The ratio of limiting friction and normal reaction is known as _____________________?
(A) coefficient of friction
(B) angle of friction
(C) angle of repose
(D) sliding friction
(D) friction resistance
A framed structure is perfect if it contains members equal to_________________?
(A) 2n-3
(B) n-l
(C) ‘2n-l
(D) n – 2
(D) 3n-2. where n = number of joints in a frame
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
(D) four members with two known forces
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
(D) all of the above
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
(D) bending
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
(D) ratio of static and dynamic friction
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
(D) same as the force applied
The coefficient of friction depends on________________?
(A) area of contact
(B) shape of surfaces
(C) strength of surfaces
(D) nature of surface
(D) all of the above
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
(D) 45 kg, + ve sense
The boiling point of ammonia is___________________?
(A) -100°C
(B) -50°C
(C) – 33.3°C
(D) 0°C
(D) 33.3°C