Question: 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__________________?

• 1. 20 kg, – ve sense
• 2. 20 kg, + ve sense
• 3. 10 kg, + ve sense
• 4. 10 kg, – ve sense

Question: The coefficient of friction depends on________________?

• 1. area of contact
• 2. shape of surfaces
• 3. strength of surfaces
• 4. nature of surface

Question: 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_________________?

• 1. maximum
• 2. minimum
• 3. zero
• 4. infinity

Question: Angle of friction is the_______________________?

• 1. angle between normal reaction and the resultant of normal reaction and the limiting friction
• 2. ratio of limiting friction and normal reaction
• 3. the ratio of minimum friction force to the friction force acting when the body is just about to move
• 4. the ratio of minimum friction force to friction force acting when the body is in motion

Question: The possible loading in various members of framed structures are_________________?

• 1. compression or tension
• 2. buckling or shear
• 3. shear or tension
• 4. all of the above

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

• 1. concurrence of the medians
• 2. intersection of its altitudes
• 3. intersection of bisector of angles
• 4. intersection of diagonals

Question: 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____________________?

• 1. two members with unknown forces of the frame
• 2. three members with unknown forces of the frame
• 3. four members with unknown forces of the frame
• 4. three members with known forces of the frame

Question: The ratio of limiting friction and normal reaction is known as _____________________?

• 1. coefficient of friction
• 2. angle of friction
• 3. angle of repose
• 4. sliding friction

Question: On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be___________________?

• 1. towards the wall at its upper end
• 2. away from the wall at its upper end
• 3. upwards at its upper end
• 4. downwards at its upper end

Question: Frictional force encountered after commencement of motion is called ___________________?

• 1. post friction
• 2. limiting friction
• 3. kinematic friction
• 4. dynamic friction