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.
111
A 5.0 kg object is raised 2 m. Find the work done. (g = 9.8 m/s²)
RRB ALP & Technician
20/08/2018 / Shift-III
2018
✓ Answer:D98 J
W = mgh = 5 × 9.8 × 2 = 98 J.
112
The rate of doing work is called:
RRB ALP (Stage-II); RRB Technician Grade-III; RRB ALP & Technician; RRB Group D; RRB Group D; RRB Group D; RRB Group D; RRB Group D
02/05/2025 / Shift-II; 26/12/2024 / Shift-III; 14/08/2018 / Shift-II; 17/09/2018 / Shift-III; 19/09/2018 / Shift-I; 15/10/2018 / Shift-II; 05/10/2018 / Shift-I; 22/10/2018 / Shift-III
2025; 2024; 2018
✓ Answer:CPower
P = W/t defines power.
113
A 50 kg boy climbs 45 stairs in 9 seconds. Each stair is 15 cm high. Find his power. (g = 10 m/s²)
RRB Group D
22/09/2018 / Shift-I
2018
✓ Answer:D375 W
h = 45 × 0.15 = 6.75 m. P = 50 × 10 × 6.75/9 = 375 W.
114
A 5 kg object is raised 4 m. Find the work done by gravity. (g = 10 m/s²)
RRB ALP & Technician
21/08/2018 / Shift-III
2018
✓ Answer:D-200 J
Wgravity = -mgh = -5 × 10 × 4 = -200 J.
115
Which is not a unit of power?
RRB Group D
24/08/2022 / Shift-I
2022
✓ Answer:AKilowatt-hour
Kilowatt-hour is a unit of energy. Watt, joule/second, and horsepower are power units.
116
A girl weighing 40 N climbs a rope for 20 seconds at a power of 160 W. What height does she reach?
RRB Group D
18/09/2018 / Shift-III
2018
✓ Answer:A80 m
h = Pt/weight = 160 × 20/40 = 80 m.
117
A 20 kg object is raised through 2 m. What work is done by gravity on the object?
RRB ALP & Technician
14/08/2018 / Shift-II
2018
✓ Answer:A400 J
Source inconsistency: the PDF keys A, +400 J, but work done by gravity during an upward lift is -mgh = -400 J for g = 10 m/s². The printed key is retained.
118
How is power interpreted?
RRB Group D
19/09/2018 / Shift-I
2018
✓ Answer:CRate of doing work or transferring energy
Power is work done or energy transferred per unit time.
119
A 50 kg boy climbs 44 stairs in 10 seconds. Each stair is 15 cm high. Find his power.
RRB Group D
24/09/2018 / Shift-I
2018
✓ Answer:D330 W
h = 44 × 0.15 = 6.6 m. Using g = 10 m/s², P = 50 × 10 × 6.6/10 = 330 W.
120
Work done by a motor per unit time is called:
RRB ALP (Stage-II); RRB ALP (Stage-I)
02/05/2025 / Shift-I; 25/11/2024 / Shift-II
2025; 2024
✓ Answer:APower
Power is the rate of doing work: P = W/t.
Showing 111 – 120 of 298 MCQ Questions | Page 12 of 30
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