Technology Today and Tomorrow ©2004

Chapter 22: Power in Transportation

Power in Transportation

1.
Which prime mover is a motor?
A)burns coal to build steam pressure, which drives a rotor
B)burns gasoline in combustion chambers to drive pistons
C)burns fuel to produce hot escaping gases that shoot a rocket upward
D)draws power from a battery in order to spin a drill bit
2.
In which stroke of a four-stroke engine is the air-fuel mixture drawn into the cylinder?
A)first
B)second
C)third
D)fourth
3.
In a rotary-motion engine, expanding gases push against the
A)flywheel.
B)piston.
C)crankshaft.
D)blades of a turbine.
4.
Which engine system contains the piston, the connecting rod, and the crankshaft?
A)lubrication system
B)mechanical system
C)fuel system
D)cooling system
5.
Which of the following is not true of rotary-motion engines?
A)can use a wide variety of fuels
B)fewer moving parts than reciprocating engines
C)less expensive to make than reciprocating engines
D)work best where the same RPM is maintained for extended periods
6.
Which of the following is not true of diesel engines?
A)do not need spark plugs
B)less fuel-efficient than gasoline engines
C)good for pulling heavy loads
D)can be two-stroke or four-stroke
7.
The science that deals with the interaction of air and moving objects is called
A)hydraulics.
B)aerodynamics.
C)telemetry.
D)mechanics.
8.
Which of the following is not true of linear-motion engines?
A)no moving parts needed to transfer power to vehicle
B)can use only liquid fuel
C)very expensive to manufacture
D)directional change of motion not possible
9.
When gases escaping rearward propel a vehicle forward, this forward force is called
A)lift.
B)expulsion.
C)thrust.
D)RPM.
10.
A maglev train operates on the scientific principle that
A)like poles of a magnet attract.
B)unlike poles of a magnet attract.
C)a magnet can be demagnetized by electricity.
D)like poles of a magnet repel each other.
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