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.
81
A real machine has MA = 3 and VR = 4. Its efficiency is:
✓ Answer:C75%
Efficiency = (MA/VR) × 100 = (3/4) × 100 = 75%.
82
Which simple machine is designed primarily for splitting or cutting material?
✓ Answer:AWedge
A wedge concentrates force at its sharp edge, making it suitable for cutting or splitting.
83
A lever has an effort arm of 60 cm and a load arm of 20 cm. For an ideal lever, MA is:
✓ Answer:C3
For an ideal lever, MA = effort arm/load arm = 60/20 = 3.
84
An ideal fixed pulley has mechanical advantage:
✓ Answer:B1
A fixed pulley changes the direction of effort but ideally does not multiply the force. Therefore MA = 1.
85
Why is the effort distance larger in a force-multiplying pulley system?
✓ Answer:AEnergy conservation
To obtain a smaller force over a larger load force, the effort must generally move through a greater distance so that work is conserved.
86
A steering wheel is mainly an example of:
✓ Answer:AWheel and axle
A steering wheel is connected to an axle; rotating the wheel turns the axle.
87
If friction in a machine increases while load and useful output remain the same, the required input effort generally:
✓ Answer:BIncreases
More friction means more energy is lost, so additional effort is required to deliver the same useful output.
88
Which statement correctly compares mechanical advantage and efficiency?
✓ Answer:BMA is a force ratio, while efficiency compares useful output work with input work
MA = Load/Effort, a force ratio. Efficiency = useful output work/input work × 100%, so they describe different aspects of a machine.
89
A machine is used to move a load faster rather than to multiply force. Which type of advantage may be intentionally obtained?
✓ Answer:ASpeed/distance advantage
Some machines, especially third-class levers, sacrifice force advantage to give greater movement or speed at the load.
90
Why can a machine with MA less than 1 still be useful?
✓ Answer:AIt can provide greater speed or distance of movement
A machine with MA < 1 may provide a speed or distance advantage, making the load move faster or through a larger distance.
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