About ENGINEERING
Following are some of the multiple choice questions on the engineering-mechanics with answers that will help the students in developing their knowledge.
(1)The friction experienced by a body, when in motion, is known as
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(2)Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the ball with velocity v is made to struck the second ball. Both the balls after impact will move with a velocity
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(3)The velocity ratio in case of an inclined plane inclined at angle θ to the horizontal and weight being pulled up the inclined plane by vertical effort is
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(4)A body of weight W is required to move up on rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by(where μ = tanφ = Coefficient of friction between the plane and the body.)
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(5)If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is
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(6)Moment of inertia of a circular section about an axis perpendicular to the section is
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(7)The unit of angular acceleration is
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(8)Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its C.G. and parallel to the base, is
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(9)Which of the following is an equation of linear motion?(where, u and v = Initial and final velocity of the body, a = Acceleration of the body, and s = Displacement of the body in time t seconds.)
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(10)The range of a projectile is maximum, when the angle of projection is
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(11)The mechanical advantage of a lifting machine is the ratio of
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(12)The bodies which rebound after impact are called
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(13)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
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(14)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 known as
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(15)The angle between two forces when the resultant is maximum and minimum respectively are
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(16)During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.
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(17)Work done is said to be zero, when
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(18)One watt is equal to
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(19)49. two like parallel forces are acting at a distance of 24 mm apart and their resultant is 20 N. It the line of action of the resultant is 6 mm from any given force, the two forces are