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होम › भौतिकी › Simple Machines

Simple Machines — Physics Questions & Practice

9 Simple Machines questions from Physics for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong. का अभ्यास करें

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Simple Machines पर अभ्यास प्रश्न — उत्तर सहित

Try each question first, then open the answer. Explanations are included.

1. What is a simple machine that consists of a rigid bar pivoted at a fixed point (fulcrum), used to lift loads?

  1. ALever
  2. BInclined plane
  3. CWedge
  4. DPulley
उत्तर दिखाएँ

उत्तर: A

A lever is a rigid bar that pivots around a fixed point (fulcrum), used to amplify force for lifting or moving loads.

2. What is a simple machine consisting of a wheel attached to a rod (axle), used to reduce the force needed to move an object?

  1. ALever
  2. BPulley
  3. CScrew
  4. DWheel and axle
उत्तर दिखाएँ

उत्तर: D

A wheel and axle consists of a wheel attached to a smaller rod (axle); rotating the wheel rotates the axle, reducing the force needed to do work.

3. What term describes the ratio of the distance moved by the effort to the distance moved by the load in a machine?

  1. ALoad ratio
  2. BVelocity ratio
  3. CEfficiency
  4. DMechanical advantage
उत्तर दिखाएँ

उत्तर: B

Velocity ratio is the ratio of the distance moved by the effort to the distance moved by the load in a simple machine.

4. What is a simple machine consisting of a wheel with a grooved rim, used to change the direction of a force?

  1. AScrew
  2. BWheel and axle
  3. CLever
  4. DPulley
उत्तर दिखाएँ

उत्तर: D

A pulley is a wheel with a grooved rim over which a rope or cable runs, used to lift loads by changing the direction of the applied force.

5. In a lever, what is the fixed point around which the lever rotates called?

  1. APivot arm
  2. BFulcrum
  3. CEffort
  4. DLoad
उत्तर दिखाएँ

उत्तर: B

The fulcrum is the fixed point or support around which a lever rotates.

Simple Machines और प्रश्न हल करें

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