Free Printable EP PET-1

1.

1. Elastic bodies _____________after the removal of applied forces

a)

a) can regain its original shape

b)

b) does not regain its original shape

c)

c) breaks down

d)

d) None of the above

2.

2. The magnitude of restoring force is_______

a)

a) not equal to external forces

b)

b) equal to external force

c)

c) less than the external force

d)

d) greater than external force

3.

3. What is the unit of stress?

a)

a) N/m^-2

b)

b) N/m²

c)

c) Nm

d)

d) no unit

4.

4. What is strain?

a)

a) ratio of force per unit area

b)

b) ratio of change in dimension to original dimension

c)

c) stress is proportional to strain

d)

d) none of the above

5.

5. Which one of the following is true as per Hooke’s law

a)

a) Deformation is proportional to force

b)

b) Force is proportional to deformation

c)

c) strain is proportional to stress

d)

d) stress is proportional to strain

6.

6. How many types elastic moduli are there?

a)

a) Five

b)

b) Two

c)

c) Three

d)

d) Six

7.

7. Youngs modulus is the ratio of

a)

a) linear strain to linear stress

b)

b) linear stress to linear strain

c)

c) volume stress to volume strain

d)

d) none of the above

8.

8. Rigidity modulus is the ratio of

a)

a) shearing strain to shearing stress

b)

b) tangential stress to shearing strain

c)

c) volume stress to volume strain

d)

d) linear stress to linear strain

9.

9. SI Unit of Bulk modulus is

a)

a) no unit

b)

b) Nm^-2

c)

c) Wm^-1K^-1

d)

d) Kelvin

10.

10. What happens to the neutral axis when a beam is loaded?

a)

a) It undergoes elongation

b)

b) It undergoes compression

c)

c) It does not undergo elongation and compression

d)

d) None of the above

11.

11. Internal bending moment of Beam is

a)

a) YI/R

b)

b) RI/Y

c)

c) RI/Y

d)

d) None of the above

12.

12. Tensile strength is

a)

a) Strain/stress

b)

b) Maximum tensile load/original cross-sectional area

c)

c) Ultimate tensile stress/working stress

d)

d) Stress/strain

13.

13.Safety factor is given by

a)

a) Strain/stress

b)

b) Maximum tensile load/original cross-sectional area

c)

c) Ultimate tensile stress/working stress

d)

d) Stress/strain

14.

14. Restoring force is

a)

a) Internal force

b)

b) External force

c)

c) Deforming force

d)

d) None of the above

15.

15. Beyond the yield point, the applied stress is

a)

a) Proportional to strain

b)

b) Not proportional to strain

c)

c) Inversely proportional strain

d)

d) None of the above

16.

16. Metals with smaller grains size have __________value, when compared to metals with larger grain size

a)

a) high elasticity

b)

b) less elasticity

c)

c) equal elasticity

d)

d) no elasticity

17.

17. Moment of force is given by

a)

a) YI/R

b)

b) F x d

c)

c) F

d)

d) None of the above

18.

18. Cantilever is a beam which is

a)

a) Loaded at both end

b)

b) Fixed at one end and loaded at another end

c)

c) Fixed at both ends

d)

d) None of the above

19.

19. Any rotating member which is transmitting torque is called

a)

a) shaft

b)

b) power

c)

c) source

d)

d) load

20.

20. At equilibrium condition, External bending moment is

a)

a) Equal to internal bending moment

b)

b) Not equal to internal bending moment

c)

c) Greater than internal bending moment

d)

d) Less than internal bending moment

21.

21. The maximum stress up to which a body exhibits the property of elasticity is

a)

a) Plastic limit

b)

b) Elastic limit

c)

c) Yield point

d)

d) Breaking point

22.

22. At yield point, slight increase in stress produces

a)

a) No strain

b)

b) Larger strain

c)

c) Small strain

d)

d) None of the above

23.

23. What are the factors affecting elastic modulus and tensile strength ?

a)

a) effect of stress

b)

b) effect of change in temperature

c)

c) effect of impurities

d)

d) all the above

24.

24. The elasticity of material________ on increasing the temperature.

a)

a) Decreases

b)

b) Increases

c)

c) Will not

d)

d) None of the above

25.

25. Hammering of material results, in _______ in elastic property

a)

a) Increase

b)

b) No change

c)

c) Decrease

d)

d) None of the above

26.

26. For metal, the modulus of elasticity is more in

a)

a) Polycrystal

b)

b) Single crystal

c)

c) Amorphous

d)

d) None of the above

27.

27. Twisting couple per unit twist is given by

a)

$C=\frac{\pi nr^4}{2l}$

b)

$C=\frac{\pi n^2r^4}{2l}$

c)

$C=\frac{\pi nr}{l}$

d)

$C=\frac{\pi nr^2}{l}$

28.

28. The time period of oscillation is

a)

$T=2\pi\sqrt{\frac{I}{C}}$

b)

$T=\pi\sqrt{\frac{C}{I}}$

c)

$T=2\pi\sqrt{\frac{1}{C}}$

d)

$T=2\pi IC$

29.

29. what is the unit of strain?

a)

a) Nm^-2

b)

b) Wm^-1K^-1

c)

c) Kelvin

d)

d) no unit

30.

30. Stress is given by

a)

a) Deforming force/Area

b)

b) Deforming force x Area

c)

c) Area /Deforming force

d)

d) None of the above

EP PET-1

Total questions: 30

Worksheet time: 3600secs

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