08-16-2017, 10:20 PM
1. The relationship between the actual damping coefficient and the critical damping coefficient is called the damping factor.
2. When a body moves with a simple harmonic motion, the product of its periodic time and frequency is equal to
3. In a vibratory system, if the actual damping coefficient is 40 N / m / s and the critical damping coefficient is 420 N / m / s, then the logarithmic decrement is equal to
4. For high-speed motors, the cam follower must be moved with
5. In a locomotive docking bar, each of the four pairs is a __ pair.
6. If / n is too high for a body vibrating under steady state vibrations, the phase angle for all damping factor values will tend to approach
7. In a circular cam follower with roller follower, the acceleration in any position of the lift will depend only on
8. When the ratio between the control force (Fc) and the radius of rotation ® for a spring-controlled regulator is Fc = ar + b, then the governor will be
9. The factor affecting the critical speed of an axis is
10. The partial balancing of alternative parts in locomotives produces
11. The pair is known as a higher pair, when the relative movement between the elements of a pair is
12. When the connection between the two elements is such that only the required type of relative movement is required, it is known as a self-closing pair.
13. Whit worth's rapid displacement mechanism is formed on a crank-strap when
14. The primary unbalanced force is maximum when the angle of inclination of the crank with the stroke line is
15. The acceleration of the particle moving with simple harmonic motion is inversely proportional to the displacement of the particle from the middle position.