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.Management Sciences
Category: Strength of Materials
The total elongation produced in a bar of uniform section hanging vertically downwards due to its own weight is equal to that produced by a weight________________?
A. of same magnitude as that of bar and applied at the lower end
B. half the weight of bar applied at lower end
C. half of the square of weight of bar applied at lower end
D. one-fourth of weight of bar applied at lower end
E. none of the above
Rivets are made of following type of material_________________?
A. tough
B. hard
C. resilient
D. ductile
E. malleable
When it is indicated that a member is elastic, it means that when force is applied, it will________________?
A. not deform
B. be safest
C. stretch
D. not stretch
E. none of the above
The total strain energy stored in a body is termed as__________________?
A. resilience
B. proof resilience
C. modulus of resilience
D. toughness
E. impact energy
The value of Poisson’s ratio for cast iron is_________________?
A. 0.1 to 0.2
B. 0.23 to 0.27
C. 0.25 to 0.33
D. 0.4 to 0.6
E. 3 to 4
If n = number of members andy = number of joints, then for a perfect frame, n =________________?
A. j-2
B. 2j-l
C. 2/-3
C. 3/-2
E. 2/ -4
In a belt drive, the pulley diameter is doubled, the belt tension and pulley width remaining same. The changes required in key will be____________________?
A. increase key length
B. increase key depth
C. increase key width
D. double all the dimensions
E. none of the above
Strain is defined as the ratio of__________________?
A. change in volume to original volume
B. change in length to original length
C. change in cross-sectional area to original cross-sectional area
D. any one of the above
E. none of the above
Rupture stress is________________?
A. breaking stress
B. maximum load/original cross-sectional area
C. load at breaking point/A
D. load at breaking point/neck area
E. maximum stress
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