62) The ratio of elongation in a prismatic bar due to its own weight (W) as compared to another similar bar carrying an additional weight (W) will be

1:2

1:3

1:44

1:2.5

Answer is:

1:3

Engineering Materials MCQ with Answers

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

equal

proportional to their respective moduli of elasticity

inversely proportional to their moduli of elasticity

average of the sum of moduli of elasticity

Answer is:

proportional to their respective moduli of elasticity

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

size of rivet

size of the drilled or reamed hole

average of size of rivet and hole

smaller of the two

Answer is:

size of the drilled or reamed hole

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

pitch

back pitch

diagonal pitch

diametrical pitch

Answer is:

diagonal pitch

66) Efficiency of a riveted joint is the ratio of its strength (max. load it can resist without failure) to the strength of the un-punched plate in

tension

compression

bearing

any one of the above

Answer is:

tension

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62) The ratio of elongation in a prismatic bar due to its own weight (W) as compared to another similar bar carrying an additional weight (W) will be

1:3

Engineering Materials MCQ with Answers

Related Engineering Materials MCQ with Answers

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

proportional to their respective moduli of elasticity

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

size of the drilled or reamed hole

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

diagonal pitch

66) Efficiency of a riveted joint is the ratio of its strength (max. load it can resist without failure) to the strength of the un-punched plate in

tension

Engineering Materials MCQ with Answers