A. ( /2) t fs
B. ( /2) t fs
C. D2t fs
D. ( /4) fs
Related Mcqs:
- If the strain energy stored per unit volume in a hollow shaft subjected to a pure torque when t attains maximum shear stress fs the ratio of inner diameter to outer diameter, is 17/64 (f /N)s__________________?
A. 1/2
B. 1/3
C. 1/4
D. 1/5 - The ratio of maximum shear stress to average shear stress of a circular beam, is________________?
A. 2/3
B. 3/2
C. 3/4
D. 4/3 - A shaft is subjected to bending moment M and a torque T simultaneously. The ratio of the maximum bending stress to maximum shear stress developed in the shaft, is____________________?
A. M/T
B. T/M
C. 2M/ T
D. 2T/M - The ratio of shear stress and shear strain of an elastic material, is________________?
A. Modulus of Rigidity
B. Shear Modulus
C. Modulus of Elasticity
D. Both A. and B - The maximum magnitude of shear stress due to shear force F on a rectangular section of area A at the neutral axis, is__________________?
A. F/A
B. F/2A
C. 3F/2A
D. 2F/3A - If a solid shaft (diameter 20 cm, length 400 cm, N = 0.8 × 105 N/mm2) when subjected to a twisting moment, produces maximum shear stress of 50 N/mm 2, the angle of twist in radians, is_________________?
A. 0.001
B. 0.002
C. 0.0025
D. 0.003 - The ratio of the length and diameter of a simply supported uniform circular beam which experiences maximum bending stress equal to tensile stress due to same load at its mid span, is___________________?
A. 1/8
B. 1/4
C. 1/2
D. 1/3 - A close coil helical spring of mean diameter D consists of n coils of diameter d. If it carries an axial load W, the energy stored in the spring, is______________?
A. 4WD²n/d4N
B. 4W²Dn/d4N
C. 4W²D3n/d4N
D. 4W²D3n²/d4N - A load of 1960 N is raised at the end of a steel wire. The minimum diameter of the wire so that stress in the wire does not exceed 100 N/mm2 is________________?
A. 4.0 mm
B. 4.5 mm
C. 5.0 mm
D. 5.5 mm - For calculating the permissible stress 0 y /[(1 + a(l/r)²] is the empirical formula, known as__________________?
A. Straight line formula
B. Parabolic formula
C. Perry’s formula
D. Rankine’s formula
