Free Printable Phy-ICSE-X-Machines-Pulley

1.

The ideal mechanical advantage of a single movable pulley

a)

1

b)

2

c)

3

d)

4

2.

In a single fixed pulley, the direction of load and effort is ________.

a)

same

b)

opposite each other

c)

depends on design

d)

depends on number of pulleys

3.

As the direction of effort and direction of load is in the opposite direction, one can use his/her own weight as effort for

a)

single fixed pulley

b)

single movable pulley

c)

single movable pulley with a fixed pulley

d)

all the options

4.

For a combination of one fixed pulley with 5 movable pulleys the ideal M.A value will be equal to

a)

1

b)

2

c)

32

d)

64

5.

For a block and tackle system of 5 pulleys with the top pulley having the free end of the string, the M.A =

a)

1

b)

2

c)

3

d)

5

6.

In a block & tackle system of pulleys, the efficiency decreases due to

a)

friction in bearings

b)

weight of strings

c)

weight of lower block of pulleys

d)

weight of upper block of pulleys

7.

For a block & tackle system, M.A =

a)

$V.A$

b)

$1-\frac{w}{n.E}$

c)

$n.T$

d)

$n-\frac{w}{E}$

8.

For a block & tackle system, in practice
$\eta\ =$

a)

$n.T$

b)

$n.E$

c)

$1\ -\ \frac{w}{n.E}$

d)

$n\ -\ \frac{w}{E}$

9.

Velocity Ratio = number of pulleys

a)

single movable pulley

b)

several pulleys in two blocks

c)

one fixed pulley with multiple movable pulleys

d)

only when M.A < 1

10.

In the case of a Single movable pulley

a)

$E\ =L$

b)

$E\ =\ \frac{L}{2}$

c)

$E\ =\ 2L$

d)

$E\ =L^2$

Phy-ICSE-X-Machines-Pulley

Total questions: 10

Worksheet time: 20mins

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