# Machines Worksheets – MCQ worksheet | Multiple Choice Questions from the Machines (simple & compound) chapter

Machines (simple and compound machines) – MCQ worksheets with answer

## Machines – MCQ Worksheet (with answer)

1. A machine can make work easier by
a. increasing the amount of force that is applied.
b. increasing the distance over which force is applied.
c. changing the direction in which force is applied.
d. any of the above
2. Examples of machines that increase force include
a. doorknobs.
b. hammers.
d. two of the above
3. How does a nutcracker change the force applied to it?
a. It increases the force that is applied.
b. It increases the distance over which force is applied.
c. It changes the direction in which force is applied.
d. two of the above
4. A machine that increases the applied force and also changes its direction is a
a. hammer.
c. pry bar.
d. doorknob.
5. Which of the following could be the efficiency of a machine?
a. 200%
b. 150%
c. 100%
d. 75%
6. What is the mechanical advantage of a machine that increases the distance over which force is applied?
a. less than 1
b. equal to 1
c. greater than 1
d. greater than 2
7. If the output force of a machine is greater than input force, the mechanical advantage of the machine is
a. greater than 1.
b. equal to 1.
c. less than 1.
d. any of the above

1. d
2. a
3. a
4. c
5. d
6. a
7. a

## Simple Machines – MCQ Worksheet (with answer)

1. Which type of simple machine is a chisel?
a. lever
b. screw
c. wedge
d. none of the above
2. Which of the following is an example of a screw?
a. spiral staircase
b. Ferris wheel
c. seesaw
d. axe
3. The ideal mechanical advantage of a screw is always
a. less than 1.
b. equal to 1.
c. greater than 1.
d. greater than 2.
4. Which class of lever does not change the direction of the applied force?
a. class 1
b. class 2
c. class 3
d. two of the above
5. Which of the following is an example of a third class lever?
a. seesaw
b. wheelbarrow
c. hockey stick
d. pry bar
6. A wheel and axle increase the applied force when
a. the input distance is equal to the output distance.
b. the input distance is less than the output distance.
c. the input force is applied to the wheel.
d. the output force is applied by the wheel.
7. How many rope segments pull up on the object in a single moveable pulley?
a. 1
b. 2
c. 3
d. 4

1. c
2. a
3. c
4. d
5. c
6. c
7. b

## Compound Machines – MCQ Worksheet (with answer)

1. Simple machines in a bicycle include
a. wheels and axles.
b. pulleys.
c. levers.
d. all of the above
2. Which of the following is a compound machine?
a. wheel and axle
b. scissors
c. pulley
d. lever
3. Which of the following machines contains one or more levers?
a. wheelbarrow
b. scissors
c. fishing rod
d. all of the above
4. The fulcrum in a pair of scissors is always located
a. between the input and output points.
b. closer to the input point.
c. closer to the output point.
d. two of the above
5. The mechanical advantage of a compound machine equals the
a. sum of the mechanical advantages of all its simple machines.
b. product of the mechanical advantages of all its simple machines.
c. highest mechanical advantage of all its simple machines.
d. average mechanical advantage of all of its simple machines.
6. The way friction is reduced in a compound machine such as a car is with
a. fans.
b. heaters.
c. lubricants.
d. none of the above

1. d
2. b
3. d
4. a
5. b
6. c