1
4TH CLASS POWER ENGINEERING PART
A EXAM 2026 WITH ANSWERS ALREADY
PASSED.
Velocity (m/s) -
-Correct Answers -Change in position / time
Acceleration (m/s^2) -
-Correct Answers -Change in velocity (m/s) / time (s)
Force (Newton) -
-Correct Answers -mass (kg) x acceleration (m/s^2) ,
any action on a body that tends to change its size, shape,
or its state of rest or motion
Force of Gravity -
-Correct Answers -mass (kg) x 9.81 m/s^2
Pressure (Pa) -
-Correct Answers -Force (N) / area (m^2)
Work (J) -
-Correct Answers -Force (N) x distance (m)
Power -
-Correct Answers -Work done / time , Rate of doing
work
Potential Energy (J) -
-Correct Answers -mass x gravity x height , the ability of
a body to do work due by virtue of its position
,2
Kinetic Energy (J) -
-Correct Answers -1/2 x mass x velocity^2 , The ability
of a body to do work due to its motion
Energy (J) -
-Correct Answers -The capacity of a body to do work
Tonne -
-Correct Answers -1000 kilograms
Moment of Force (Nm) -
-Correct Answers -Force (N) x Distance (m) , A force,
acting on a body at any distance from a point on that
body, will tend to produce rotation around that point
Clockwise Moments -
-Correct Answers -Equal to Counter-clockwise
moments
Upward Forces -
-Correct Answers -Equal to Downward forces
Actual Mechanical Advantage (Ma) -
-Correct Answers -Load (N) / Effort (N)
Velocity Ratio (VR) -
-Correct Answers -Distance moved by Effort / Distance
moved by Load
Efficiency -
,3
-Correct Answers -Output Work / Input Work
Output Work -
-Correct Answers -Load x Distance moved by load
Input Work -
-Correct Answers -Effort x Distance moved by effort ,
Equals Output work + Wasted work
Ideal Mechanical Advantage (MA) -
-Correct Answers -Equal to Velocity Ratio (VR)
Load x r -
-Correct Answers -Equal to Effort x R
VR -
-Correct Answers -Equal to R/r and D/d
Load /Effort -
-Correct Answers -Equal to R/r
Scalar -
-Correct Answers -A physical quantity that has
magnitude but no direction
Vector -
-Correct Answers -A quantity that has magnitude and
direction
Space Diagram -
-Correct Answers -Illustrates a system of vectors
, 4
Co-planar Vectors -
-Correct Answers -Vectors that are all in the same
plane
Concurrent Vectors -
-Correct Answers -Vectors whose lines of action meet
at one point
Resultant -
-Correct Answers -A vector that represents the sum of
two or more vectors
Absolute Pressure -
-Correct Answers -Atmospheric pressure + gauge
pressure
Static Friction -
-Correct Answers -A friction force that acts on objects
that are not moving. Always greater than kinetic friction
Kinetic Friction -
-Correct Answers -Friction that opposes motion once
the motion has already started. Not affected by speed of
body Always greater than rolling friction.
Rolling Friction -
-Correct Answers -The friction force that acts on rolling
objects, Always less than kinetic friction
Fluid Friction -
4TH CLASS POWER ENGINEERING PART
A EXAM 2026 WITH ANSWERS ALREADY
PASSED.
Velocity (m/s) -
-Correct Answers -Change in position / time
Acceleration (m/s^2) -
-Correct Answers -Change in velocity (m/s) / time (s)
Force (Newton) -
-Correct Answers -mass (kg) x acceleration (m/s^2) ,
any action on a body that tends to change its size, shape,
or its state of rest or motion
Force of Gravity -
-Correct Answers -mass (kg) x 9.81 m/s^2
Pressure (Pa) -
-Correct Answers -Force (N) / area (m^2)
Work (J) -
-Correct Answers -Force (N) x distance (m)
Power -
-Correct Answers -Work done / time , Rate of doing
work
Potential Energy (J) -
-Correct Answers -mass x gravity x height , the ability of
a body to do work due by virtue of its position
,2
Kinetic Energy (J) -
-Correct Answers -1/2 x mass x velocity^2 , The ability
of a body to do work due to its motion
Energy (J) -
-Correct Answers -The capacity of a body to do work
Tonne -
-Correct Answers -1000 kilograms
Moment of Force (Nm) -
-Correct Answers -Force (N) x Distance (m) , A force,
acting on a body at any distance from a point on that
body, will tend to produce rotation around that point
Clockwise Moments -
-Correct Answers -Equal to Counter-clockwise
moments
Upward Forces -
-Correct Answers -Equal to Downward forces
Actual Mechanical Advantage (Ma) -
-Correct Answers -Load (N) / Effort (N)
Velocity Ratio (VR) -
-Correct Answers -Distance moved by Effort / Distance
moved by Load
Efficiency -
,3
-Correct Answers -Output Work / Input Work
Output Work -
-Correct Answers -Load x Distance moved by load
Input Work -
-Correct Answers -Effort x Distance moved by effort ,
Equals Output work + Wasted work
Ideal Mechanical Advantage (MA) -
-Correct Answers -Equal to Velocity Ratio (VR)
Load x r -
-Correct Answers -Equal to Effort x R
VR -
-Correct Answers -Equal to R/r and D/d
Load /Effort -
-Correct Answers -Equal to R/r
Scalar -
-Correct Answers -A physical quantity that has
magnitude but no direction
Vector -
-Correct Answers -A quantity that has magnitude and
direction
Space Diagram -
-Correct Answers -Illustrates a system of vectors
, 4
Co-planar Vectors -
-Correct Answers -Vectors that are all in the same
plane
Concurrent Vectors -
-Correct Answers -Vectors whose lines of action meet
at one point
Resultant -
-Correct Answers -A vector that represents the sum of
two or more vectors
Absolute Pressure -
-Correct Answers -Atmospheric pressure + gauge
pressure
Static Friction -
-Correct Answers -A friction force that acts on objects
that are not moving. Always greater than kinetic friction
Kinetic Friction -
-Correct Answers -Friction that opposes motion once
the motion has already started. Not affected by speed of
body Always greater than rolling friction.
Rolling Friction -
-Correct Answers -The friction force that acts on rolling
objects, Always less than kinetic friction
Fluid Friction -
