Strength Of Materials MCQs

Option A: W between P and F

Option B: F between W and P

Option C: P between W and F

Option D: W, P and F all on one side

Correct Answer: P between W and F ✔

Option A: Breaking stress

Option B: Fracture stress

Option C: Yield point stress

Option D: Proof stress

Correct Answer: Breaking stress ✔

Option A: yield point

Option B: limit of proportionality

Option C: breaking point

Option D: elastic limit

Correct Answer: limit of proportionality ✔

Option A: mm/mm

Option B: kg/cm

Option C: kg

Option D: kg/cm2

Correct Answer: kg/cm ✔

Option A: internal resistanpe

Option B: tensile stress

Option C: transverse stress

Option D: compressive stress

Correct Answer: tensile stress ✔

Option A: longitudinal stress and longitudinal strain

Option B: volumetric stress and volumetric strain

Option C: lateral stress and lateral strain

Option D: shear stress and shear strain

Correct Answer: shear stress and shear strain ✔

Option A: same

Option B: more

Option C: less

Option D: more or less depending on other factors

Correct Answer: more ✔

Option A: uniform throughout

Option B: increase uniformly

Option C: first increase and then decrease

Option D: increase uniformly first and then increase rapidly

Correct Answer: increase uniformly ✔

Option A: doubled

Option B: halved

Option C: become four times

Option D: become one-fourth

Correct Answer: remain unaffected ✔

Option A: area at the time of fracture

Option B: original cross-sectional area

Option C: average of A. and B.

Option D: minimum area after fracture

Correct Answer: original cross-sectional area ✔

Option A: half

Option B: same amount

Option C: double

Option D: one-fourth

Correct Answer: same amount ✔

Option A: unit stress

Option B: bulk modulus

Option C: modulus of rigidity

Option D: modulus of elasticity

Correct Answer: modulus of elasticity ✔

Option A: 4 tonnes/cm2

Option B: 8 tonnes/cm2

Option C: 16 tonnes/cm2

Option D: 22 tonnes/cm2

Correct Answer: 8 tonnes/cm2 ✔

Option A: kinematic viscosity

Option B: surface tension

Option C: bulk modulus

Option D: strain

Correct Answer: strain ✔

Option A: more

Option B: less

Option C: same

Option D: more/less depending on composition

Correct Answer: less ✔

Option A: rubber

Option B: plastic

Option C: brass

Option D: steel

Correct Answer: steel ✔

Option A: 0.01 to 0.1

Option B: 0.23 to 0.27

Option C: 0.25 to 0.33

Option D: 0.4 to 0.6

Correct Answer: 0.25 to 0.33 ✔

Option A: of same magnitude as that of bar and applied at the lower end

Option B: half the weight of bar applied at lower end

Option C: half of the square of weight of bar applied at lower end

Option D: one-fourth of weight of bar applied at lower end

Correct Answer: half the weight of bar applied at lower end ✔

Option A: homogeneous

Option B: inelastic

Option C: isotropic

Option D: isentropic

Correct Answer: isotropic ✔

Option A: plasticity

Option B: ductility

Option C: elasticity

Option D: malleability

Correct Answer: ductility ✔

Option A: steel

Option B: copper

Option C: aluminium

Option D: cast iron

Correct Answer: none of the above ✔

Option A: increase

Option B: decrease

Option C: remain same

Option D: increase initially and then decrease

Correct Answer: decrease ✔

Option A: thermal stresses

Option B: tensile stress

Option C: bending

Option D: compressive stress

Correct Answer: no stress ✔

Option A: considerably greater than that necessary to continue it

Option B: considerably lesser than that necessary to continue it

Option C: greater than that necessary to stop it

Option D: lesser than that necessary to stop it

Correct Answer: considerably greater than that necessary to continue it ✔

Option A: breaking stress

Option B: fracture stress

Option C: yield point stress

Option D: ultimate tensile stress

Correct Answer: breaking stress ✔

Option A: ultimate tensile stress

Option B: proof stress

Option C: stress at yield point

Option D: stress at elastic limit

Correct Answer: stress at elastic limit ✔

Option A: Young’s modulus

Option B: bulk modulus

Option C: modulus of rigidity

Option D: modulus of elasticity

Correct Answer: bulk modulus ✔

Option A: same in both cases

Option B: zero in first case

Option C: different in both cases

Option D: data are not sufficient to determine same

Correct Answer: zero in first case ✔

Option A: not deform

Option B: be safest

Option C: stretch

Option D: not stretch

Correct Answer: stretch ✔

Option A: frequent heat treatment

Option B: fatigue

Option C: creep

Option D: shock loading

Correct Answer: shock loading ✔

Option A: resilience

Option B: proof resilience

Option C: modulus of resilience

Option D: toughness

Correct Answer: resilience ✔

Option A: ductility

Option B: toughness

Option C: resilience

Option D: shock proof

Correct Answer: toughness ✔

Option A: same

Option B: half

Option C: two times

Option D: four times

Correct Answer: two times ✔

Option A: in the middle

Option B: at the tip below the load

Option C: at the support

Option D: anywhere

Correct Answer: anywhere ✔

Option A: 1:2

Option B: 1 : 3

Option C: 1 : 4

Option D: 1 : 2.5

Correct Answer: 1 : 3 ✔

Option A: size of rivet

Option B: size of the drilled or reamed hole

Option C: average of size of rivet and hole

Option D: smaller of the two

Correct Answer: size of the drilled or reamed hole ✔

Option A: tension

Option B: compression

Option C: bearing

Option D: any one of the above

Correct Answer: tension ✔

Option A: chain riveted joint

Option B: diamond riveted joint

Option C: criss-cross riveted joint

Option D: zig-zag riveted joint

Correct Answer: chain riveted joint ✔

Option A: chain riveting

Option B: zig zag riveting

Option C: diamond riveting

Option D: criss-cross riveting

Correct Answer: diamond riveting ✔

Option A: tough

Option B: hard

Option C: resilient

Option D: ductile

Correct Answer: ductile ✔

Option A: same

Option B: double

Option C: half

Option D: four times

Correct Answer: half ✔

Option A: 30 MN/m2

Option B: 50 MN/m2

Option C: 100 MN/m2

Option D: 200 MN/m2

Correct Answer: 100 MN/m2 ✔

Option A: equal to the hoop stress

Option B: twice the hoop stress

Option C: half of the hoop stress

Option D: one-fourth of hoop stress

Correct Answer: half of the hoop stress ✔

Option A: maximum torque it can transmit

Option B: number of cycles it undergoes before failure

Option C: elastic limit up to which it resists torsion, shear and bending stresses

Option D: torque required to produce a twist of one radian per unit length of shaft

Correct Answer: torque required to produce a twist of one radian per unit length of shaft ✔

Option A: bearing stresses

Option B: fatigue stresses

Option C: crushing stresses

Option D: resultant stresses

Correct Answer: bearing stresses ✔

Option A: maximum at periphery and zero at center

Option B: maximum at center

Option C: uniform throughout

Option D: average value in center

Correct Answer: none of the above ✔

Option A: 0°

Option B: 30°

Option C: 45°

Option D: 60°

Correct Answer: 45° ✔

Option A: bodies having relative motion

Option B: two dry surfaces

Option C: two lubricated surfaces

Option D: solids and liquids

Correct Answer: bodies having relative motion ✔

Option A: Wtan(a + )

Option B: Wtan(a-)

Option C: Wcos(a + )

Option D: Wsin(a + )

Correct Answer: Wtan(a + ) ✔

Option A: r/2

Option B: r/A

Option C: r/%

Option D: 0.134 r

Correct Answer: 0.134 r ✔

Option A: balance each other

Option B: cannot balance each other

Option C: produce moment of a couple

Option D: are equivalent

Correct Answer: balance each other ✔

Option A: limiting friction

Option B: sliding friction

Option C: rolling friction

Option D: kinematic friction

Correct Answer: limiting friction ✔

Option A: coplanar

Option B: meet at one point ;

Option C: both A. and B. above

Option D: all be equal

Correct Answer: C. both A. and B. above ✔

Option A: j-2

Option B: 2j-l

Option C: 2/-3

Option D: 3/-2

Correct Answer: 2/-3 ✔

Option A: 25

Option B: 50

Option C: 100

Option D: 250

Correct Answer: 50 ✔

Option A: at distance — from the plane base 3r

Option B: at distance — from the plane base 3r

Option C: at distance — from the plane base 3r

Option D: at distance — from the plane base or

Correct Answer: at distance — from the plane base or ✔

Option A: h/2

Option B: J/3

Option C: h/6

Option D: h/4

Correct Answer: h/4 ✔

Option A: arm of man

Option B: pair of scissors

Option C: pair of clinical tongs

Option D: all of the above

Correct Answer: all of the above ✔

Option A: straight line

Option B: parabola

Option C: hyperbola

Option D: elliptical

Correct Answer: parabola ✔

Option A: mechanical advantage is greater than velocity ratio

Option B: mechanical advantage is equal to velocity ratio

Option C: mechanical advantage is less than velocity ratio

Option D: mechanical advantage is unity

Correct Answer: mechanical advantage is less than velocity ratio ✔

Option A: 38 m

Option B: 62.5 m

Option C: 96 m

Option D: 124 m

Correct Answer: 62.5 m ✔

Option A: friction

Option B: limiting friction

Option C: repose

Option D: kinematic friction

Correct Answer: repose ✔

Option A: same

Option B: double

Option C: half

Option D: four times

Correct Answer: double ✔

Option A: right angled triangle

Option B: equilateral triangle

Option C: square

Option D: circle

Correct Answer: right angled triangle ✔

Option A: density of metal can’t be determined

Option B: metal is twice as dense as water

Option C: metal will float in water

Option D: metal is twice as dense as unknown fluid

Correct Answer: density of metal can’t be determined ✔

Option A: ellipse

Option B: hyperbola

Option C: parabola

Option D: circle

Correct Answer: hyperbola ✔

Option A: nature of surfaces

Option B: area of contact

Option C: shape of the surfaces

Option D: ail of the above.

Correct Answer: nature of surfaces ✔

Option A: meet in a point

Option B: be all parallel

Option C: at least two of them must meet

Option D: all the above are correct

Correct Answer: all the above are correct ✔

Option A: equal to the moment of the couple

Option B: constant

Option C: both of above are correct

Option D: both of above are wrong

Correct Answer: equal to the moment of the couple ✔

Option A: same

Option B: more

Option C: less

Option D: may be less of more depending on nature of surfaces and velocity

Correct Answer: less ✔

Option A: more inclined when moving

Option B: less inclined when moving

Option C: more inclined when standing

Option D: less inclined when standing

Correct Answer: less inclined when standing ✔

Option A: increase key length

Option B: increase key depth

Option C: increase key width

Option D: double all the dimensions

Correct Answer: increase key width ✔

Option A: from maximum at the center to zero at the circumference

Option B: from zero at the center to maximum at the circumference

Option C: from maximum at the center to mini-mum at the cricumference

Option D: from minimum at the centro to maxi-mum at the circumference

Correct Answer: from zero at the center to maximum at the circumference ✔

Option A: maximum calculated value

Option B: minimum calculated value

Option C: mean value

Option D: extreme value

Correct Answer: minimum calculated value ✔

Option A: jointless section

Option B: homogeneous section

Option C: perfect section

Option D: manufactured section

Correct Answer: seamless section ✔

Option A: longitudinal stress

Option B: hoop stress

Option C: yeiled stress

Option D: ultimate stress

Correct Answer: hoop stress ✔

Option A: the first row

Option B: the second row

Option C: the central row

Option D: one rivet hole of the end row

Correct Answer: one rivet hole of the end row ✔

Option A: butt joint

Option B: lap joint

Option C: double riveted lap joints

Option D: all types of joints

Correct Answer: butt joint ✔

Option A: chain riveted joint

Option B: diamond riveted joint

Option C: criss-cross riveted joint

Option D: zig-zag riveted joint

Correct Answer: diamond riveted joint ✔

Option A: lap point

Option B: butt joint

Option C: single riveted single cover butt joint

Option D: double riveted double cover butt joint

Correct Answer: butt joint ✔

Option A: pitch

Option B: back pitch

Option C: diagonal pitch

Option D: diametral pitch

Correct Answer: pitch ✔

Option A: equal

Option B: proportional to their respective moduli of elasticity

Option C: inversely proportional to their moduli of elasticity

Option D: average of the sum of moduli of elas-ticity

Correct Answer: proportional to their respective moduli of elasticity ✔

Option A: support is frictionless

Option B: support can take any amount of reaction

Option C: support holds member firmly

Option D: slope of the beam at the support is zero

Correct Answer: slope of the beam at the support is zero ✔

Option A: same

Option B: twice

Option C: four times

Option D: eight times

Correct Answer: four times ✔

Option A: resilience

Option B: proof resilience

Option C: modulus of resilience

Option D: toughness

Correct Answer: resilience ✔

Option A: impact energy

Option B: resilience

Option C: proof resilience

Option D: modulus of resilience

Correct Answer: resilience ✔

Option A: strain energy

Option B: resilience

Option C: proof resilience

Option D: modulus of resilience

Correct Answer: strain energy ✔

Option A: 0.1 to 0.2

Option B: 0.23 to 0.27

Option C: 0.25 to 0.33

Option D: 0.4 to 0.6

Correct Answer: 0.23 to 0.27 ✔

Option A: fluids in motion

Option B: breaking point

Option C: plastic deformation of solids

Option D: rupture stress

Correct Answer: plastic deformation of solids ✔

Option A: elastic point of the material

Option B: plastic point of the material

Option C: breaking point of the material

Option D: yielding point of the material

Correct Answer: yielding point of the material ✔

Option A: Young’s modulus

Option B: bulk modulus

Option C: modulus of rigidity

Option D: modulus of elasticity

Correct Answer: Poisson’s ratio ✔

Option A: breaking stress

Option B: maximum load/original cross-sectional area

Option C: load at breaking point/A

Option D: load at breaking point/neck area

Correct Answer: load at breaking point/neck area ✔

Option A: creeping

Option B: yielding

Option C: breaking

Option D: plasticity

Correct Answer: creeping ✔

Option A: tensile strain increases more quickly

Option B: tensile strain decreases more quickly

Option C: tensile strain increases in proportion to the stress

Option D: tensile strain decreases in proportion to the stress

Correct Answer: tensile strain increases more quickly ✔

Option A: more than 50%

Option B: 25—50%

Option C: 10—25%

Option D: 5—10%

Correct Answer: negligible ✔

Option A: malleability

Option B: ductility

Option C: plasticity

Option D: elasticity

Correct Answer: malleability ✔

Option A: longitudinal stress and longitudinal strain

Option B: longitudinal stress and lateral stress

Option C: lateral stress and longitudinal stress

Option D: lateral stress and lateral strain

Correct Answer: lateral stress and longitudinal stress ✔

Option A: plasticity

Option B: elasticity

Option C: ductility

Option D: malleability

Correct Answer: elasticity ✔

Option A: slenderness ratio and area of cross-section

Option B: Poisson’s ratio and modulus of elasticity

Option C: slenderness ratio and modulus of elasticity

Option D: slenderness ratio, area of cross-section and modulus of elasticity

Correct Answer: slenderness ratio, area of cross-section and modulus of elasticity ✔

Option A: 2.1xl05 kg/cm2

Option B: 2.1 X 106 kg/cm2

Option C: 2.1 x 107 kg/cm2

Option D: 0.1 xlO6 kg/cm2 (<?) 3.8 x 106 kg/cm2

Correct Answer: 2.1 X 106 kg/cm2 ✔