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Simple Machine

Total questions: 35

Worksheet time: 26mins

Name
Class
Date
1.

Those device that makes our work easier and faster are called,...........

..

a)

Machine

b)

Simple machine

c)

Complex machine

d)

Mobile phone

2.
A fishing pole is an example of a compound machine. What simple machines are used to make up this compound machine?
a)
lever, wheel and axle, pulley
b)
wheel and axle, inclined plane, pulley
c)
wheel and axle, pulley, inclined plane
3.
Stairs
a)
wedge
b)
pulley
c)
inclined plane
d)
wheel and axle
4.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
5.
Name this simple machine.
a)
Lever
b)
Wedge
c)
Pulley
d)
Inclined Plane
6.
Name this simple machine. 
a)
Wheel and Axle
b)
Lever
c)
Pulley
d)
Wedge
7.
Name this simple machine. 
a)
Inclined Plane
b)
Lever
c)
Pulley
d)
Wedge
8.
Which of the following does a simple machine do?
a)
allows the users to apply less force over a longer distance
b)
reduce the amount of force needed to do work
c)
change the direction of the applied force
d)
all of the above
9.
Which is an example of how a simple machine changes the direction of a force?
a)
using a rope to pull a box up a hill
b)
using a rope and pulley to raise a flag
c)
using a slide to push a box down steps
d)
using an axle and wheel to make a wagon move forward
10.
Which statement correctly explains a compound machine?
a)
A compound machine is made up of one or more simple machines
b)
A compound machine is made up of two or more simple machines.
c)
A screw is a type of inclined plane.
d)
None of the above
11.

The fixed point where lever rotate is called.........

a)

Rotating point

b)

centre

c)

Fulcrum

d)

None of above

12.

Tick on the parts of lever.

a)

Load

b)

Fulcrum

c)

Groove

d)

Effort

e)

Rim

13.

There are (a)   types of simple machine.

14.

There are (a)   types of lever.

15.

Which type of lever is beam balance?

(a)  

16.

If two or more pulley are combined together then it is called (a)  

17.
Which is not a type of simple machines?
a)
spring
b)
screw
c)
pulley
d)
wedge
18.
A screw is made up of _________ wrapped around a post or rod.
a)
treads
b)
springs
c)
threads
d)
strings
19.
An object being lifted or moved is a
a)
load
b)
fulcrum
c)
force
d)
work
20.
What kind of lever has the fulcrum between the effort and the resistance and changes the direction of a force?
a)
1st Class Lever
b)
2nd Class Lever
c)
3rd Class Lever
d)
No Class Lever
21.
Hammers can be used to pull nails out of wood. What type of simple machine is a hammer?
a)
screw
b)
lever
c)
pulley
d)
inclined plane
22.
There are six major types of simple machines. Which of the following are all simple machines?
a)
lever ,wedge, inclined plane
b)
wheel and axle, screw, light
c)
magnet, wedge, inclined plane
d)
motor, inclined plane, wheel and axle 
23.

Formula to calculate input work is ..........

a)

E x Ed

b)

E x L

c)

L x Ld

d)

L x E

24.

Formula to calculate output work is ...........

a)

E x Ed

b)

L x Ld

c)

E x L

d)

L x Ed

25.

If the lever is in balanced condition then input work is always equal to (a)  

26.

The formula of MA is ...........

a)

L/E

b)

E/L

c)

E x L

d)

L x E

27.

Formula to calculate VR is ..........................

a)

Ld/Ed

b)

Ed/Ld

c)

Ed x Ld

d)

Ld x Ed

28.

Efficiency of a machine is 75% means that...............

a)

machine does 75% of work and 25% just disappear

b)

machine only does 25% of work and 75% is lost in friction

c)

machine does 75% work and 25% is lost in friction

d)

None of above

29.

The VR of single movable pulley is (a)  

30.

Those machine that has 100% efficiency are called (a)   machine.

31.

Principle of simple machine states that " In balanced condition ................. work is always equal to ................... work."

(a)  

32.

The turning effect of force is called (a)  

33.

Law of moment states that ..................................

a)

anticlockwise moment is not equal to clockwise moment

b)

in balance condition anticlockwise moment is not equal to clockwise moment

c)

in balanced condition anticlockwise moment is equal to clockwise moment

d)

in balanced condition anticlockwise moment is equal to anticlockwise moment

34.

Perfect machine have ..................efficiency

a)

only 99.99%

b)

100%

c)

less than 100%

d)

more than 100%

35.

If we shift the fulcrum towards load then our work will be ..................

a)

easier

b)

harder

c)

neither easier nor harder

d)

none of above is true

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