Q121
Open questionThe maximum efficiency of spiral gears is (where = Shaft angle and = Friction angle)
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Q122
Open questionThe dedendum circle diameter is equal to (where, = Pressure angle)
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Q123
Open questionWhen the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel and = Pressure angle)
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Q124
Open questionEffort of a governor is the
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Q125
Open questionPower of a governor is the
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Q126
Open questionIn a reciprocating steam engine, which of the following forms a kinematic link?
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Q127
Open questionThe Coriolis component of acceleration acts
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Q128
Open questionIn a shaper mechanism, the Coriolis component of acceleration will
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Q129
Open questionThe instantaneous center of a rigid thin disc rolling on a plane rigid surface is located at
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Q130
Open questionWhich of the following statements regarding laws governing the friction between dry surfaces are correct?
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Q131
Open questionIn vibration isolation system, the transmissibility will be equal to unity, for all values of damping factor, if is
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Q132
Open questionFor an involute gear, the ratio of base circle radius and pitch circle radius is equal to
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Q133
Open questionThe frictional torque transmitted in a flat pivot bearing, assuming uniform wear, is
(Where μ = Coefficient of friction, W = Load over the bearing, R = Radius of bearing)
(Where μ = Coefficient of friction, W = Load over the bearing, R = Radius of bearing)
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Q134
Open questionIn a four bar chain or quadric cycle chain
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Q135
Open questionThe engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be
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Q136
Open questionA torsional system with discs of moment of inertia and as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to
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Q137
Open questionA body having moment of inertia of 30 kg m2 is rotating at 210 RPM and mashes with another body at rest having M.I. of 40 kg m2. The resultant speed after meshing will be
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Q138
Open questionWhen one of the links of a kinematic chain is fixed, the chain is known as a
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Q139
Open questionThe example of completely constrained motion is a
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Q140
Open questionThe example of successfully constrained motion is a
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