POWER ENGINEERING 4TH CLASS EXAM ALL WITH 1000+ QUESTIONS AND CORRECT DETAILED SOLUTIONS JUST RELEASED

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POWER ENGINEERING 4TH CLASS EXAM ALL
WITH 1000+ QUESTIONS AND CORRECT
DETAILED SOLUTIONS JUST RELEASED


QUESTION: A routine inspection of an operating steam engine should start with:
Choose one answer.
a. Lubricators
b. Drive belts
c. Engine speed
d. Steam temperature

e. Steam quality - ANSWER✔✔a


QUESTION: When possible, a wise and simple method of checking the bearings of operating
equipment involves:
Choose one answer.
a. Checking the oil quality leaving each bearing
b. Checking the oil quantity leaving each bearing
c. Getting accustomed to normal operating temperature and vibration by feel
d. Noticing the normal operating scent of each bearing

e. Observing the bearing temperature on a thermometer - ANSWER✔✔c


QUESTION: A steam engine will have the steam supply to the cylinder shut off once the piston
has traveled _____ of its stroke.
Choose one answer.
a. 1/4 to 1/3

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b. 75% to 90%
c. 15% to 20%
d. 55% to 65%

e. 90% to 95% - ANSWER✔✔a


QUESTION: Connecting rods on a steam engine:
Choose one answer.
a. Convert reciprocating motion to rotary motion
b. Are used to move the slide valve
c. Are only needed on vertical engines
d. Are used to connect the piston to the slide valve

e. Connects the inlet valve to the discharge valve - ANSWER✔✔a


QUESTION: Large power production plants tend to be of the thermal type because they can
burn solid fuels and:
Choose one answer.
a. They are the least expensive to build
b. The noise level is much less than internal combustion engines
c. The heat cycle they use is the most efficient
d. Solid fuels are the most plentiful and the cheapest

e. They require the least amount of manpower - ANSWER✔✔c


QUESTION: A steam engine's crosshead:
Choose one answer.
a. Imparts angular motion to the piston rod
b. Converts linear motion of the piston rod into angular motion
c. Imparts linear motion to the connecting rod

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d. Does not require any lubrication

e. Is often called the "gudgeon". - ANSWER✔✔b


QUESTION: Which of the following is a heat engine?
1. Steam turbine
2. Gasoline engine
3. Wind Mill
4. Jet engine
5. Steam power plant
6. Gas turbine
7. 2 stroke engine


a. 1, 3, 5, 7
b. 2, 4, 5, 6, 7
c. 2, 4, 6, 7
d. 1, 2, 4, 5, 6, 7

e. 2, 5, 6, 7 - ANSWER✔✔b


QUESTION: Which of the following is a prime mover?
1. Steam turbine
2. Gasoline engine
3. Wind Mill
4. Jet engine
5. Steam power plant
6. Gas turbine
7. 2 stroke engine

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a. 2, 3, 5, 6
b. 1, 3
c. 1, 2, 3, 4, 6, 7
d. 3, 4, 6, 7

e. 1, 3, 4 - ANSWER✔✔c


QUESTION: Steam engines are still used today for?
a. For fast rotational speed
b. For reversal of rotational direction
c. For driving gas engines

d. For its low cost - ANSWER✔✔b


QUESTION: ___ is used for the removal of any water caused by condensation of steam?
a. Slide valve
b. Flywheel
c. Crosshead

d. Drain cocks - ANSWER✔✔d


QUESTION: __ is used to dampen or even-out changes of speed caused by varying steam
pressure
a. Slide valve
b. Flywheel
c. Crosshead

d. Packing box - ANSWER✔✔b


QUESTION: __ is used to prevent steam from leaking past the piston rod and valve rod.
a. Slide valve