MCQ
25901. A framed structure is imperfect, if the number of members are ---(2j-3).
equal to
less than
greater than
either b or c
25902. The moment of inertia of a square of side a about an axis through its centre of gravity is-
a^4 /4
a^4 /8
a^4 /12
a^4 /36
25903. A redundant frame is also called- frame.
imperfect
deficient
perfect
25904. A force acting in the opposite direction to the motion of the body is called force of friction.
Agree
Disagree
25905. The force, by which the body is attracted towards the center of the earth, is called-
impulsive force
momentum
weight
mass
25906. Moment of inertia of a circular section about an axis perpendicular to the section is-
Izz = Ixx + Iyy = πd^2 /32
πd³/16
πd³/32
πd^4/64
πd^4/32
25907. The coefficient of restitution for inelastic bodies is-
zero
between 0 & 1
one
more than one
25908. The friction experienced by a body, when at rest, is known as-
static friction
dynamic friction
limiting friction
coefficient of friction
25909. Which of the following is a scalar quantity?
Force
Acceleration
Speed
Velocity
25910. One joule is equal to-
0.1 N-m
1 N-m
100 N-m
10 N-m
25911. When a body falls freely under gravitational force, it possesses---- weight.
no
maximum
minimum
25912. The minimum force required to slide a body of weight W on a rough horizontal plane is-
W sineθ
W coseθ
W tanθ
none of these
25913. The friction experienced by a body, when in motion, is known as-
rolling friction
static friction
limiting friction
dynamic friction
25914. The total motion possessed by a body, is called
impulsive force
momentum
weight
mass
25915. If the gravitational acceleration of any place is doubled, then the weight of a body will be-
g/2
g
2g
√2g
25916. The rate of change of displacement of a body is called
velocity
momentum
acceleration
none of these
25917. The rate of doing work is known as-
potential energy
power
kinetic energy
none of these
25918. The matter contained in a body, is called-
impulsive force
momentum
weight
mass
25919. The center of gravity of a T-section 100mm x 150mm x 50mm from its bottom is-
[Note]: ¯x=a₁ x₁ + a₂ x₂ /a₁ + a₂
=(100x50x125) + (50×100×50) / (100x50) + (50x100) = 87.5
50mm
75mm
87.5mm
125mm
25920. The unit of work in SI unit is-
newton
joule
erg
kg.m