Stress and Strain Short Questions and Answers

Questions

41 A cylindrical section having no joint is known as

A jointless section

B homogeneous section

C perfect section

D seamless section

View Answer

Answer: seamless section

42 A beam is loaded as cantilever. If the load at the end is increased, the failure will occur

A in the middle

B at the tip below the load

C at the support

D anywhere

View Answer

Answer: anywhere

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43 A non-yielding support implies that the

A support is frictionless

B support can take any amount of reaction

C support holds member firmly

D slope of the beam at the support is zero

View Answer

Answer: slope of the beam at the support is zero

44 In a prismatic member made of two materials so joined that they deform equally under axial stress, the unit stresses in two materials are

A equal

B proportional to their respective moduli of elasticity

C inversely proportional to their moduli of elasticity

D average of the sum of moduli of elas-ticity

View Answer

Answer: proportional to their respective moduli of elasticity

45 In riveted boiler joints, all stresses, shearing, bearing and tensile are based on the

A size of rivet

B size of the drilled or reamed hole

C average of size of rivet and hole

D smaller of the two

View Answer

Answer: size of the drilled or reamed hole

46 The distance between the centres of the rivets in adjacent rows of zig-zag riveted joint is known as

A pitch

B back pitch

C diagonal pitch

D diametral pitch

View Answer

Answer: diagonal pitch

47 When two plates are butt together and riveted with cover plates with two rows of rivets, the joi;it is known as

A lap point

B butt joint

C single riveted single cover butt joint

D double riveted double cover butt joint

View Answer

Answer: double riveted double cover butt joint

48 The deformation of a bar under its own weight compared to the deformation of same body subjected to a direct load equal to weight of the body is

A same

B double

C half

D four times

View Answer

Answer: half

49 Hooke's law holds good up to

A yield point

B limit of proportionality

C breaking point

D elastic limit

View Answer

Answer: limit of proportionality

50 The unit of Young's modulus is

A mm/mm

B kg/cm

C kg

D kg/cm2

View Answer

Answer: kg/cm2

51 It equal and opposite forces applied to a body tend to elongate it, the stress so produced is called

A internal resistanpe

B tensile stress

C transverse stress

D compressive stress

View Answer

Answer: tensile stress

52 If the radius of wire stretched by a load is doubled, then its Young's modulus will be

A doubled

B halved

C become four times

D remain unaffected

View Answer

Answer: remain unaffected

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