A. 0
B. 1
C. 1/2
D. 1/3
Related Mcqs:
- According to maximum shear stress failure criterion, yielding in material occurs, when the maximum shear stress is equal to _______________ times the yield stress ?
A. 0.5
B. 2
C. √2
D. √3/2 - Factor of safety in machine design is defined as the ratio of ultimate stress to _____________ stress ?
A. Working
B. Bearing
C. Yield
D. None of these - In Newton’s law of viscosity, which states that the shear stress is proportional to the _____________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, Vg = velocity gradient) ?
A. V2
B. 1/V2
C. 1/Vg
D. Vg - A fluid is termed as the Newtonian fluid, when the shear stress is _________________ the velocity gradient ?
A. Independent of
B. Inversely proportional to
C. Directly proportional to
D. None of these - Which of the following relationships is correct for relating the three elastic constants of an isotropic elastic material (where, E = Young’s modulus, G = Modulus of rigidity or shear modulus v = Poisson’s ratio) ?
A. E = 2G (1 + v)
B. E = G (1 + v)
C. E = G (1 + v)/2
D. E = 2G (1 + 2v) - The maximum stress below which a material can withstand an infinite number of cycle of stress, is termed as the________________?
A. Fatigue strength
B. Creep strength
C. Resilience
D. Endurance limit - In case of compression of one kg of air, the work done will be the least, when the value of polytropic index ‘n’ is______________________?
A. 1
B. 1.4
C. 1.5
D. Y = Cp/Cv - Square steel key is normally strong in failure by shear & crushing. Keys are normally made of _______________ steel bars?
A. Hot rolled mild
B. Cold rolled mild
C. Forged
D. Machinable stainless - Ultimate strength in tension as compared to that in shear for steel is____________________?
A. Half
B. One third
C. One and half times
D. One fourth - The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron ?
A. 159
B. 1837
C. 2537
D. 10000
