| Let the strains produced in length and diameter of the cylindrical rod be α and β respectively. Then the volumetric strain is given by |
A) α + 2β
B) α + β
C) α − β
D) α − 2β
| If a shaft is simultaneously subjected to torque T/2 and a bending moment of 2M, then the ratio of maximum bending stress to maximum shear stress will be |
A) 4M/T
B) 8M/T
C) 4T/M
D) 8T/M
| The sum of normal stress in a compound stress system is |
A) constant
B) variable linearly
C) variable parabolically
D) none of the above
| A shaft is subjected to a bending moment M and a torque T. The equivalent bending moment Me on the shaft is given by |
A) [M + √(M2 + T2)] / 2
B) [M + √(M2 + T2)] / 4
C) [M2 + √(M + T)] / 2
D) [M – √(M + T)] / 2
| In combined stress theory, kern of a section is that area of the cross-section whereupon loading there will be no tension anywhere in the cross-section. So, the kern of an I-section is |
A) Rectangular in shape
B) Square in shape
C) Circular in shape
D) Rhombus in shape
