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

TERMINOLOGY OF GEAR TOOTH

 Terminology of gear tooth 

1.Base circle -: It us the circle from which involute form is generated. only the base circle on a gear is fixed and unalterable.

2.pitch circle -: It us an imaginary circle most use-ful in calculations. It my be noted that an infinite number of pitch circle can be chosen,each asso-ciated with its own pressure angle.

3.Module -: It is defined as the length of the pitch circle diameter per tooth. Thus, if pitch circle diameter of gear be D and number of teeth n, then module (m) = D/n .

4.Pitch circle diameter-: It is the diameter of a circle which by pure rolling action would produce the same motion as the toothed gear wheel. this the most important diameter in gears.

5.Circular pitch -: It the arc distance measured around the pitch circle from the flank of one tooth to a similar flank in the next tooth.

6.Clearance -: This is the radial distance from the tip of a tooth to the bottom of a mating tooth space when the teeth are symmetrically engaged.

7. Diameteral pitch -: The diameteral pitch can be defined as the number of teeth per inch of the pitch circle diameter.

8. Addendum -: Addendum is the radial distance from the pitch circle to the tip of the tooth.

9. Dedendum -: This is the radial distance from the pitch circle to the bottom of tooth space.

Dedendum = Addendum + Clearance 

                    = 1 m + 0.157 m. = 1.157 m

10. Blank diameter -: This is the diameter of the blank from which gear is cut . It is equal to pitch circle diameter plus twice the addenda.

11. Tooth thickness -: The tooth thickness is the arc distance measured along the pitch circle from its intercept with one flank to it's intercept with the other flank of the same tooth.

MECHANISM AND MACHINE MCQ-05

Q.1 In the reciprocating engine Mechanism,the number of links and instantaneous centres are

A. 4 , 5

B. 4 , 6

C. 5 , 4

D. 5 , 6

Ans-: B

Q.2 The number of dead centres in a crank driven slider crank Mechanism are ___.

A. 2

B. 5

C. 4

D. Zero

Ans-: A

Q.3 Base circle decide the size of the ____.

A. Crank

B. Cam

C. Gear

D. Screw

Ans-: B

Q.4 Cylindrical cams can be classified as 

A. Circular

B. Tangent

C. Reciprocating

D. None of the above

Ans-: D

Q.5 Throw of a cam is the maximum distance of follower from ____.

A. Pitch circle

B. Root circle

C. Inner circle

D. Base circle

Ans-: D

Q.6 A circle passing through the pitch point with its centre at the centre of cam axis is known as

A. Base circle

B. Root circle

C. Prime circle

D. None of the above

Ans-: C

Q.7 A watt governor could be classified as the __.

A. Pendulum type governor

B. Dead weight type governor

C. Inertia type governor

D. Centrifugal type governor

Ans-: A

Q.8 Which type of lubricant a rope brake dynamometer uses?

A. Water 

B. Oil

C. Grease

D. No lubricant use

Ans-: D

Q.9 Which type of brake is commonly used on the train Biggie's?

A. Hand brake

B. Shoe brake

C. Electric brake

D. Internal expanding

Ans-: B

Q.10 A Porter governor could be classified as

A. Inertia type governor

B. Pendulum type governor

C. Dead weight type governor

D. None of the above

Ans-: C

MECHANISM AND MACHINE MCQ-04

Q.1 A cam Mechanism imparts _____ motion.

A. Reciprocating

B. Rotating

C. Oscillating

D. All of the above

Ans-: D

Q.2 A kinematic chain requires at least

A. 2 link and 2 turning pair

B. 4 link and 3 turning pair

C. 3 link and 4 turning pair

D. 4 link and 4 turning pair

Ans-: D

Q.3 How many links  Hart Mechanism has ?

A. 6 links

B. 5 links

C. 8 links

D. 1 links

Ans-: A

Q.4 A quarternary joint is equivalent to the _____.

A. One binary joint

B. Two binary joint

C. Three binary joint

D. Four binary joint

Ans-: C

Q.5 The frequency of oscillation at moon compared to earth will be ?

A. 5 times more

B. 2.44 times less

C. 4.2 times more

D. Zero

Ans-: B

Q.6 The main disadvantage of the sliding pair is that it is ____.

A. Wear rapidly

B. Bulky

C. Complicated design

D. A+ B

Ans-: D

Q.7 Which of the following has eight links?

A. Hart Mechanisms

B. Pantograph Mechanism

C. Peaucellier Mechanism

D. None of the above

Ans-: C

Q.8 The approximate straight line Mechanism is a

A. Six bar linkage

B. Four bar linkage

C. Eight bar linkage

D. Two bar linkage

Ans-: B

Q.9 Peaucellier's Mechanism is used to produce mathematically exact _______ motion.

A. Straight line motion

B. Circular line motion

C. Rotating motion

D. None of the above

Ans-: A

Q.10 The part of tooth surface which is above the pitch surface is called?

A. Tooth space

B. Face of the tooth

C. Tooth width

D. None of the above

Ans-: B

MECHANISM AND MACHINE MCQ-03

Q.1 The tendency of a body to resist change from rest or motion is known as___.

A. Inertia

B. Mass

C. Volume

D. Energy

Ans-: A

Q.2 When a ship travels in a sea, which of the effect is more dangerous 

A. Pitching

B. Rolling

C. Steering

D. None of the above

Ans-: A

Q.3 A belt transmitting hourse power is generally dependent upon the ____.

A. Speed of pulley

B. Tension on slack side of belt

C. Tension on tight side of belt

D. Radius of pulley

E. All of the above

Ans-: E

Q.4 In an ideal machine, the output as compared to input is ____.

A. More

B. Less

C. Equal

D. Depending on efficiency

Ans-: C

Q.5 Idler pulley is used for applying ____.

A. Stress

B. Force

C. Power

D. Tension

Ans-: D

Q.6 The indicator using Watt mechanism is known as 

A. Thomson indicator

B. Richard indicator

C. Watt indicator

D. None of the above

Ans-: B

Q.7 The power is transmitted in the automobiles from gear box to differential through the ____.

A. Universal joint

B. Bevel joint

C. Hooke's joint

D. Knuckle joint

Ans-: C

Q.8 A typewriter constitutes ___.

A. Machine

B. Structure

C. Joint

D. Mechanism

Ans-: D

Q.9 The module is equal to ( In a gear drive)

A. 1/ circular pitch

B. 1/ diameteral pitch

C. 2/ diameteral pitch

D. Diameteral pitch/ circular pitch

Ans-: B

Q.10 A pantograph is a Mechanism with the ____.

A. Rolling pair

B. Turning pair

C. Lower pair

D. Higher pair

Ans-: C

MECHANISM AND MACHINE MCQ-02

Q.1 The number of links in pantograph Mechanism is ____.

A. 2

B. 3

C.5

D.3

Ans-: D

Q.2 The motion transmitted between the teeth of gears in mesh is ___.

A. Rolling

B. Partly rolling

C. Partly sliding

D. B+C

An-:D

Q.3 In higher pair, the relative motion is combination of sliding and_____.

A. Rotary

B. Turning

C. A+B

D. None of the above

Ans-: B

Q.4 The Hooke's joint consists of _____ .

A. Two forks

B. Three forks

C. Five forks

D. One forks

Ans-: A

Q.5 Ball bearing and roller bearing is the example of _____.

A. Sliding pair

B. Higher pair

C. Rolling pair

D. Lower pair

Ans-: C

Q.6 In gear tooth the radial distance from the pitch circle to the bottom of the tooth space is known as_.

A. Addendum

B. Dedendum

C. Module

D. Pitch circle

Ans-: B

Q.7 In gear tooth the radial distance from the pitch circle to the tip of the tooth is called ?

A. Dedendum

B. Pitch circle

C. Module

D. Addendum

Ans-: D

Q.8 Any combination of gear wheels by means of which motion is transmitted from one shaft to other is known as _____.

A. Gear bus

B. Gear train

C. Gear cycle

D. Gear combination

Ans-: B

Q.9 The length of the pitch circle diameter per tooth is called___.

A. Module

B. Addendum

C. Dedendum

D. Pitch circle

Ans-: A

Q.10 Dedendum is equal to ___.

A. Addendum + clearance

B. Addendum + module

C. Module + pitch circle

D. None of the above

Ans-: A

MECHANISM AND MACHINE

Q.1 Which of the following is the example of lower pairs?

A. Automobile steering gear

B. Shaft revolving in a bearing

C. Straight line motion Mechanisms

D. All of the above

Ans-: D

Q.2 What is the purpose of link?

A. Transmit motion

B. Act as a support

C. Guide other links

D. All of the above

Ans-: D

Q.3 A simple Mechanism has ____ links.

A. 1

B. 4

C. 2

D. 3

Ans-: B

Q.4 Pulley in a belt drive acts as __.

A. Rolling pair

B. Surface pair

C. Sliding pair

D. All off the above

Ans-: A

Q.5 Which of the following is a lower pair?

A. Belt drive

B. Ball and socket

C. Piston and cylinder

D. B+C

Ans-: D

Q.6 A universal joint is an example of___.

A. Rolling pair

B. Higher pair

C. Lower pair

D. Turning pair

Ans-: C

Q.7 Which of the following is a closed pair ?

A. Lower pair

B. Higher pair

C. Turning pair

D. Sliding pair

Ans-: A

Q.8 A joint of two elements permitting relative motion is known as

A. Kinematic pair

B. Lower pair

C. Higher pair

D. Sliding pair

Ans-: A

Q.9 A pair having a point contact or line contact is called ____.

A. Closed pair

B. Higher pair

C. Turning pair

D. None of the above

Ans-: B

Q.10 Unconstrained rigid link in a plane has ____ of freedom.

A. Three degree

B. Two degree

C. Zero degree

D. None of the above

Ans-: A

LINK AND PAIRS

LINK -: Every part of a machine having motion re-lative to some other part is called link. In other words a link is defined as a rigid body having two or more pairing elements which connect it to the other bodies for the purpose of transmitting force or motion.                                                                      In every machine, at least one link either occupies a fixed position . And also carries the machine as a whole along with it during motion. A example of link is bicycle chain silver necklace etc.

PAIRS -:                                                                                   In a machine when two links or elements are contact ecah other ,they form a pair. If the relative motion between them is completely or successfully constrained in a definite direction, then the pair is known as Kinematic pair.

LOWER PAIR-:                                                                     The Lower pairs are those in which two elements have surface contact and relative motion takes place between them, e.g. nut and the screw, the universal joint used to connect two propeller shafts. A lower pair is an ideal joint that constrains contact between a surface in moving body to a corresponding surface in the fixed body.

HIGHER PAIR-:                                                                     The higher pairs have the line or point contact and pair is forced-closed in order to provide completely constrained motion. Two ele-ments held together mechanically from a closed pair and those not held together mechanically from unclosed pair.

KINEMATIC CHAIN

KINEMATIC CHAIN -: A kinematic chain is one in which the number of links are so connected that the relative motion of any point on a link with re-spect to any other point on the other link follows a law.

For a kinematic chain the relationship between number of links L and number of joints J is -

L = 2/3 ( J+2 )

In the above equation, each higher pair is taken equivalent to two lower pairs and an additional link.

MECHANISM

MECHANISM-:                                                                        A mechanism is a device which is designed to transform input forces and movement into a set of output forces and movement.It is formed when one link for kinematic chain is fixed, and the arra-ngement is used for transmitting or transforming motion. 

Mechanisms generally consist of moving compo-nents such as gears and gear trains, belt and the chain drives, cam and follower mechanisms, and linkages.

            Mechanism also consist of friction devices such as brakes and clutches, structural compone-nts such as the frame, bearing lubricants fastene-rs , springs and seals and also consist specialized machine elements such as pins, keys made splines. Each mechanism is termed as inversion of the original kinematic chain. The mechanism obtained in this way may be very different in the appearance and in the purposes for which they are used.

STRENGTH OF MATERIAL MCQ-11

Q.1 Principal plane is one which shear stress is__.

A. One

B. Zero

C. Two

D. Three

Ans-: B

Q.2 The normal stress on the shear plane is ____.

A. Zero

B. Maximum

C. Minimum

D. None of the above

Ans-: A

Q.3 Where bending moment is maximum,what is the value of shear force?

A. One 

B. Two

C. Zero

D. Four

Ans-: C

Q.4 The volumetric strain of cylindrical bar is equal to sum of longitudinal strain and twice of __.

A. Strain

B. Stress

C. Shear stress

D. Diameteral strain

Ans-: D

Q.5 The bending moment at hinge is ___.

A. One

B. Two

C. Three

D. Zero

Ans-: D

Q.6 The rate of change of shear force is equal to

A. Load

B. Stress

C. Shear strain

D. None of the above

Ans-: A

Q.7 The ability of a material to absorb energy in the elastic region when strained is called?

A. Elasticity

B. Malleability

C. Resilience

D. Ductility

Ans-: C

Q.8 The radius of mohr's circle represent tha value of _____ shear stress.

A. Minimum

B. Maximum

C. Constant

D. None of the above

Ans-: B

Q.9 A vertical structural member subjected to the compression is known as___.

A. Strut

B. Beam

C. Cantilever beam

D. Column

Ans-: D

Q.10 A inclined member subjected to compression is Known as____.

A. Column

B. Beam

C. Strut

D. None of the above

Ans-: C

STRENGTH OF MATERIAL MCQ-10

Q.1 How much is infinite life for steel components?

A. One thousand cycles

B. One million cycles

C. One billion cycles

D. Zero cycles

Ans-: B

Q.2 Whta is the bending moment at hinge of beam ?

A. One 

B. Two

C. Zero

D. 1/2

Ans-: C

Q.3 The function of an idler pulley is to _____ tension in the belt.

A. Increase

B. Decrease

C. Constant

D. None of the above

Ans-: A

Q.4 What will be the the bending moment at that section ? Where the shear force is zero along a section.

A. Minimum

B. Zero

C. Maximum

D. Two times

Ans-: C

Q.5 A beam which is supported on more than two supports known as___.

A. Fixed beam

B. Two supports beam

C. Cantilever beam

D. Continuous beam

Ans-: D

Q.6 A ______ is one in which the ends are rigidly fixed in a horizontal position.

A. Fixed beam

B. Continuous beam

C. Cantilever beam

D. None of the above

Ans-: A

Q.7 The line to which longitudinal axis of a beam bends under a given load is called?

A. Bending line

B. Plastic line

C. Elastic line

D. Fatigue line

Ans-: C

Q.8 In the designing of clutch what criteria is adopted from safety consideration?

A. Uniform design

B. Low coast material

C. Uniform wear

D. Uniform tear

Ans-: C

Q.9 What is the ratio of maximum shear stress to average shear stress in a beam of rectangular section?

A. 1:2

B. 1:5

C. 2:3

D. 1:4

Ans-: B

Q.10 Solderberg equation is based on the __.

A. Tensile strength of material

B. Compressive stress of material

C. Ultimate strength of material

D. Yield Strength of material

Ans-: D

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

STRENGTH OF MATERIAL MCQ-:03

Q.1 The unit of Young's modulus is ____.

A. Kg

B. Kg/cm

C. Kg/cm^2

D. Kg/cm^3

Ans-: C

Q.2 Isotropic material have _____ properties in all directions .

A. Different elastic properties

B. Same elastic properties

C. No elastic properties

D. Various elastic properties

Ans-: B

Q.3 The maximum energy stored at elastic limit, is known as ______.

A. Resilience

B. Creep

C. Stress

D. Proof resilience

Ans-: D

Q.4 The proof resilience per unit volume is known as ______.

A. Modulus of resilience

B. Resilience

C. Flow of metal

D. Resilience limit

Ans-: A

Q.5  which of the following are is a graphical representation of the stress in an element subjected to general two dimension stress system.

A. Flow chart diagrams

B. Mohr's circle diagram

C. A+B

D. None of the above

Ans-: B

Q.6 The ultimate tensile stress of mild steel compared to ultimate compressive stress is ____.

A. Same

B. Less

C. More 

D. Variable

Ans-: C

Q.7 The intensity of stress which causes unit strain is called ____.

A. Bulk modulus

B. Modulus of elasticity

C. Unit stress

D. Total stress

Ans-: B

Q.8 The unit of strain is ?

A. N/m

B. Kg/m

C. N/m^2

D. No unit 

Ans-: D

Q.9  Which type of strength of a material is an index of its toughness?

A. Tensile strength

B. Impact strength

C. Ultimate strength

D. Unit strength

Ans-: B

Q.10 The poisson's ratio for steel is between __.

A. 0.25 to 0.33

B. 0.25 to 0.45

C. 0.05 to 0.1

D. 1.5 to 2.5

Ans-: A