Practice Work, Power and Energy RRB PYQ questions from Railway examinations, including RRB NTPC PYQ, RRB Group D PYQ, RRB JE PYQ, RRB ALP PYQ and RRB Technician PYQ. This topic-wise Physics question set covers important concepts related to work, power, energy, kinetic energy, potential energy, mechanical energy and the conservation of energy.
The Work, Power and Energy RRB PYQ collection is useful for candidates preparing for Railway examinations and revising important Physics concepts through previous year questions. Questions from this topic can include both conceptual and numerical problems, making regular practice important for improving calculation accuracy and understanding the application of Physics formulas.
Whether you are preparing for RRB NTPC Work, Power and Energy PYQ, RRB Group D Work, Power and Energy PYQ, RRB JE Work, Power and Energy PYQ, RRB ALP Work, Power and Energy PYQ, or RRB Technician Work, Power and Energy PYQ, practice these previous year questions regularly as part of your Railway Physics preparation.
Start practicing Work, Power and Energy RRB PYQs with answers and explanations and strengthen your Railway Physics preparation.
101
A 40 kg girl climbs stairs through a height of 5 m in 4 seconds. Find her power.
RRB Group D
18/09/2018 / Shift-I
2018
✓ Answer:A500 W
Using g = 10 m/s², P = mgh/t = 40 × 10 × 5/4 = 500 W.
102
A person pulls a trolley 10 m with a force of 50 N. Find the work done.
RRB Group D
27/09/2018 / Shift-I
2018
✓ Answer:B500 J
W = Fs = 50 × 10 = 500 J.
103
A machine does 3000 J of work in 15 seconds. Find its power output.
P = W/t = 3000/15 = 200 W. Repeated 5 W options are retained from the PDF.
104
A 50 kg boy climbs 45 stairs in 10 seconds. Each stair is 16 cm high. Find his power.
RRB Group D
23/10/2018 / Shift-II
2018
✓ Answer:C360 W
h = 45 × 0.16 = 7.2 m. Using g = 10 m/s², P = 50 × 10 × 7.2/10 = 360 W.
105
If an object moves in a circular path, what is the work done on it in one rotation?
RRB ALP & Technician
17/08/2018 / Shift-III
2018
✓ Answer:AZero
The PDF keys zero, consistent with uniform circular motion under a radial force. A closed path alone does not guarantee zero work by an arbitrary force.
106
A machine does work W in time t with power p. If its power is doubled, how long will the same work take?
RRB Technician Grade-I
20/12/2024 / Shift-I
2024
✓ Answer:Ct/2
For fixed work, t = W/P. Doubling power halves the required time.
107
Average power is equal to:
RRB Group D
25/10/2018 / Shift-II
2018
✓ Answer:DTotal energy used / total time
Average power equals total energy transferred divided by total elapsed time.
108
A person raises a 25 kg load 2.5 m from the ground onto his head. Find the work done. (g = 10 m/s²)
RRB ALP & Technician
20/08/2018 / Shift-III
2018
✓ Answer:C625 J
W = mgh = 25 × 10 × 2.5 = 625 J.
109
Which equation relates power P to energy E and time t?
RRB Technician Grade-I
20/12/2024 / Shift-I
2024
✓ Answer:DP = E/t
Power is energy transferred per unit time: P = E/t.
110
A 50 kg boy climbs 40 stairs in 10 seconds. Each stair is 15 cm high. Find his power. (g = 10 m/s²)
RRB Group D
23/10/2018 / Shift-I
2018
✓ Answer:C300 W
h = 6 m. P = mgh/t = 50 × 10 × 6/10 = 300 W.
Showing 101 – 110 of 298 MCQ Questions | Page 11 of 30
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