Related Questions

The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the __________ stress.
A Working
B Damaging
C Allowable
D None of these
A fluid is termed as the Newtonion fluid, when the shear stress is __________ the velocity gradient.
A Independent of
B Inversely proportional to
C Directly proportional to
D None of these
If shearing stress in nut is half the tensile stress in a bolt, then nut length should be equal to
A Diameter of bolt
B 0.75 × diameter of bolt
C 1.25 × diameter of bolt
D 1.5 × diameter of bolt
If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of fluid, and suffix ‘I’ and ‘o’ stand for entry and exit conditions, then in a rotary machine whose degree of reaction is unity
A Vi = Vo
B Vt > Vo
C U
D V = Uo
When a body is subjected to two equal and opposite forces, acting tangentially across the resisting section, as a result of which the body tends to shear off across the section, the stress and strain induced is
A Tensile stress, tensile strain
B Compressive stress, compressive strain
C Shear stress, tensile strain
D Shear stress, shear strain
If the shearing stress is zero on two planes, then the angle between the two planes is
A 45°
B 90°
C 135°
D 225°
The potential gradient across the material of low permittivity is than across the material of high permittivity.
A smaller
B greater
C both (A) and (B)
D none of the above
At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be
A minimum
B maximum
C negative value
D could be any value
At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be
A Minimum
B Maximum
C Zero
D Could be any value
A body is subjected to a direct tensile stress (σ) in one plane. The shear stress is maximum at a section inclined at __________ to the normal of the section.
A 45° and 90°
B 45° and 135°
C 60° and 150°
D 30° and 135°

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