The motion of a shaft in a circular hole is an example of
A shaft of mass (mc)and stiffness (s) is fixed at one end and carries a mass (m) at the other end. The natural frequency of its transverse vibration is same as for longitudinal vibration.
The velocity of the rubbing surface __________ with the distance from the axis of the bearing.
The unbalanced force due to reciprocating masses
Pitch point of a cam is
A slider moves at a velocity v on a link revolving at ω rad/s. The coriolis component of acceleration is
When a body is subjected to longitudinal vibrations, the stress induced in a body will be tensile or compressive stress.
The component of the acceleration, perpendicular to the velocity of the particle, at the given instant is called
When the connection between the elements forming a pair is such that the constrained motion is not completed by itself, but by some other means, the motion is said to be a completely constrained motion,
Which of the following mechanism is an approximate straight line motion mechanism?
In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to
When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a
Which of the following statement is correct as regard to the difference between a machine and a structure?
An overdamped system, when disturbed from the equilibrium position, will not cross the equilibrium position.
The load cup of a screw jack is made separate from the head of the spindle to
The acceleration of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by
The secondary unbalanced force is __________ the primary unbalanced force.
The sensitiveness of a governor depends upon the lift of the sleeve.
The frictional torque transmitted in a truncated conical pivot bearing, considering uniform pressure, is
A fixed gear havingteeth is in mesh with another gear havingteeth. The two gears are connected by an arm. The number of turns made by the smaller gear for one revolution of arm about the centre of bigger gear is
A rotary internal combustion engine has __________ cylinders.
The interference may only be avoided if the addendum circles of the two mating gears cut the common tangent to the base circles between the points of tangency.
In gears, interference takes place when
A shaft carrying two rotors at its ends will have
The ball and socket joint is an example of screw pair.
In a locomotive, the resultant unbalanced force due to the two cylinders along the line of stroke, is known as
The coriolis component of acceleration depends upon
The efficiency of a screw jack is dependent upon the load raised or lowered.
A motor car moving at a certain speed takes a left turn in a curved path. If the engine rotates in the same direction as that of wheels, men due to centrifugal force
In a differential band brake as shown in the below figure, if the length OB is greater than OA, then the force P at C should act in the downward direction.
In an open pair, the two elements of a pair
The mechanism forms a structure, when the number of degrees of freedom (n) is equal to
The equation of motion for a vibrating system with viscous damping is , if the roots of the equation are __________ then the system will be under damped.
The Ackerman steering gear mechanism is preferred to the Davis steering gear mechanism, because
The ratio of maximum fluctuation of energy to the workdone per cycle is called
A spring controlled governor is said to be isochronous when the controlling force
In a reciprocating steam engine, which of the following forms a kinematic link?
The 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
In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is Constant, then
The instantaneous centre of a rigid thin disc rolling on a plane rigid surface is located at
The power transmitted by a belt is maximum when the maximum tension in the belt is __________ of centrifugal tension.
The ratio of maximum fluctuation of speed to the mean speed is called
When a mass of a critically damped single degree of freedom system is deflected from its equilibrium position and released, then it will
The brake commonly used in motor cars is internal expanding brake.
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