MCQs of Basics of stress and strain (Fundamentals of Machine Design - 3141907)

Fundamentals of Machine Design (3141907) MCQs

MCQs of Basics of stress and strain

Showing 21 to 30 out of 39 Questions

21.

Which of the following statement is wrong?

(a)	The deformation of the bar per unit length in the direction of the force is called linear strain.
(b)	The Poisson's ratio is the ratio of lateral strain to the linear strain.
(c)	The ratio of change in volume to the original volume is called volumetric strain.
(d)	The bulk modulus is the ratio of linear stress to the linear strain.

22.

The elasticity is the property of a material which enables it to

(a)	regain its original shape after deformation when the external forces are removed
(b)	draw into wires by the application of a tensile force
(c)	resist fracture due to high impact loads
(d)	retain deformation produced under load permanently

23.

The plasticity is the property of a material which enables it to

(a)	regain its original shape after deformation when the external forces are removed
(b)	draw into wires by the application of a tensile force
(c)	resist fracture due to high impact loads
(d)	retain deformation produced under load permanently

24.

The unit of modulus of elasticity is same as those of

(a)	stress, strain and pressure
(b)	stress, force and modulus of rigidity
(c)	strain, force and pressure
(d)	stress, pressure and modulus of rigidity

25.

The modulus of elasticity for mild steel is approximately equal to

(a)	$80 k N / m m^{2}$
(b)	$100 k N / m m^{2}$
(c)	$110 k N / m m^{2}$
(d)	$210 k N / m m^{2}$

26.

If the modulus of elasticity of a material is twice its modulus of rigidity, then the Poisson's ratio of the material is equal to zero.

(a)	Correct
(b)	Incorrect

27.

When a body is subjected to three mutually perpendicular stresses, of equal intensity, the ratio of direct stress to the corresponding volumetric strain is known as

(a)	Young's modulus
(b)	modulus of rigidity
(c)	bulk modulus
(d)	Poisson's ratio

28.

Resilience is the

(a)	energy stored in a body when strained within elastic limits
(b)	energy stored in a body when strained up to the breaking of the specimen
(c)	maximum strain energy which can be stored in a body
(d)	none of the above

29.

The ability of a material to absorb energy when it is deformed elastically, and release that energy upon unloading is known as

(a)	elasticity
(b)	resilience
(c)	endurance
(d)	toughness

30.

The maximum energy that can be absorbed up to the elastic limit, without creating a permanent distortion, is known as

(a)	impact energy
(b)	proof resilience
(c)	proof stress
(d)	modulus of resilience

Showing 21 to 30 out of 39 Questions