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The ratio of the actual damping coefficient to the critical damping coefficient is called damping factor.
When a body moves with simple harmonic motion, the product of its periodic time and frequency is equal to
In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient is 420 N/m/s, then logarithmic decrement is equal to
For high speed engines, the cam follower should move with
In a coupling rod of a locomotive, each of the four pairs is a __________ pair.
If Ï‰/Ï‰n is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach
In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon
When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be
The factor which affects the critical speed of a shaft is
The partial balancing of reciprocating parts in locomotives produces
The pair is known as a higher pair, when the relative motion between the elements of a pair is
When the connection between the two elements is such that only required kind of relative motion occurs, it is known as selfclosed pair.
The Whitworth quick return motion mechanism is formed in a slider crank chain when the
The primary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is
The acceleration of the particle moving with simple harmonic motion is inversely proportional to the displacement of the particle from the mean position.