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.Management Sciences
Category: Strength of Materials
If a part is constrained to move and heated, it will develop ____________________?
A. principal stress
B. tensile stress
C. compressive stress
D. shear stress
E. no stress
The value of modulus of elasticity for mild steel is of the order of________________?
A. 2.1xl05 kg/cm2
B. 2.1 X 106 kg/cm2
C. 2.1 x 107 kg/cm2
D. 0.1 xlO6 kg/cm2 (<?) 3.8 x 106 kg/cm2
In the lever of third order, load W, effort P and fulcrum F are oriented as follows_________________?
A. W between P and F
B. F between W and P
C. P between W and F
D. W, P and F all on one side
E. none of the above
If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either___________________?
A. meet in a point
B. be all parallel
C. at least two of them must meet
D. all the above are correct
E. none of the above
The ultimate tensile stress of mild steel compared to ultimate compressive stress is__________________?
A. same
B. more
C. less
D. more or less depending on other factors
E. unpredictable
Efficiency of a riveted joint is the ratio of its strength (max. load it can resist without failure) to the strength of the unpunched plate in_________________?
A. tension
B. compression
C. bearing
D. any one of the above
E. none of the above
The force acting along the circumference will cause stress in the walls in a direction normal to the longitudinal axis of cylinder; this stress is called___________________?
A. longitudinal stress
B. hoop stress
C. yeiled stress
D. ultimate stress
E. none of the above
The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of __________________?
A. friction
B. limiting friction
C. repose
D. kinematic friction
E. static friction
The property of a material which allows it to be drawn into a smaller section is called________________?
A. plasticity
B. ductility
C. elasticity
D. malleability
E. drawabihty
Percentage reduction of area in performing tensile test on cast iron may be of the order of__________________?
A. 50%
B. 25%
C. 0%
D. 15%
E. 60%.
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