A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span___________________?

A. 2.5 cm
B. 3.0 cm
C. 4.0 cm
D. 5.0 cm

In the equation of virtual work, following force is neglected_______________________?

A. Reaction of any smooth surface with which the body is in contact
B. Reaction of a rough surface of a body which rolls on it without slipping
C. Reaction at a point or an axis, fixed in space, around which a body is con-strained to turn
D. All of the above

Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction___________________?

A. Along the plane
B. Horizontally
C. Vertically
D. At an angle equal to the angle of friction to the inclined plane

The resultant of the following three couples 20 kg force, 0.5 m arm, $ ve sense 30 kg force, 1 m arm, – ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be__________________?

A. 20 kg, – ve sense
B. 20 kg, + ve sense
C. 10 kg, + ve sense
D. 10 kg, – ve sense

The coefficient of friction depends on________________?

A. Area of contact
B. Shape of surfaces
C. Strength of surfaces
D. Nature of surface

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_________________?

A. Maximum
B. Minimum
C. Zero
D. Infinity

Angle of friction is the_______________________?

A. Angle between normal reaction and the resultant of normal reaction and the limiting friction
B. Ratio of limiting friction and normal reaction
C. The ratio of minimum friction force to the friction force acting when the body is just about to move
D. The ratio of minimum friction force to friction force acting when the body is in motion

The possible loading in various members of framed structures are_________________?

A. Compression or tension
B. Buckling or shear
C. Shear or tension
D. All of the above

The center of gravity of a triangle lies at the point of __________________?

A. Concurrence of the medians
B. Intersection of its altitudes
C. Intersection of bisector of angles
D. Intersection of diagonals

In detennining 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____________________?

A. Two members with unknown forces of the frame
B. Three members with unknown forces of the frame
C. Four members with unknown forces of the frame
D. Three members with known forces of the frame