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.
91
On which quantity does work done by a given force not directly depend?
RRB Group D; RRB Group D; RRB Group D; RRB Group D; RRB Group D
15/11/2018 / Shift-II; 12/12/2018 / Shift-I; 13/12/2018 / Shift-II; 02/11/2018 / Shift-I; 08/10/2018 / Shift-III
2018
✓ Answer:AInitial velocity of the object
W = Fs cos θ contains no independent initial-velocity term.
92
A worker lifts 10 kg of goods from the ground onto his head 1.1 m above the ground. Find the work done.
RRB Group D
05/10/2018 / Shift-III
2018
✓ Answer:D110 J
Using g = 10 m/s², W = mgh = 10 × 10 × 1.1 = 110 J.
93
When force and an object's motion are perpendicular to each other:
RRB Group D
24/10/2018 / Shift-I
2018
✓ Answer:BNo work is done.
W = Fs cos 90° = 0.
94
Power can be measured in kilowatts and watts. How many watts equal 1 kW?
RRB ALP (Stage-I)
28/11/2024 / Shift-II
2024
✓ Answer:B1000 W
The prefix kilo means 1000, so 1 kW = 1000 W.
95
A 50 kg boy climbs 40 stairs in 9 seconds. Each stair is 15 cm high. Find his power. (g = 10 m/s²)
RRB Group D
23/10/2018 / Shift-III
2018
✓ Answer:A333.33 W
h = 40 × 0.15 = 6 m. P = 50 × 10 × 6/9 ≈ 333.33 W.
96
Which angle between force and displacement gives negative work?
RRB Group D
09/10/2018 / Shift-I
2018
✓ Answer:D180°
At 180°, W = Fs cos 180° = -Fs.
97
A car engine produces a force of 10000 N and moves the car 1.2 km in 2 minutes. Find its power.
RRB Technician Grade-I
19/12/2024 / Shift-I
2024
✓ Answer:A100 kW
P = Fs/t = 10000 × 1200/120 = 100000 W = 100 kW.
98
Which physical quantity equals the product of force and velocity in the force direction?
RRB Group D
10/12/2018 / Shift-I
2018
✓ Answer:CPower
P = W/t = Fs/t = Fv.
99
A force of 125 N moves an object 5 m in its direction. Find the work done.
RRB Group D
09/10/2018 / Shift-I
2018
✓ Answer:D625 J
W = Fs = 125 × 5 = 625 J.
100
Which expression correctly relates power P, force F, time t, and distance d?
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