STRENGTH OF MATERIAL MCQ-09

Q.1 Stress in a beam and the second modulus are _____.

A. Inversely proportional

B. Directly proportional

C. Equal

D. None of the above

Ans-: A

Q.2 According to Hooke's law, stress and strain are _____.

A. Equal

B. Inversely proportional

C. Directly proportional

D. None of the above

Ans-: C

Q.3 Principal plane carry ____ shear stress.

A. Maximum

B. No 

C. Minimum

D. None of the above

Ans-: B

Q.4  On the mutually perpendicular planes shear stress are ___.

A. Zero

B. Maximum

C. One

D. Equal

Ans-: D

Q.5 Stress in a beam and moment are 

A. Directly proportional

B. Inversely proportional

C. Equal

D. Zero

Ans-: A

Q.6 The steel bars in a concrete beam are embedded ___.

A. At top section

B. Near the top section

C. Near bottom section

D. Any where

Ans-: C

Q.7 The ratio of coil diameter to wire diameter of spring is known as ____.

A. Coil index

B. Spring index

C. Spring capacity

D. None of the above

Ans-: B

Q.8 Which types of beams occur the points of contraflexure?

A. Fixed beam

B. Overhanging beam

C. Cantilever beam

D. A+B

Ans-: D

Q.9 What is the bending moment at hinge?

A. Zero

B. One 

C. 1/4

D.1/2

Ans-: A

Q.10 Stiffness of a beam is ____ to the deflection.

A. Directly proportional

B. Equal

C. Zero

D. Inversely proportional

Ans-: D

STRENGTH OF MATERIAL MCQ-09

Q.1 Hoop stress in thin walled cylinder is ___.

A. Shear stress

B. Radial stress

C. Circumferential tensile stress

D. Longitudinal stress

Ans-: C

Q.2 In the thick cylinder the stresses at any point are ____.

A. Shear

B. Compressive

C. Tensile

D. Principal

Ans-: D

Q.3 The rate of change of shear force at any section is equal to ____.

A. Intensity of loading

B. Deflection

C. Slope

D. Bending

Ans-: A

Q.4 Bending moment is maximum or minimum when shear force along a section is ____.

A. Minimum

B. Zero

C. Maximum

D. None of the above

Ans-: B

Q.5 What happened? When a strip made of Copper and iron is heated .

A. It does not bend

B. It bend with iron at convex side

C. It bend with copper 

D. It bend with copper at concave side

Ans-: B

Q.6 For a cantilever beam carrying concentrated load at end of the beam , the moment diagram will be ?

A. Square

B. Triangle

C. Rectangle

D. Circle

Ans-: B

Q.7 The design of thin cylindrical shell is based on ___.

A. Shear stress

B. Shear strain

C. Hoop stress

D. Longitudinal stress

Ans-: C

Q.8 In a laminated spring the strips are provided in different length for which purpose?

A. Better look

B. Light in weight

C. Equal distribution of stress

D. None of the above

Ans-: C

Q.9 Ratio of thickness to diameter for thin cylinder is ___.

A. 1/20

B.1/50

C.1/30

D. 1/10

Ans-: A

Q.10 During impact loading the stress developed as compared to gradually applied load is __.

A. 2 times 

B. 3 times

C. 1.5 times

D. Zero

Ans-: A

STRENGTH OF MATERIAL

Q.1 Torsion bar are in ______ if same torque acts in each.

A. Parallel

B. Series

C. A+B

D. None of the above

Ans-: B

Q.2 Section modulus Z is expressed as 

A. E/I

B. M/I

C. EI

D. I/y

Ans-: D

Q.3 Strength of a beam is proportional to the square of its ___.

A. Depth

B. Length

C. Width

D. Thickness

Ans-: A

Q.4 The ratio of stress intensity to volumetric strain is known as ___.

A. Modulus of elasticity

B. Modulus of rigidity

C. Bulk modulus of a material

D. None of the above

Ans-: C

Q.5 For a cantilever beam carrying uniformly distributed load ,the moment diagram will be__.

A. Cubic

B. Triangle

C. Parabola

D. Rectangle

Ans-: C

Q.6 Strength of beam is directly proportional to it's

A. Depth

B. Width

C. Length

D. Hight

Ans-: B

Q.7 The steel bars in reinforced cement concrete beam are located at ____.

A. Bottom

B. Top

C. Centre

D. Neutral axis

Ans-: A

Q.8 The bending moment on a section is _______ where shearing force is maximum.

A. Minimum

B. Zero

C. One

D. Maximum

Ans-: D

Q.9 Moment of a beam is defined as it's section modulus multiplied by 

A. Strain

B. Toughness

C. Stress

D. Moment of inertia

Ans-: C

Q.10  The rate of change of bending moment is equal to _____ at the section.

A. Stress

B. Strain

C. Unit stress

D. Shear force

Ans-: D

STRENGTH OF MATERIAL MCQ-07

Q.1 Which type of pressure , a key is subjected as a side pressure as well at shearing forces?

A. Couple force

B. Bearing stresses

C. Fatigue stresses 

D. Shearing stresses

Ans-: B

Q.2 The unit of stress is ?

A. Pascal

B. N/m

C. Kg/m

D. Newton

Ans-: A

Q.3 The ration of the elastic limit to actual stress is known as____.

A. Toughness

B. Factor of safety

C. Factor of stress

D. None of the above

Ans-: B

Q.4 The maximum shear stress developed in a beam of rectangular cross-section is ____ the average shear stress.

A. 2 times

B. 3 times

C. 1.5 times

D. 2.5 times

Ans-: C

Q.5 The ratio of maximum shear stress developed in a rectangular section and circular section of the same area of cross-section is ___.

A. 2.5

B. 4/5

C. 3/4

D. 9/8

Ans-: D

Q.6 Shear stress induced in a shaft subjected to tension will be__.

A. Maximum at centre

B. Minimum at centre

C. Variable

D. None of the above

Ans-: D

Q.7 A structural member subjected to an axial compressive force is called ____.

A. Beam

B. Frame

C. Strut

D. Column

Ans-: C

Q.8 Pressure vessels are not made of rectangular shape, because

A. They do not give pleasing appearance

B. Difficult to fabricate

C. They are not economical

D. None of the above

Ans-: C

Q.9 What happened in winter, when a cylindrical vessel was sealed in summer.

A. Explode

B. Nothing

C. Become tighter

D. Buckle and collapse

Ans-: D

Q.10 In the case of thick cylinder, the ratio of cylinder diameter to wall thickness is less than or equal to ____.

A.10

B. 25

C. 20

D. 35

Ans-: C

STRENGTH OF MATERIAL MCQ-06

Q.1 Which of the following material are used for making of rivets ?

A. Hard

B. Brittle

C. Ductile

D. Malleable

Ans-: C

Q.2 The ratio of shear stress to shear strain is known as______.

A. Volumetric strain

B. Modulus of rigidity

C. Modulus of elasticity

D. Modulus of resilience

Ans-: B

Q.3 Twisting couple in a shaft introduces in it__.

A. Shear strain

B. Shear stress

C. Stress

D. Bending

Ans-: B

Q.4 The diameter of rivets in mm for a plate of thickness 't' mm is taken as _____.

A. 6.05 √ t

B. 5.03 √t

C. 0.05 √t

D. 2 t

Ans-: A

Q.5 What happened when increase the number of rows of rivets 

A. Increase/decrease of efficiency of joint depends upon number of rivets used.

B. Increase the efficiency of the rivet joint

C. Decrease the efficiency of the rivet joint

D. None of the above

Ans-: A

Q.6 Thin cylinders are used to store ____.

A. Water 

B. Gas

C. Steam

D. Oil

E. All of the above

Ans-: E

Q.7 A structure, made up of several bars ,joined together is known as___.

A. Beam

B. Column

C. Strut

D. Frame

Ans-: D

Q.8 Seamless cylindrical section have ____ joint.

A. Two

B. Five

C. Four

D. No joint ( zero )

Ans-: D

Q.9 A frame which have sufficient number of members to keep it in equilibrium is known as_.

A. Deficient beam

B. Perfect beam

C. Ideal beam

D. Equilibrium beam

Ans-: B

Q.10 The ratio of longitudinal stress to longitudinal strain is known as ___.

A. Modulus of elasticity

B. Modulus of rigidity

C. Young's modulus

D. Creep

Ans-: C

STRENGTH OF MATERIAL MCQ-05

Q.1 The total strain energy stored in a body is known as __.

A. Resilience

B. Proof resilience

C. Modulus of elasticity

D. Creep

Ans-: A

Q.2 Resilience of a material is considered when it is subjected to __.

A. Fatigue

B. Creep

C. Shock loading

D. Impact load

Ans-: C

Q.3 The loss of ____ in compression due to overloading is known as Bouschinger effect.

A. Stress

B. Energy

C. Power

D. Strength

Ans-: D

Q.4 generally flow stress is corresponds to plastic deformation of ______.

A. Liquid

B. Solid

C. Semi liquid

D. None of the above

Ans-: B

Q.5 A non-yielding support implies that the slope of the beam at the support is 

A. Zero

B. Maximum

C. Minimum

D. Variable

Ans-: A

Q.6 A material capable of absorbing large amount of energy before fracture is known as

A. Shock proof

B. Strain energy

C. Toughness

D. Hardness

Ans-: C

Q.7 The Yield point in static loading in comparison to yield point in fatigue loading is __.

A. Lower

B. Higher

C. Half

D. Twice

Ans-: A

Q.8 The distance between the centres of two consecutive rivets in the same row is called ____.

A. Lap

B. Lead

C. Pitch

D. Spacing

Ans-: C

Q.9 All stresses , shearing, bearing and tensile in riveted boiler joints are based on the size of __.

A. Drilled or reamed hole

B. Rivet

C. Rivet and hole

D. Hole 

Ans-: A

Q.10 M^1L^-1T^-2 is the dimension of _____.

A. Stress

B. Strain

C. Young's modulus

D. Ultimate strength

Ans-: C

STRENGTH OF MATERIAL MCQ-04

Q.1 The value of poisson's ratio for cast iron is __.

A. 0.25 to 0.45

B. 0.23 to 0.27

C. 0.15 to 0.25

D. 1.05 to 2.00

Ans-: B

Q.2 Which of the following have the poisson's ratio more than unity ?

A. Aluminum

B. Wrought iron

C. Steel

D. None of the above

Ans-: D

Q.3 ______ is the phase of plastic or inelastic action.

A. Creep

B. Strain

C. Elongation

D. Fatigue stress

Ans-: A

Q.4 When the cyclic variation to either load or strain is coincident with respect to time then ______ occur.

A. Creep stress

B. Fatigue stress

C. Tensile strength

D. Impact stress

Ans-: B

Q.5  The elasticity of various materials is controlled by it's 

A. Proof stress

B. Tensile stress

C. Stress at elastic limit

D. Ultimate tensile stress

Ans-: C

Q.6 what happened when a material expands freely due to heating , it will develop_____.

A. Tensile stress

B. Ultimate tensile stress

C. Bending

D. No stress

Ans-: D

Q.7 The stress developed in a material at breaking point in extension is called _____.

A. Breaking stress

B. Proof stress

C. Unit stress

D. Tensile strength

Ans:- A

Q.8 In which stress the load at breaking point or neck area .

A. Rupture stress

B. Tensile stress

C. Ultimate stress

D. None of the above

Ans-: A

Q.9  The property of a material which allows it to be drawn into a smaller section is called ?

A. Ductility

B. Malleability

C. Plasticity

D. Elasticity

Ans-: B

Q.10 Modulus of elasticity in shear is sometimes called the _____.

A. Yield point stress

B. Elastic limit

C. Modulus of rigidity

D. Modulus of resilience

Ans-: C