ENGINEERING 4th CLASS POWER
PART (A) EXAM 2024-2025
QUESTIONS AND VERIFIED
CORRECT ANSWERS GRADED
A+++
Velocity (m/s)
- Correct Answer- Change in position / time
Acceleration (m/s^2)
- Correct Answer- Change in velocity (m/s) / time (s)
Force (Newton)
- Correct Answer- 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 Answer- mass (kg) x 9.81 m/s^2
Pressure (Pa)
- Correct Answer- Force (N) / area (m^2)
,Work (J)
- Correct Answer- Force (N) x distance (m)
Power
- Correct Answer- Work done / time , Rate of doing
work
Potential Energy (J)
- Correct Answer- mass x gravity x height , the ability of
a body to do work due by virtue of its position
Kinetic Energy (J)
- Correct Answer- 1/2 x mass x velocity^2 , The ability
of a body to do work due to its motion
Energy (J)
- Correct Answer- The capacity of a body to do work
Tonne
- Correct Answer- 1000 kilograms
Moment of Force (N)
, - Correct Answer- 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 Answer- Equal to Counter-clockwise moments
Upward Forces
- Correct Answer- Equal to Downward forces
Actual Mechanical Advantage (Ma)
- Correct Answer- Load (N) / Effort (N)
Velocity Ratio (VR)
- Correct Answer- Distance moved by Effort / Distance
moved by Load
Efficiency
- Correct Answer- Output Work / Input Work
Output Work
- Correct Answer- Load x Distance moved by load
Input Work
, - Correct Answer- Effort x Distance moved by effort ,
Equals Output work + Wasted work
Ideal Mechanical Advantage (MA)
- Correct Answer- Equal to Velocity Ratio (VR)
Load x r
- Correct Answer- Equal to Effort x R
VR
- Correct Answer- Equal to R/r and D/d
Load /Effort
- Correct Answer- Equal to R/r
Scalar
- Correct Answer- A physical quantity that has
magnitude but no direction
Vector
- Correct Answer- A quantity that has magnitude and
direction
Space Diagram
PART (A) EXAM 2024-2025
QUESTIONS AND VERIFIED
CORRECT ANSWERS GRADED
A+++
Velocity (m/s)
- Correct Answer- Change in position / time
Acceleration (m/s^2)
- Correct Answer- Change in velocity (m/s) / time (s)
Force (Newton)
- Correct Answer- 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 Answer- mass (kg) x 9.81 m/s^2
Pressure (Pa)
- Correct Answer- Force (N) / area (m^2)
,Work (J)
- Correct Answer- Force (N) x distance (m)
Power
- Correct Answer- Work done / time , Rate of doing
work
Potential Energy (J)
- Correct Answer- mass x gravity x height , the ability of
a body to do work due by virtue of its position
Kinetic Energy (J)
- Correct Answer- 1/2 x mass x velocity^2 , The ability
of a body to do work due to its motion
Energy (J)
- Correct Answer- The capacity of a body to do work
Tonne
- Correct Answer- 1000 kilograms
Moment of Force (N)
, - Correct Answer- 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 Answer- Equal to Counter-clockwise moments
Upward Forces
- Correct Answer- Equal to Downward forces
Actual Mechanical Advantage (Ma)
- Correct Answer- Load (N) / Effort (N)
Velocity Ratio (VR)
- Correct Answer- Distance moved by Effort / Distance
moved by Load
Efficiency
- Correct Answer- Output Work / Input Work
Output Work
- Correct Answer- Load x Distance moved by load
Input Work
, - Correct Answer- Effort x Distance moved by effort ,
Equals Output work + Wasted work
Ideal Mechanical Advantage (MA)
- Correct Answer- Equal to Velocity Ratio (VR)
Load x r
- Correct Answer- Equal to Effort x R
VR
- Correct Answer- Equal to R/r and D/d
Load /Effort
- Correct Answer- Equal to R/r
Scalar
- Correct Answer- A physical quantity that has
magnitude but no direction
Vector
- Correct Answer- A quantity that has magnitude and
direction
Space Diagram
