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Simple Machines

This test is standardised achievment test in physics suitable for the students of cbse,icse and all other boards of class 6 and also useful for the students of different competitions and olympiads.

20 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Nut cracker is an example of which type of lever?

  1. First class lever
  2. Second class lever
  3. Third class lever
  4. Wedge
  5. Screw
Question 2 Multiple Choice (Single Answer)

A single person can lift a car by using machine called

  1. inclined plane
  2. chisel
  3. screw-jack
  4. tong
  5. axe
Question 3 Multiple Choice (Single Answer)

For a lever to be classified as a force multiplier,

  1. the load arm must be longer than the effort arm
  2. the load arm and the effort arm must be of the same length
  3. the load arm must be shorter than the effort arm
  4. any arm can be greater
  5. the length of the arms is calculated according to the effort
Question 4 Multiple Choice (Single Answer)

Why is an inclined plane used as a force multiplier?

  1. The mechanical advantage of inclined plane is less than one.
  2. The mechanical advantage of inclined plane is greater than one.
  3. The mechanical advantage of an inclined plane is equal to one.
  4. More force is needed.
  5. Load is multiplied by it.
Question 5 Multiple Choice (Single Answer)

Which of the following statements is not true for a simple machine?

  1. Mechanical advantage can be less than one.
  2. The efficiency may be less than 100%.
  3. The energy dissipated by the machine is the maximum.
  4. It can also be used as a speed multiplier.
  5. The mechanical advantage of a simple machine depends upon its weight.
Question 6 Multiple Choice (Single Answer)

The handle of a tube well (boring well) is a/an

  1. first class lever
  2. second class lever
  3. third class lever
  4. screw
  5. inclined plane
Question 7 Multiple Choice (Single Answer)

In a wheel and axle arrangement, the diameter of wheel should be

  1. equal to the diameter of axle
  2. smaller than the diameter of axle
  3. more than the diameter of axle
  4. independent of axle
  5. dependent on the direction of movement
Question 8 Multiple Choice (Single Answer)

Which of the following reduces the effort by changing the direction of force applied?

  1. Wedge
  2. Levers
  3. Screw
  4. Inclined plane
  5. Pulley
Question 9 Multiple Choice (Single Answer)

Which of the following is a class I lever?

  1. Fulcrum is between the load and the effort.
  2. Load is between the fulcrum and the effort.
  3. Effort is between the load and the fulcrum.
  4. Fulcrum, load and effort are all at one point.
  5. Fulcrum and effort are on the same point, but load is at either side.
Question 10 Multiple Choice (Single Answer)

Which of the following relationship is true?

  1. Effort * distance moved by effort = Load * distance moved by load.
  2. Effort * distance moved by effort > Load * distance moved by load
  3. Effort * distance moved by effort < Load * distance moved by load
  4. Effort / distance moved by effort = Load * distance moved by load
  5. Effort * distance moved by effort = Load / distance moved by load
Question 11 Multiple Choice (Single Answer)

What happens when the height of an inclined plane decreases?

  1. The mechanical advantage and effort both decrease.
  2. The mechanical advantage and effort both increase.
  3. The mechanical advantage increases, but effort decreases.
  4. The mechanical advantage decreases, but effort increases.
  5. It will not have any effect on the mechanical advantage.
Question 12 Multiple Choice (Single Answer)

In which of the following is the effort arm always greater than the load arm?

  1. First class lever
  2. Second class lever
  3. Third class lever
  4. Fourth class lever
  5. Fifth class lever
Question 13 Multiple Choice (Single Answer)

Which of the following is not a third class lever?

  1. Raising a load kept on the palm of a hand using the forearm
  2. Kicking a football by legs
  3. Spade used to lift a load
  4. Spade used for turning the soil
  5. Knife used for cutting an apple
Question 14 Multiple Choice (Single Answer)

A wedge is a triangular shaped tool that can be used to stop, split, seperate or hold an​ object in place. Which of the following things is not a wedge?

  1. Door stop
  2. Chisle
  3. Blade
  4. Scissors
  5. Axe
Question 15 Multiple Choice (Single Answer)

Which of the following statement is false about a pulley?

  1. Force is applied towards gravity
  2. Direction of force can be changed
  3. It is neither a speed multiplier nor a force multiplier
  4. Wheel is fixed over the axle
  5. It is used to lift heavy objects
Question 16 Multiple Choice (Single Answer)

The formula for the mechanical advantage of an inclined plane is

  1. load arm divided by effort arm
  2. distance divided by height
  3. height divided by distance
  4. effort arm multiplied by load arm
  5. half of the input arm divided by output arm
Question 17 Multiple Choice (Single Answer)

A lighter child can move a heavier child on a seesaw if :

  1. he stands on it
  2. he moves closer towards the fulcrum
  3. moves away from the fulcrum
  4. he lies on it
  5. he can not do this
Question 18 Multiple Choice (Single Answer)

Which of the following simple machines is termed as the revolving lever of first order?

  1. Screw
  2. Inclined plane
  3. Pulley
  4. Wheel and axle
  5. Wedge
Question 19 Multiple Choice (Single Answer)

What type of a simple machine would the bottom of a light bulb be?

  1. Wedge
  2. Lever
  3. Pulley
  4. Screw
  5. Wheel and axle
Question 20 Multiple Choice (Single Answer)

Why is it easy to draw water from a well when the rope passes over a pulley, rather then drawing it directly?

  1. Pulley adds more water
  2. Pulley decreases the weight of the bucket
  3. Pulley has a mechanical advantage of more than one
  4. Pulley changes the direction of force
  5. Pulley increases the effort
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