Q.1
Work done is said to be zero, when
Q.2
The friction experienced by a body, when in motion, is known as
Q.3
Static friction is always __________ dynamic friction.
Q.4
The center of gravity of a quadrant of a circle lies along its central radius (r) at a distance of
Q.5
The acceleration of a body sliding down an inclined surface is
Q.6
The C.G. of a plane lamina will not be at its geometrical centre in the case of a
Q.7
A framed structure is imperfect, if the numbers of members are __________ (2j - 3).
Q.8
If a number of forces are acting at a point, their resultant will be inclined at an angle 'θ' with the horizontal, such that
Q.9
Two coplanar couples having equal and opposite moments
Q.10
The ratio of static friction to dynamic friction is always
Q.11
The units of moment of inertia of an area are
Q.12
Limiting force of friction is the
Q.13
Coulomb friction is the friction between
Q.14
If a suspended body is struck at the center of percussion, then the pressure on die axis passing through the point of suspension will be
Q.15
Which of the following statement is correct in connection with projectiles?
Q.16
The slope on the road surface generally provided on the curves is known as
Q.17
The periodic time of one oscillation for a simple pendulum is (where l = Length of the pendulum.)
Q.18
The velocity ratio for the first system of pulleys is (where n is the number of pulleys.)
Q.19
The acceleration of a particle moving with simple harmonic motion, at any instant is given by
Q.20
The range of projectile on a downward inclined plane is ________ the range on upward inclined plane for the same velocity of projection and angle of projection.
Q.21
The coefficient of restitution for inelastic bodies is
Q.22
A framed structure is perfect if it contains members equal to (Where, n = number of joints in a frame)
Q.23
The velocity ratio of a differential wheel and axle with 'D' as the diameter of effort wheel and d1 and d2 as the diameters of larger and smaller axles respectively, is
Q.24
The center of gravity of a triangle lies at the point of
Q.25
A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to
Q.26
Which of the following is a scalar quantity?
Q.27
Which of the following is a vector quantity?
Q.28
Which of the following statement is correct?
Q.29
The maximum velocity of a particle moving with simple harmonic motion is
Q.30
A particle inside a hollow sphere of radius r, having coefficient of friction µ can rest up to height of
Q.31
Which of the following statement is correct?
Q.32
The centre of gravity of a uniform lamina lies at
Q.33
Moment of inertia of a circular section about an axis perpendicular to the section is
Q.34
The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is
Q.35
A screw jack used for lifting the loads is
Q.36
A machine having an efficiency less than 50%, is known as
Q.37
Which is the correct statement about law of polygon of forces?
Q.38
Which of the following is an equation of linear motion?(where, u and v = Initial and final velocity of the body, a = Acceleration of the body, and s = Displacement of the body in time t seconds.)
Q.39
The moment of inertia of a thin disc of mass ‘m’ and radius ‘r’, about an axis through its center of gravity and perpendicular to the plane of the disc is
Q.40
If three forces acting in different planes can be represented by a triangle, these will be in
Q.41
The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius.
Q.42
The rate of change of displacement of a body is called
Q.43
Effect of a force on a body depends upon
Q.44
Which of the following is not a scalar quantity?
Q.45
If the gravitational acceleration at any place is doubled, then the weight of a body will be
Q.46
Which of the following is not a vector quantity?
Q.47
Which of the following is not the unit of power?
Q.48
Pick up wrong statement about friction force for dry surfaces. Friction force is
Q.49
A body will begin to move down an inclined plane if the angle of inclination of the plane is _________ the angle of friction.
Q.50
The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as
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