Machines Class 10 ICSE Physics MCQ Questions

Machines Class 10 ICSE Physics MCQ Questions

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1) The resistive force to be overcome by a machine is

a) Effort

b)Load

c) efficiency

d) Work

Ans-option(b)

2) Mechanical advantage is ratio of

a)load and efficiency

b) effort and force

c) Load and effort

d) Load and displacement

Ans- Option (c)

3) If the effort needed is greater than load then mechanical advantage is 

a) less than 1

b) greater than 1

c) equal to 1

d) Both (a)& (b)

Ans-option (a)

4) Mechanical advantage greater than one a machine acts as

a) gain in speed

b) force multiplier

c) no force multiplier

d) Both (a) and (b)

Ans-option (b)

5) A machine in which displacement of load is more than displacement of effort, then velocity ratio is

a) greater than 1

b)zero

c) equal to 1

d) less than 1

Ans-option (d)

6) Efficiency is

a) ratio of work output to work input

b) ratio of work input to work output

c) ratio of output energy to input energy.

d) ratio of input energy to output

Ans-option (a)

7) In ideal machine  there is no

a) loss of energy

b) gain of energy

c)different energy

d) Both (a) & (b)

Ans-option (a)

8) In actual machine

a) output energy is greater than input energy. b) output energy is equal to input energy

c) output energy is less than input energy

d) input energy is less than output energy.

Ans-option (c)

9) A lever works on

a) Principle of energy

b) Principle of moments. c) Principle of electromagnetism

d) Principle of lever

Ans- option (b)

10) If Load arm is equal to effort arm then mechanical advantage is

a) greater than 1

b) Less than 1

c)zero

d) equal to 1

Ans-option (d)

11) A pair of scissors is an example of

a) class II levers

b) class I levers

c) class III levers.

d) None of these

Ans-option (b)

12)  The mechanical advantage and velocity ratio are always more than 1 in

a) class I levers

b) class III levers

c)class II Levers

d) None of these

Ans-option (c)

13) In Class III levers  their is gain in

a) force

b) energy

c) speed

d) both (a)and (c)

Ans-option (c)

14) calculate ideal mechanical advantage of a lever when effort arm is 80cm and load arm is 5cm

a) 16 b) 20 c)17 d) 18

Ans- option (a)

Ideal mechanical advantage

=effort arm / load

=80/5=16

15) raising a load by forearm is an example of

a) class I levers

b) class III levers

c) class II levers

d) None of these Ans-Option (b)

16) A fixed pulley in which axis of rotation is

a)changing

b) movable

c)stationary

d) both (a) &(b)

Ans-option (c)

17) In Single movable pulley its velocity ratio is    

a) 2

b) less than 2

c) 1

d) less than 1

Ans- Option (a).

18) In  fixed pulley the load move in a

(a) same direction to that of effort

b) opposite direction to that of effort

c) equal direction to that of effort

d) Both (a) & (b)

Ans- option(b

19) Name machine which is used to multiply force

a) a movable pulley

b) single fixed pulley

c) class III lever

d) class I lever.

Ans- option (a)

Q20) – The mechanical advantage of an ideal single fixed Pulley is

a) 2

b) 1

c) less than 1

d) less than 2

Ans- option (b)

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Updated: August 25, 2022 — 1:57 am

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