Power Engineering 4th Class - Unit A1
Review Exam 2025 Questions and
Answers
(4-011-1.3) A wheel and axle has a mechanical advantage of 10. Calculate the diameter of the axle if
the diameter of the wheel is 30cm.
Select one:
a. 3 cm
b. 3.3 cm
c. 6 cm
d. 15 cm - CORRECT ANSWER✔️✔️-a
(4-014-3.4) A 68.5kg object is at rest at a height of 65m above the earth's surface. What is its kinetic
energy?
Select one:
a. 4.45 kJ
b. 4.37 kJ
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,c. 34.25 kJ
d. 0 kJ - CORRECT ANSWER✔️✔️-d
(4-013-2.1) A car accelerates uniformly from rest to 6.1 m/s in 40 seconds. It continues at this
velocity for an additional 60 seconds. Then it decelerates to a stop in 10 seconds. If the car traveled
in a straight line during this time, determine the final distance from its original position.
Select one:
a. 671 m
b. 9.15 m
c. 518.5 m
d. 122 m - CORRECT ANSWER✔️✔️-c
(4-016-2.4) The ratio between the ultimate strength and the allowable stress is called the:
Select one:
a. Ultimate stress
b. Maximum allowable load
c. Working stress
d. Safety factor - CORRECT ANSWER✔️✔️-d
(4-009-2.9) A uniformly applied force, acting at right angles to a surface, divided by the surface area,
is defined as:
Select one:
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,a. Acceleration
b. Pressure
c. Weight
d. Surface area - CORRECT ANSWER✔️✔️-b
(4-014-1.1) The capacity of a body to do work is defined as:
Select one:
a. Energy
b. Power
c. Pressure
d. Force - CORRECT ANSWER✔️✔️-a
(4-009-2.4) The unit of measure for work in the SI system is:
Select one:
a. Newtons
b. Joules
c. Kilowatts
d. Foot pounds - CORRECT ANSWER✔️✔️-b
(4-010-1.3) Which of the following statements about force is FALSE?
Select one:
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, a. Force is the push exerted on a body.
b. Force may make a body move.
c. Force is the pull exerted on a body.
d. No force is required to stop a body's motion. - CORRECT ANSWER✔️✔️-d
(4-012-1.7) Displacement is:
Select one:
a. A vector quantity
b. A scalar quantity
c. Measured by the actual path the object travels
d. How far an object has moved - CORRECT ANSWER✔️✔️-a
(4-014-1.4) A simple machine is required to raise 1 tonne of stones a vertical distance of 30m. If the
efficiency of the pulley is 100%, how much work must be done on the pulley to raise the stone?
Select one:
a. 294.3 J
b. 30 kJ
c. 35 kJ
d. 294.27 kJ - CORRECT ANSWER✔️✔️-d
(4-010-2.8) A 5m long bar is pivoted on the right end and a force of 10N is applied upwards on the
left end. The moment of force is:
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Review Exam 2025 Questions and
Answers
(4-011-1.3) A wheel and axle has a mechanical advantage of 10. Calculate the diameter of the axle if
the diameter of the wheel is 30cm.
Select one:
a. 3 cm
b. 3.3 cm
c. 6 cm
d. 15 cm - CORRECT ANSWER✔️✔️-a
(4-014-3.4) A 68.5kg object is at rest at a height of 65m above the earth's surface. What is its kinetic
energy?
Select one:
a. 4.45 kJ
b. 4.37 kJ
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
,c. 34.25 kJ
d. 0 kJ - CORRECT ANSWER✔️✔️-d
(4-013-2.1) A car accelerates uniformly from rest to 6.1 m/s in 40 seconds. It continues at this
velocity for an additional 60 seconds. Then it decelerates to a stop in 10 seconds. If the car traveled
in a straight line during this time, determine the final distance from its original position.
Select one:
a. 671 m
b. 9.15 m
c. 518.5 m
d. 122 m - CORRECT ANSWER✔️✔️-c
(4-016-2.4) The ratio between the ultimate strength and the allowable stress is called the:
Select one:
a. Ultimate stress
b. Maximum allowable load
c. Working stress
d. Safety factor - CORRECT ANSWER✔️✔️-d
(4-009-2.9) A uniformly applied force, acting at right angles to a surface, divided by the surface area,
is defined as:
Select one:
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,a. Acceleration
b. Pressure
c. Weight
d. Surface area - CORRECT ANSWER✔️✔️-b
(4-014-1.1) The capacity of a body to do work is defined as:
Select one:
a. Energy
b. Power
c. Pressure
d. Force - CORRECT ANSWER✔️✔️-a
(4-009-2.4) The unit of measure for work in the SI system is:
Select one:
a. Newtons
b. Joules
c. Kilowatts
d. Foot pounds - CORRECT ANSWER✔️✔️-b
(4-010-1.3) Which of the following statements about force is FALSE?
Select one:
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, a. Force is the push exerted on a body.
b. Force may make a body move.
c. Force is the pull exerted on a body.
d. No force is required to stop a body's motion. - CORRECT ANSWER✔️✔️-d
(4-012-1.7) Displacement is:
Select one:
a. A vector quantity
b. A scalar quantity
c. Measured by the actual path the object travels
d. How far an object has moved - CORRECT ANSWER✔️✔️-a
(4-014-1.4) A simple machine is required to raise 1 tonne of stones a vertical distance of 30m. If the
efficiency of the pulley is 100%, how much work must be done on the pulley to raise the stone?
Select one:
a. 294.3 J
b. 30 kJ
c. 35 kJ
d. 294.27 kJ - CORRECT ANSWER✔️✔️-d
(4-010-2.8) A 5m long bar is pivoted on the right end and a force of 10N is applied upwards on the
left end. The moment of force is:
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