Gearup-JE'19: Engineering Mechanics Quiz-1

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Question 1

The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

• AStatic friction
• BLimiting friction
• CDynamic friction
• DCoefficient of friction

Question 2

The angle of inclination of the plane at which the body begins to move down the plane, is called

• AAngle of friction
• BAngle of projection
• CAngle of repose
• DNone of these

Question 3

Center of gravity of the triangle in the cartesian system on the axis of symmetry lies at a height of ______.

• Aone-half of the total height above base
• Bone-third of the total height above base
• Cone-fourth of the total height above base
• DNone of these

Question 4

The force on a particle of mass 1 kg is 2 kgf, the acceleration of the particle (in m/s²) is

• A2
• B19.62
• C9.81
• D0.5

Question 5

Action and reaction_______.

• Ahave equal magnitude
• Bhave resultant zero
• Cact in opposite direction
• Dall of these

Question 6

The figure given below shows a crusher having several cylindrical rollers of weight W. The crushing force due to each roller will be:

• AW
• Bless than W
• Cmore than W
• Dunpredictable

Question 7

Rate of change of momentum is proportional to the

• Adisplacement
• Bvelocity
• Cacceleration
• Dimpulse force

Question 8

The sum of kinetic and potential energy of a falling body __________.

• Ais constant at all points
• Bvaries form point to point
• Cis maximum at starting and goes on increasing
• Dis maximum at starting and goes on decreasing

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