4-47. In a gasoline engine ignition circuit,
what is the primary purpose of the
condenser?
1. To protect the breaker points from
being burned
2. To produce high-voltage current
3. To reduce the moisture content in
the distributor
4. To aid in producing a colder spark
4-48. In electronic ignition systems, what
opens and closes the primary circuit?
1. Breaker points
2. A can
3. A mechanical switch
4. An electronic control unit
4-49. What type of energy is contained in
fuel for operating engines?
1. Kinetic
2. Potential
3. Pneumatic
4. Hydraulic
4-50. In a diesel engine, which of the
following is drawn into the cylinders
on the intake stroke?
1. Fresh air
2. Fuel
3. Both 2 and 3 above
4. Oil
4-51. Which of the following controls the
speed of a diesel or gasoline engine?
1. The ignition timing
2. The carburetor discharge pressure
3. The valve overlap setting
4. The amount of fuel and air mixture
burned in the cylinders
4-52. The push or pressure created in an
engine cylinder to move the piston is
a result of what action?
4-53. As the piston nears the bottom of the
power stroke in a two-stroke diesel
engine, the exhaust valves open and
the piston continues downward to
1. uncover the intake ports
2. cover the intake ports
3. uncover the fuel regulator valve
4. cover the exhaust ports
4-54. In many respects, an ignition coil on
a gasoline engine ignition system is
similar to
1. a battery
2. a condenser
3. an electromagnet
4. a spark plug
4-55. In a gasoline engine ignition system,
what prevents arcing across the
breaker points?
1. A high tension coil
2. A low tension coil
3. An insulated distributor cap
4. A condenser
4-56. On the compression stroke in a diesel
engine, the air is compressed and the
temperature in the cylinder will rise
to what maximum temperature?
1. 1,200°F
2. 1,100°F
3. 1,000°F
4.
700°F
4-57. Each movement of the piston in an
engine from top to bottom or from
bottom to top is known by what term?
1. Event
2. Stroke
3. Cycle
4. Transaction
1. The reciprocating motion of the
connecting rod
2. The rotary motion of the camshaft
3. Burning of a mixture of fuel and
air
4. The governor drive assembly
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