MECHANICS QUESTION BANK 22203 AND ASSIGNMENT

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                                Applied Mechanics


           


    
Question bank for Practice SW-I

Subject: Applied Mechanics  22203 

      

QU.1) Answer the following questions                   2 Marks     Each 

1

Define force and state its SI units. And state characteristics of force

2

2

Define One Newton Force Or One Unit force .

2


  

 

3


Define following force system .

1. Coplanar forces.        2. Collinear forces..

3.Concurrent forces      4. Coplanar non-concurrent forces.

4

4

Define Scalar & Vector quantity with examples.

02

5

State principle of transmissibility of force.

2

6

Define  1) Simple Machine  2)Mechanical Advantage (MA) 3) Velocity Ratio (VR). 4) effort  5) effort lost in friction.6) load lost

6

7

Define ideal machine and state its characteristics.

4


8

State meaning of  Reversibility of a machine and  self locking machine.

2

  9

State  law of machine with meaning of each term with graph

2

10

The velocity ratio of a certain machine is 50. Determine the effort required to lift a load of 1500 N if the efficiency of the machine is 40 %

4

11

Certain machine has a law of machine P = 0.025 W + 20 N, with VR = 60. Calculate its efficiency at a load of 1 KN...

4

12

A machine has VR = 25 & law of machine is P = (0.01 W + 5) N. Find MA, efficiency & effort lost in friction when load is 1000 N. Also state whether the machine is reversible or not.

4



13

 Define resultant force. Write relation between resultant and equilibrant.

4


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14

Find the angle between two equal forces of magnitude 300 N each, if their resultant is 150 N.

4

15

Resolve each of the following forces into orthogonal components.

(i) 350 N acting South-West away.(ii) 200 N acting North-East away

(iii) 40 N acting 40° West of South away.(iv) 400 N acting due south away. 

4




 


            Chpt.1     Mechanics & Force system

QU.

Description

Marks

1

Define force and state its SI units.

02

2

Define rigid body with one example.

 

02

3

Define One Newton Force Or One Unit force 

02

4

State Bow’s Notation. Where it is used?

 01

5

State any two effects of force on a body.

02

 

6

Define following force system .

1. Coplanar forces.     2. Collinear forces..3.Concurrent forces     4. Coplanar non-concurrent forces. 5. Non-coplanar concurrent forces.6. Non-coplanar non-concurrent forces.    

04

7

. Define coplanar parallel force system along with neat sketch.

04

8

State principle of transmissibility of force.

02

9

 Differentiate between Statics and Dynamics.( any 2 points)

02

10

Define unlike parallel force system and general force system

02

11

Define Scalar & Vector quantity with examples.

02

12

STATE CHARACTERISTICS OF A FORCE

02






Assignment 2                 Applied Mechanics   

                         Chpt.2    Simple machine


QU.

Description

Marks

1

Define  1) Simple Machine  2)Mechanical Advantage (MA) 3) Velocity Ratio (VR). 4) effort  5) effort lost in friction.6) load lost

6

2

State different simple machines names .State any two uses of machines.

4

3

Define ideal machine and state its characteristics.

4

4

State VR  with meaning of each term , of following machines : 1)  Simple axle & wheel 2) differential axle and wheel 3) simple screw jack 4) worm & worm wheel  5) geared pulley block.

10

5

How will you find whether machine is reversible or not?

2

6

State meaning of  Reversibility of a machine and  self locking machine.

2

7

State  law of machine with meaning of each term with graph

2

8

The velocity ratio of a certain machine is 50. Determine the effort required to lift a load of 1500 N if the efficiency of the machine is 40 %

4

9

Certain machine has a law of machine P = 0.025 W + 20 N, with VR = 60. Calculate its efficiency at a load of 1 KN...

4

10

In a lifting machine, a load of 10 KN is Raised by effort of 300 N. If the efficiency is 75%. Calculate MA & VR, if the machine lifts a load by effort of 550 N. Find the law of machine.

4

11

In a machine, an effort of 2 N lifted a load of 30 N. If the effort lost due to friction at this load is 0.5 N, find the VR & efficiency of the machine.

4

12

A load of 1 KN is lifted by an effort of 56 N & 2 KN is lifted by an effort of 96 N. Find effort required to lift a load of 3 KN

4

13

A machine has VR = 25 & law of machine is P = (0.01 W + 5) N. Find MA, efficiency & effort lost in friction when load is 1000 N. Also state whether the machine is reversible or not.

4

 

                 QUESTION Bank   

Subject : Applied Mechanics       Branch : Mech/civil Engineering

1

Define force and state its SI units. And state characteristics of force

2

2

Define One Newton Force Or One Unit force .

2

 

3

Define following force system .

1. Coplanar forces.              2. Collinear forces..

3.Concurrent forces                                  4. Coplanar non-concurrent forces.

4

4

Define Scalar & Vector quantity with examples.

02

5

State principle of transmissibility of force.

2

6

Define  1) Simple Machine  2)Mechanical Advantage (MA) 3) Velocity Ratio (VR). 4) effort  5) effort lost in friction.6) load lost

6

7

Define ideal machine and state its characteristics.

4

8

State VR  with meaning of each term , of following machines : 1)  Simple axle & wheel 2) differential axle and wheel 3) simple screw jack 4) worm & worm wheel  5) geared pulley block.

10

9

State meaning of  Reversibility of a machine and  self locking machine.

2

  10

State  law of machine with meaning of each term with graph

2

11

The velocity ratio of a certain machine is 50. Determine the effort required to lift a load of 1500 N if the efficiency of the machine is 40 %

4

12

Certain machine has a law of machine P = 0.025 W + 20 N, with VR = 60. Calculate its efficiency at a load of 1 KN...

4

13

A machine has VR = 25 & law of machine is P = (0.01 W + 5) N. Find MA, efficiency & effort lost in friction when load is 1000 N. Also state whether the machine is reversible or not.

4

15

In a differential axle & wheel, the dia. of wheel is 400 mm & that of axle is 100 mm & 80 mm, if an effort of 50 N can lift a load of 1500 N, find VR & efficiency of the machine.

4

16

A screw jack has an effort wheel diameter of 300 mm & pitch is 6 mm. If a load of 1200 N is lifted by an effort of 200 N, find VR, MA & efficiency.

4

17

 Define resultant force. Write relation between resultant and equilibrant.

4

18

State Lami’s theorem.

State Varignon’s theorem

State law of parallelogram of forces with sketch and state its limitations

6

19

Find the angle between two equal forces of magnitude 300 N each, if their resultant is 150 N.

4

20

Find analytically the resultant of following concurrent force system. Refer to Figure 20 

FIG . 20                       FIG. 21

4

21

Calculate the magnitude and direction of resultant force of the force system as shown in Figure No.21. Use Analytical method.

4

22

 Calculate the tension induced in the cable used for the assembly shown in Figure  W = 1500 N. 

4

23

Resolve each of the following forces into orthogonal components.

(i) 350 N acting South-West away.(ii) 200 N acting North-East away

(iii) 40 N acting 40° West of South away.(iv) 400 N acting due south away. 

4













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