Related Questions

When a shaft is subjected to combined twisting moment (T) and bending moment (M), then the equivalent twisting moment is equal to
A $$\frac{1}{2}\sqrt {{{\text{M}}^2} + {{\text{T}}^2}} $$
B $$\sqrt {{{\text{M}}^2} + {{\text{T}}^2}} $$
C $$\frac{1}{2}\left( {{\text{M}} + \sqrt {{{\text{M}}^2} + {{\text{T}}^2}} } \right)$$
D $${\text{M}} + \sqrt {{{\text{M}}^2} + {{\text{T}}^2}} $$
If a number of coplanar forces acting at a point be in equilibrium, the sum of clockwise moments must be __________ the sum of anticlockwise moments, about any point.
A Equal to
B Less than
C Greater than
D None of these
Two shafts ‘A’ and ‘B’ under pure torsion are of identical length and identical weight and are made of the same material. The shaft ‘A’ is solid and the shaft ‘B’ is hollow. We can say that
A Shaft B is better than shaft A
B Shaft A is better than shaft B
C Both the shafts are equally good
D None of these
A company owns some land and buildings for which the following details are relevant : Cost of land Taka 50,000; cost of building Taka 100,000, estimated life of building 20 years, estimated residual value of building Taka 2000; estimated residual value of land Taka 50,000. The company uses the straight line depreciation method. Which is the correct annual depreciation charge for this asset?
A Taka 4000
B Taka 4900
C Taka 7400
D Taka 7500
When two shafts of same length, one of which is hollow, transmit equal torques and have equal maximum stress, then they should have equal
A Polar moment of inertia
B Polar modulus
C Diameter
D Angle of twist
A hollow shaft will transmit a __________ torque than a solid shaft of the same mass and same material.
A Smaller
B Greater
C Medium
D None of these
If a shaft made from ductile material is subjected to combined bending and twisting moment, calculations based on which one of the following failure theories will give the most conservative value?
A Maximum principal stress theory
B Maximum shear stress theory
C Maximum strain energy theory
D Maximum distortion energy theory
A hollow sphere and a solid sphere of the same material and equal radii are heated to the same temperature. In this case,
A The cooling rate will be the same for the two spheres and hence the two spheres will have equal temperatures at any instant
B Both the spheres will emit equal amount of radiation per unit time in the beginning
C Both will absorb equal amount of radiation from the surrounding in the beginning
D Both B & C
A young player received a blow to his knee and undergoes a twisting fall, which may result in
A Medial collateral ligament rupture
B Anterior cruciate ligament tear
C Posterior cruciate ligament tear
D Avulsion of intracapsular origin of popliteus
E Lateral meniscus tear
When a shaft is subjected to a twisting moment, every cross-section of the shaft will be under
A Tensile stress
B Compressive stress
C Shear stress
D Bending stress

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