Q121
Open questionA machine having an efficiency less than 50%, is known as
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Mechanical Engineering · all questionsEngineering Mechanics
Engineering Mechanics
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Q122
Open questionWhich is the correct statement about law of polygon of forces?
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Q123
Open questionWhich 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.)
(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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Q124
Open questionThe moment of inertia of a thin disc of mass ‘m’ and radius ‘r’, about an axis through its center of gravity and perpendicular to the plane of the disc is
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Q125
Open questionIf three forces acting in different planes can be represented by a triangle, these will be in
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Q126
Open questionThe velocity ratio of a differential wheel and axle with 'D' as the diameter of effort wheel and d1 and d2 as the diameters of larger and smaller axles respectively, is
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Q127
Open questionA circular hole of 50 mm diameter is cut out from a circular disc of 100 mm diameter as shown in the below figure. The center of gravity of the section will lie
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Q128
Open questionA framed structure is perfect if it contains members equal to (where, n = number of joints in a frame)
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Q129
Open questionThe velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is
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Q130
Open questionA screw jack used for lifting the loads is
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Q131
Open questionThe maximum velocity of a particle moving with simple harmonic motion is
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Q132
Open questionA particle inside a hollow sphere of radius r, having coefficient of friction µ can rest up to height of
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Q133
Open questionThe centre of gravity of a uniform lamina lies at
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Q134
Open questionThe range of projectile on a downward inclined plane is ________ the range on upward inclined plane for the same velocity of projection and angle of projection.
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Q135
Open questionThe coefficient of restitution for inelastic bodies is
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Q136
Open questionA flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to
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Q137
Open questionWhich of the following is a scalar quantity?
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Q138
Open questionWhich of the following is a vector quantity?
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Q139
Open questionWhich of the following statement is correct?
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Q140
Open questionWhich of the following statement is correct?
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