The polar moment of inertia of a solid circular shaft of diameter (D) is

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Question
The polar moment of inertia of a solid circular shaft of diameter (D) is
Options
A.
B.
C.
D.

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1. The product of the tangential force acting on the shaft and its distance from the axis of the shaft (i.e. radius of shaft) is known as
Options
A. bending moment
B. twisting moment
C. torsional rigidity
D. flexural rigidity

3. A rod is enclosed centrally in a tube and the assembly is tightened by rigid washers. If the assembly is subjected to a compressive load, then
Options
A. rod is under compression
B. tube is under compression
C. both rod and tube are under compression
D. tube is under tension and rod is under compression

4. Which of the following statement is correct?
Options
A. A continuous beam has only two supports at the ends.
B. A uniformly distributed load spreads uniformly over the whole length of a beam.
C. The bending moment is maximum where shear force is maximum.
D. The maximum bending moment of a simply supported beam of length l with a central point load W is Wl/8.

6. In a beam subjected to pure bending, the intensity of stress in any fibre is __________ the distance of the fibre from the neutral axis.
Options
A. equal to
B. less than
C. more than
D. directly proportional to

9. Two shafts 'A' and 'B' have the same material. The shaft 'A' is solid of diameter 100 mm. The shaft 'B' is hollow with outer diameter 100 mm and inner diameter 50 mm. The torque transmitted by shaft 'B' is __________ as that of shaft 'A'.
Options
A. 1/6
B. 1/8
C. 1/4
D. 15/16

10. At the neutral axis of a beam
Options
A. the layers are subjected to maximum bending stress
B. the layers are subjected to minimum bending stress
C. the layers are subjected to compression
D. the layers do not undergo any strain

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