Fundamentals of Machine Design (3141907) MCQs

MCQs of Moment of inertia of planar cross -sections

Showing 1 to 10 out of 20 Questions
1.
The point, through which the whole weight of the body acts, irrespective of its position, is known as
(a) moment of inertia
(b) center of gravity
(c) center of percussion
(d) center of mass
Answer:

Option (b)

2.
The center of the area of plane figures (like a triangle, quadrilateral, circle, etc.) has only areas, but no mass figures are known as centroid.
(a) True
(b) False
Answer:

Option (a)

3.
A body is having more than one center of gravity for all positions of the body.
(a) Correct
(b) Incorrect
Answer:

Option (b)

4.
The center of gravity of a body is always calculated with reference to some assumed axis known
(a) plane of reference
(b) point of reference
(c) axis of reference
(d) none of these
Answer:

Option (c)

5.

The unit of moment of inertia of an area is

(a)

kg-m2

(b)

kg-m-s2

(c)

kg/m2

(d)

m4

Answer:

Option (d)

6.

If the area of a section is in mm2 and the distance of the center of the area from a line is in mm, then units of the moment of inertia of the section about the line are expressed in

(a)

mm2

(b)

mm3

(c)

mm4

(d)

mm5

Answer:

Option (c)

7.
Theorem of perpendicular axis is used in obtaining the moment of inertia of a
(a) triangular lamina
(b) square lamina
(c) circular lamina
(d) semicircular lamina
Answer:

Option (b)

8.
The center of gravity of a triangle lies at a point where its medians intersect each other.
(a) True
(b) False
Answer:

Option (a)

9.
The center of gravity of a rectangle lies at a point where its two diagonals meet each other.
(a) Agree
(b) Disagree
Answer:

Option (a)

10.
The center of gravity of a right-angled triangle lies at its geometrical center.
(a) Correct
(b) Incorrect
Answer:

Option (b)

Showing 1 to 10 out of 20 Questions