Engineering Mechanics

Question: According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through centre of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)
[A].

IP = IG + Ah2

[B].

IP = IG – Ah2

[C].

IP = IG / Ah2

[D].

IP = Ah2 / IG

Answer: Option A

Explanation:

No answer description available for this question.

Question: Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.
[A].

nine times

[B].

six times

[C].

four times

[D].

two times

Answer: Option A

Explanation:

No answer description available for this question.

Question: Moment of inertia of a triangular section of base (b) and height (h) about an axis through its base, is
[A].

bh3/4

[B].

bh3/8

[C].

bh3/ 12

[D].

bh3/ 36

Answer: Option C

Explanation:

No answer description available for this question.

Question: Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its C.G. and parallel to the base, is
[A].

bh3/4

[B].

bh3/8

[C].

bh3/12

[D].

bh3/36

Answer: Option D

Explanation:

No answer description available for this question.

Question: Moment of inertia of a hollow circular section, as shown in the below figure about an axis perpendicular to the section, is __________ than that about X-X axis.
[A].

two times

[B].

same

[C].

half

Answer: Option A

Explanation:

No answer description available for this question.

Question: Moment of inertia of a hollow circular section, as shown in the below figure about X-axis, is
[A].

[B].

[C].

[D].

Answer: Option D

Explanation:

No answer description available for this question.

Question: Moment of inertia of a circular section about an axis perpendicular to the section is
[A].

πd3/16

[B].

πd3/32

[C].

πd4/32

[D].

πd4/64

Answer: Option C

Explanation:

No answer description available for this question.

Question: Moment of inertia of a circular section about its diameter (d) is
[A].

πd3/16

[B].

πd3/32

[C].

πd4/32

[D].

πd4/64

Answer: Option D

Explanation:

No answer description available for this question.

Question: Moment of inertia of a hollow rectangular section as shown in the below figure about Y-Y axis, is not the same as that about X-X axis.
[A].

Yes

[B].

No

Answer: Option A

Explanation:

No answer description available for this question.

Question: Moment of inertia of a hollow rectangular section as shown in the below figure about X-X axis, is
[A].

[B].

[C].

[D].

Answer: Option A

Explanation:

No answer description available for this question.