Quiz Questions - 16. Lever and Simple machine

Question 1 1 Marks

What is the velocity ratio of a wheel and axle if the radii of wheel and axle are 375 mm and 75 mm respectively?

A

3

B

4

C

5

D

6

Question 2 1 Marks

What is the efficiency of a simple screw jack having velocity ratio is 314.2 and mechanical advantage is 220?

A

0.6

B

0.65

C

0.7

D

0.75

Question 3 1 Marks

What is the name of fixed or supporting point of a lever?

A

Mechanical advantage

B

Fulcrum

C

Effort

D

Load

Question 4 1 Marks

What is the ratio between the distance moved by the effort to the distance moved by the load?

A

Mechanical advantage

B

Velocity ratio

C

Efficiency

D

Fulcrum

Question 5 1 Marks

What is the mechanical advantage, if a load of 1000 kg is lifted by a simple machine and effort applied is 250 kg?

A

6

B

8

C

3

D

4

Question 6 1 Marks

What effort required to lift a load of 150 kg in a wheel and axle, if the velocity ratio is 2.5 and the efficiency of the machine is 75%?

A

70 kg

B

80 kg

C

90 kg

D

100 kg

Question 7 1 Marks

Which is example for first order lever?

A

A wheel barrow

B

A pair of scissors

C

Fire tongs

D

Lime squeezer

Question 8 1 Marks

What is the distance of the load from the fulcrum called?

A

Effort arm

B

Load arm

C

Power arm

D

Effort

Question 9 1 Marks

Which order lever is claw hammer?

A

1st order lever

B

2nd order lever

C

3rd order lever

D

Curved lever

Question 10 1 Marks

How much load is lifted if an effort of 25 kg is applied to a simple machine having velocity ratio of 4 and efficiency 75%?

A

65 kg

B

70 kg

C

75 kg

D

80 kg

Question 11 1 Marks

What is the velocity ratio of a simple machine of a mass 120 kg is lifted to a height of 5 metres by a force of 60 kg moving 15 metre. Calculate velocity ratio?

A

1

B

2

C

3

D

4

Question 12 1 Marks

Which type of levers is bell cranked lever?

A

Curved lever

B

1st order lever

C

2nd order lever

D

3rd order lever

Question 13 1 Marks

Which is example for second order lever?

A

Common balance

B

A pair of scissors

C

Bottle opener

D

Human forearm

Question 14 1 Marks

Which is example for third order lever?

A

Common balance

B

Forceps

C

A pair of scissors

D

Lime squeezer