STRENGTH OF MATERIAL MCQ-10

Q.1 The ratio of number of teeth and pitch circle diameter is called ?

A. Diameteral pitch

B. Pitch

C. Addendum

D. Module

Ans-: A

Q.2 The circle passing through the bottom of the teeth of gear is known as ____.

A. Prime circle

B. Base circle

C. Dedendum circle

D. Addendum circle

Ans-: C

Q.3 The transverse section of a helical gear is identical to the ______ gear.

A. Bevel

B. Worm

C. Spur 

D. Helical

Ans-: C

Q.4 The difference between the addendum and dedendum is known as ______.

A. Backless

B. Clearance

C. Flank

D. Module

Ans-: B

Q.5 The path of contact in involute gears is a____.

A. Curved line

B. Circle

C. Cycloidal 

D. Straight line

Ans-: D

Q.6 Bevel gears are used to transmit ____ motion between two shafts .

A. Reciprocating

B. Rotary

C. Straight line

D. None of the above

Ans-: B

Q.7  Which of the following are spring loaded type governor?

A. Hartnell

B. Proel

C. Gravity

D. All of the above

Ans-: A

Q.8 Which of the following is gravity controlled type governor?

A. Hartnell

B. Watt 

C. Pendulum

D. Porter

Ans-: D

Q.9 A cam and follower constitute ____ pair.

A. Lower

B. Higher

C. Kinematic

D. Link

Ans-: B

Q.10 A joint of two elements permitting relative motion is called ?

A. Lower pair

B. Higher pair

C. Kinematic pair

D. None of the above

Ans-: C

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

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