Question Statement:
Tractors and Power tillers: Type, selection, maintenance and repair of tractors and power tillers; tractor clutches and brakes; power transmission systems – gear trains, differential, final drives and power take-off; mechanics of tractor chassis; traction theory; three point hitches - free link and restrained link operations; steering and hydraulic control systems used in tractors; tractor tests and performance; human engineering and safety considerations in design of tractor and agricultural implements.
The combined mass of a tractor seat and operator is 75 kg and the undamped natural frequency of the operator seat is 10 rad/s. If seat suspension damping rate is 600 N m⁻¹ s, the damping ratio is
Options:
- (A) 0.2
- (B) 0.4
- (C) 0.6
- (D) 0.8