Practice Simple Machine RRB PYQ questions from Railway examinations, including RRB NTPC PYQ, RRB Group D PYQ, RRB JE PYQ, RRB ALP PYQ and RRB Technician PYQ. Simple Machine is an important Physics topic that has been introduced in 2026 in the NCERT Class 9 Science curriculum under the Work and Energy chapter, making it useful for students and competitive-exam aspirants to understand the basic concepts of machines and their applications.
This Simple Machine RRB PYQ collection covers important concepts such as mechanical advantage, velocity ratio, efficiency, load, effort, lever, pulley, inclined plane, wheel and axle, and basic machine calculations. Practicing these questions can help you revise the fundamentals and understand how Simple Machine concepts are applied in Railway examinations.
Whether you are preparing for RRB NTPC Simple Machine PYQ, RRB Group D Simple Machine PYQ, RRB JE Simple Machine PYQ, RRB ALP Simple Machine PYQ, or RRB Technician Simple Machine PYQ, practicing previous year questions can help you strengthen your Physics fundamentals and become familiar with calculation-based and concept-based questions.
Start practicing Simple Machine RRB PYQs and strengthen your Railway Physics preparation.
91
A machine receives 1200 J of input work and loses 300 J due to friction. Its efficiency is:
✓ Answer:C75%
Useful output work = 1200 − 300 = 900 J. Efficiency = 900/1200 × 100 = 75%.
92
A 100 N effort moves through 6 m and lifts a 300 N load through 2 m. The efficiency is:
✓ Answer:B75%
Input work = 100 × 6 = 600 J. Output work = 300 × 2 = 600 J. Efficiency = 600/600 × 100 = 100%.
93
A machine has MA = 0.5. Which statement is correct?
✓ Answer:BLoad is half the effort
MA = Load/Effort = 0.5, so the load is half the effort. Such a machine may be used for speed or distance advantage rather than force multiplication.
94
Which relationship is correct for an ideal machine?
✓ Answer:AMA = VR
For an ideal machine, efficiency is 100%, so MA/VR = 1 and therefore MA = VR.
95
If a machine has MA = 6 and lifts a 1200 N load, the effort is:
✓ Answer:B200 N
E = L/MA = 1200/6 = 200 N.
96
A machine uses 400 N effort to lift a 1000 N load. If the effort distance is 5 m and load distance is 1 m, its efficiency is:
✓ Answer:B50%
MA = 1000/400 = 2.5. VR = 5/1 = 5. Efficiency = (2.5/5) × 100 = 50%. Therefore the correct option is B.
97
A machine uses 400 N effort to lift a 1000 N load. If the effort distance is 5 m and load distance is 1 m, its efficiency is:
✓ Answer:B50%
MA = 1000/400 = 2.5. VR = 5/1 = 5. Efficiency = (MA/VR) × 100 = (2.5/5) × 100 = 50%. Therefore, option B is correct.
98
A machine has MA = 4 and efficiency = 80%. Its velocity ratio is:
✓ Answer:C5
η = MA/VR × 100. Thus 80 = 4/VR × 100, so VR = 5.
99
A 500 N load is lifted by an effort of 250 N. If the load moves 1 m and the effort moves 3 m, efficiency is:
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