Free Printable X-Machine

1.

The type of lever where the fulcrum is between load and effort.

a)

type 1

b)

type 2

c)

type 3

d)

all types of levers

2.

The type of lever where load is between fulcrum and effort.

a)

type 3

b)

type 2

c)

type 1

d)

all types of levers

3.

The type of lever where effort is between fulcrum and load.

a)

type 1

b)

type 2

c)

type 3

d)

type 4

4.

Mechanical Advantage =

a)

$\frac{Effort}{Load}$

b)

$\frac{Load}{Effort}$

c)

$\frac{length\ of\ effort\ arm}{length\ of\ load\ arm}$

d)

$\frac{length\ of\ load\ arm}{length\ of\ effort\ arm}$

5.

Velocity Ratio =

a)

$\frac{Effort}{Load}$

b)

$\frac{Load}{Effort}$

c)

$\frac{length\ \ of\ \ effort\ \ arm}{length\ \ of\ \ load\ \ arm}$

d)

$\frac{displacement\ of\ effort}{displacement\ of\ load}$

6.

$Efficiency\ \left(\eta\right)\ =\$

a)

$\frac{M.A}{V.R}$

b)

$\frac{V.R}{M.A}$

c)

$\frac{load}{effort}$

d)

$\frac{load\ arm}{effort\ arm}$

7.

When M.A and V.R are greater than 1, the machine

a)

gains speed

b)

helps to change direction of effort

c)

acts as a force multiplier

d)

has high efficiency

8.

If the velocity ratio of a machine is 1, the machine _______________________.

a)

acts as a force multiplier

b)

generally changes direction of effort.

c)

gains in speed

d)

none of the options

9.

According to principle of moments

a)

$\frac{load}{effort}\ =\ \frac{effort\ \ arm}{load\ \ arm}$

b)

$\frac{load}{effort}\ =\ \frac{load\ \ arm}{effort\ \ arm}$

c)

load x effort arm = effort x load arm

d)

load + load arm = effort + effort arm

10.

In this image,

a)

the machine is decreasing mechanical advantage

b)

the machine is increasing mechanical advantage

c)

mechanical advantage is not changed

11.

How do you calculate the machine advantage?

a)

By counting the number of ropes

b)

By counting the number of wheels

c)

By finding the mass of the load

d)

By finding the net force

12.

What is the mechanical advantage of the pulley system below?

a)

1

b)

2

c)

3

d)

4

13.

What is the ideal mechanical advantage (IMA) of this pulley?

a)

0

b)

1

c)

2

14.

What is the ideal mechanical advantage of this pulley?

a)

1

b)

2

c)

3

d)

4

15.

What is the VR of a single movable pulley?

(a)

16.

In a single movable pulley if the effort moves by a distance of x upwards, by what height is the load raised?

a)

x/2

b)

2x

c)

2/x

d)

1/2

17.

A pulley system with a velocity ratio 4 is used to lift a load of 300 kgf to a vertical height of 10m by applying an effort of 100 kgf downwards. Find the efficiency of the pulley system and the work done by the effort.

a)

55%

b)

75%

c)

70%

d)

45%

X-Machine

Total questions: 17

Worksheet time: 9mins

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