Q.1.
A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve
Q.2.
Two coplanar couples having equal and opposite moments
Q.3.
The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is as per the principle of
Q.4.
In determining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than
Q.5.
Which of the following is not a scalar quantity
Q.6.
The C.G. of a plane lamina will not be at its geometrical centre in the case of a
Q.7.
Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction
Q.8.
Coulomb friction is the friction between
Q.9.
Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one
Q.10.
A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi-cricular disc and horizontal surface is i. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will
Q.11.
According to Lami's theorem
Q.12.
Which one of the following statements is not correct
Q.13.
The necessary condition for forces to be in equilibrium is that these should be
Q.14.
The centre of percussion of a solid cylinder of radius r resting on a horizontal plane will be
Q.15.
A single force and a couple acting in the same plane upon a rigid body
Q.16.
If a suspended body is struck at the centre of percussion, then the pressure on die axis passing through the point of suspension will be
Q.17.
Center of gravity of a solid cone lies on the axis at the height
Q.18.
Dynamic friction as compared to static friction is
Q.19.
Which of the following do not have identical dimensions?
Q.20.
The co-efficient of friction depends upon
Q.21.
The center of gravity of a uniform lamina lies at
Q.22.
The center of gravity of a triangle lies at the point of
Q.23.
A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to
Q.24.
A particle inside a hollow sphere of radius r, having coefficient of friction -rr can rest upto height of
Q.25.
The center of percussion of the homogeneous rod of length L suspended at the top will be
Q.26.

n and j are numbers of members and joints in a frame. It contains redundant members if

Q.27.

The tensile force required to cause an elongation of 0.mm in a steel rod ofmm length andmm diameter, is (where E = 2 x 106 kg/cm2)

Q.28.

The materials which have the same elastic properties in all directions, are called

Q.29.

The property of a material by which it can be beaten or rolled into thin plates, is called

Q.30.

According to Unwin's formula, the diameter d of a rivet of plate of thickness t is :