Q161
Open questionWhen a body of mass moment of inertia '' (about a given axis) is rotated about that axis with an angular velocity to, then the kinetic energy of rotation is
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Mechanical Engineering · all questionsEngineering Mechanics
Engineering Mechanics
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Q162
Open questionThe minimum force required to slide a body of weight 'W' on a rough horizontal plane is
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Q163
Open questionThe acceleration of a particle moving with simple harmonic motion, at any instant is given by
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Q164
Open questionThe law of the machine is (where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted and C = Another constant which represents the machine friction.)
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Q165
Open questionA machine having an efficiency greater than 50%, is known as
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Q166
Open questionThe centre of gravity of a right circular solid cone is at a distance of _________ from its base, measured along the vertical axis.
(where h = Height of a right circular solid cone.)
(where h = Height of a right circular solid cone.)
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Q167
Open questionThe time of flight (t) of a projectile on a horizontal plane is given by
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Q168
Open questionThe range of a projectile is maximum, when the angle of projection is
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Q169
Open questionIn actual machines
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Q170
Open questionIf three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either
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Q171
Open questionIn ideal machines
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Q172
Open questionIn determining 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
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Q173
Open questionA trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span
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Q174
Open questionCoplanar non-concurrent forces are those forces which __________ at one point, but their lines of action lie on the same plane.
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Q175
Open questionWhich of the following do not have identical dimensions?
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Q176
Open questionIf ‘P’ is the force acting on the body, ‘m’ is the mass of the body and ‘a’ is the acceleration of the body, then according to Newton's second law of motion,
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Q177
Open questionThe angle of inclination of the plane at which the body begins to move down the plane, is called
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Q178
Open questionIf n = number of members and y = number of joints, then for a perfect frame, n = ?
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Q179
Open questionThe velocity ratio for the third system of pulleys is
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Q180
Open questionDynamic friction as compared to static friction is
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