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71.

The moment of a force

A.	Occurs about a point	B.	Measures the capacity to do useful work
C.	Occurs only when bodies are in motion	D.	Measures the ability to produce turning or twisting about an axes
E.	None of the above

72.

The moment of a force is

A.	Equivalent to the sum of the moments acting on a body	B.	Equivalent to the vertical sum of the moments acting on a body
C.	Equivalent to the algebraic sum of the moments acting on a body	D.	Equivalent to the sum of horizontal components of the moments on a body
E.	Equivalent to the sum of horizontal as well as vertical components of the moments on a body

73.

A framed structure is perfect if it contains members equal to

A.	n - 3	B.	n - 2
C.	2n - 1	D.	2n - 2
E.	2n - 3

74.

The units of moment of inertia of an area are

A.	kg - m	B.	kg - m3
C.	kg - m4	D.	(kg - m)2
E.	m4

75.

The moment of inertia of a solid sphere of radius r is

A.	Mr2	B.	1/2 Mr2
C.	1/8 Mr2	D.	2/3 Mr2

76.

The moment of inertia of a thin spherical shell is

A.	Mr2	B.	1/2 Mr2
C.	1/3 Mr2	D.	2/3 Mr2
E.	None of the above

77.

The moment of inertia of a thin ring about an axis perpendicular to plane of ring is

A.	Mr	B.	Mr2
C.	Mr3	D.	1/2 Mr3
E.	1/3 Mr3

78.

The units of moment of inertia are

A.	kg-m2	B.	kg/m2
C.	kg/m	D.	m4
E.	kgm4

79.

The moment of inertia of a hollow circular section whose external diameter is 8 cm and interial diameter is 6 cm about the axis passing through its centre is

A.	33.4 cm4	B.	66.8 cm4
C.	137.5 cm4	D.	275 cm4
E.	550 cm4

80.

Polar moment of inertia is

A.	Same as moment of inertia	B.	Applicable to masses whereas moment of inertia is applicable to area only
C.	The moment of inertia for an area relative to a line or axis perpendicular to the plane of the area	D.	The moment of inertia for an area relative to a line or axis parallel to the centroidal axis
E.	The moment of inertia for an area ralative to a line or axis which is out the plane of area