Tag: introduction to simple machines

Questions Related to introduction to simple machines

A pulley system has a single fixed pulley and a single movable pulley. Its mechanical advantage is ____ .

physics a little effort, lot of work motion in application common machines introduction to simple machines

  1. 1

  2. 2

  3. 3

  4. 4

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Correct Option: B

A simple machine :

physics a little effort, lot of work motion in application common machines introduction to simple machines

  1. magnifies the movement only

  2. enables to do more work by less effort

  3. changes the direction of force in all circumstances

  4. none of the above

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Correct Option: B

Which of the following does not represent a simple machine?

physics a little effort, lot of work motion in application common machines introduction to simple machines

  1. Lever

  2. Pulley

  3. Gear

  4. Steam engine

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Correct Option: D

Simple machines help us to do work more:

physics a little effort, lot of work motion in application common machines introduction to simple machines

  1. Easily

  2. Quickly

  3. None

  4. Both A and B

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Correct Option: A
Explanation:

simple machines help us work more easily and quickly. 

The radius of the press cylinder in a hydraulic press is equal to the diameter of its pump cylinder. Its mechanical advantage is __________.

physics a little effort, lot of work motion in application common machines introduction to simple machines

  1. 1

  2. 2

  3. 3

  4. 4

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Correct Option: D

A device which helps to lift heavy loads or speed up the motion or change the direction of force in the desired direction.

physics a little effort, lot of work motion in application common machines introduction to simple machines

  1. Machine

  2. Magnets

  3. Motor

  4. All

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Correct Option: A
Explanation:

A machine is a device which helps us to lift heavy loads or speed up the motion or change the direction of force in the desired direction. It can be used to obtain a gain in speed or in many more actions.

Any sloping flat surface along which a load can be easily pushed or pulled is called

physics a little effort, lot of work motion in application common machines introduction to simple machines

  1. Inclined plane

  2. Wedge

  3. Screq

  4. Lever

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Correct Option: A
Explanation:

Any sloping flat surface along which a load can be easily pushed or pulled is called Inclined plane. An inclined plane is a sloping surface behaving like a simple machine and has a mechanical advantage of always greater than 1.

Simple machine is classified into ....... major classes.

physics a little effort, lot of work motion in application common machines introduction to simple machines

  1. 6

  2. 3

  3. 4

  4. 5

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Correct Option: A
Explanation:
  • Six classes of simple machine are
  • Inclined plane.
  • Lever.
  • Pulley.
  • Screw.
  • Wedge.
  • Wheel and axle.

An external force applied to a simple machine to overcome the load is effort.

physics a little effort, lot of work motion in application common machines introduction to simple machines

  1. True

  2. False

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Correct Option: A

State true or false.
A crow bar is used for tearing a part a piece of wood.

physics a little effort, lot of work motion in application common machines introduction to simple machines

  1. True

  2. False

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Correct Option: B