4th Class Power Engineering Part A
Exam Questions & Answers (Grade
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)
,4th Class Power Engineering Part A
Exam Questions & Answers (Grade
A+)
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 (Nm) -
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
,4th Class Power Engineering Part A
Exam Questions & Answers (Grade
A+)
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
, 4th Class Power Engineering Part A
Exam Questions & Answers (Grade
A+)
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
Exam Questions & Answers (Grade
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)
,4th Class Power Engineering Part A
Exam Questions & Answers (Grade
A+)
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 (Nm) -
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
,4th Class Power Engineering Part A
Exam Questions & Answers (Grade
A+)
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
, 4th Class Power Engineering Part A
Exam Questions & Answers (Grade
A+)
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
