engines are: ………………

• carbureted and diesel

• fuel injection and diesel

• port and throttle body

• fuel injected and carbureted

Unlike steam engines and turbines, internal-combustion engines develop no torque when starting, and therefore provision must be made for turning the ……………. so that the cycle of operation can begin.

• camshaft

• Crankshaft

• driveshaft

• gearshaft

Automobile engines are normally started by means of an electric motor or ………….. that is geared to the crankshaft with a clutch that automatically disengages the motor after the engine has started.

• generator

• starter

• supercharger

• shock absorber