91. Vectors method for the resultant force is also called polygon law of forces.
Correct
Incorrect
✅ The correct answer is option A.
Engineering Mechanics MCQs
92. 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.)
IP = IG + Ah2
IP = IG – Ah2
IP = IG / Ah2
IP = Ah2 / IG
✅ The correct answer is option A.
93. When a particle moves along a straight path, there will be centripetal acceleration as well as tangential acceleration.
Correct
Incorrect
✅ The correct answer is option B.
94. The slope on the road surface generally provided on the curves is known as
angle of friction
angle of repose
angle of banking
none of these
✅ The correct answer is option C.
95. The acceleration of a particle moving with simple harmonic motion is proportional to the displacement of the particle from the mean position.
TRUE
FALSE
✅ The correct answer is option A.
96. Moment of inertia is the
second moment of force
second moment of area
second moment of mass
all of these
✅ The correct answer is option D.
97. The acceleration of a body sliding down an inclined surface is
g sin θ
g cos θ
g tan θ
none of these
✅ The correct answer is option A.
98. The rate of change of displacement of a body is called
velocity
acceleration
momentum
none of these
✅ The correct answer is option A.
99. The moment of inertia of a square of side (a) about an axis through its centre of gravity is
a4/4
a4/8
a4/12
a4/36
✅ The correct answer is option C.
100. The moment of inertia of a solid cylinder of mass m, radius r and length l about the longitudinal axis or polar axis is
mr2/2
mr2/4
mr2/6
mr2/8
✅ The correct answer is option A.