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.
201
The kinetic energy of a moving object depends on its:
RRB ALP & Technician
14/08/2018 / Shift-III
2018
✓ Answer:DMass and velocity
The standard expression is K = (1/2)mv². The PDF keys D; K can also be written in terms of momentum and mass.
202
An 11 kg object is 5 m above the ground. Find its energy. (g = 9.8 m/s²)
RRB Group D
11/10/2018 / Shift-III
2018
✓ Answer:A539 J
U = mgh = 11 × 9.8 × 5 = 539 J.
203
Which energy of the wind does a windmill use?
RRB NTPC (Stage-I)
09/02/2021 / Shift-II
2021
✓ Answer:BKinetic energy
Moving air has kinetic energy that can drive a windmill.
204
In hydroelectric generation, which energy is converted into electrical energy?
RRB ALP & Technician
29/08/2018 / Shift-I
2018
✓ Answer:DKinetic energy
The source gives D: kinetic energy. Flowing water drives the turbine, converting kinetic energy into mechanical energy, which the generator converts into electrical energy.
205
A 14 kg object is 5 m above the ground. Find its energy. (g = 9.8 m/s²)
RRB Group D
15/10/2018 / Shift-II
2018
✓ Answer:C686 J
U = 14 × 9.8 × 5 = 686 J.
206
If air resistance is negligible, the sum of potential and kinetic energy of a freely falling object is:
RRB Group D
28/11/2018 / Shift-I
2018
✓ Answer:DConstant
Mechanical energy is conserved when only gravity does work.
207
In which activity is potential energy converted into kinetic energy?
RRB ALP & Technician
31/08/2018 / Shift-III
2018
✓ Answer:DA pendulum swinging
As a pendulum moves downward, gravitational potential energy becomes kinetic energy.
208
A 15 kg object is 10 m above the ground. Find its energy. (g = 10 m/s²)
RRB Group D
31/10/2018 / Shift-III
2018
✓ Answer:D1500 J
U = 15 × 10 × 10 = 1500 J.
209
A house consumes 900 × 10⁶ J of energy in a month. How many electrical units is this?
RRB Group D
26/11/2018 / Shift-III
2018
✓ Answer:D250
1 unit = 1 kWh = 3.6 × 10⁶ J. Units = 900/3.6 = 250.
210
If an object's momentum triples while its mass remains constant, its kinetic energy:
RRB ALP & Technician
31/08/2018 / Shift-II
2018
✓ Answer:CBecomes nine times the original
K = p²/(2m), so tripling p multiplies K by 3² = 9.
Showing 201 – 210 of 298 MCQ Questions | Page 21 of 30
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