11. Which type of gear train is used in clock mechanism to join hour hand and minute hand?
12. A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will
13. The relation $$I = \frac{2}{3}\left( {{\text{j}} + 2} \right)$$ apply only to kinematic chains in which lower pairs are used. This may be used to kinematic chains in which higher pairs are used, but each higher pair may be taken as equivalent to
14. A circle passing through the pitch point with its center at the center of cam axis is known as
15. Cylindrical cams can be classified as
16. The equation of motion for a vibrating system with viscous damping is $$\frac{{{d^2}x}}{{d{t^2}}} + \frac{c}{m} \times \frac{{dx}}{{dt}} + \frac{s}{m} \times x = 0,$$ if the roots of the equation are __________ then the system will be under damped.
17. The equation of motion for a vibrating system with viscous damping is $$\frac{{{d^2}x}}{{d{t^2}}} + \frac{c}{m} \times \frac{{dx}}{{dt}} + \frac{s}{m} \times x = 0,$$ if the roots of the equation are __________ then the system will be under damped.
18. The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing and R = Radius of bearing surface)
19. When a rigid body is suspended vertically and it oscillates with a small amplitude under the action of the force of gravity, the body is known as
20. The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is
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