Question 5
Marks : +2 | -2
Pass Ratio : 100%
For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that
Explanation: The greater the lift of the sleeve corresponding to a given fractional change in speed, the greater is the sensitiveness of the governor. It may also be stated in another way that for a given lift of the sleeve, the sensitiveness of the governor increases as the speed range decreases.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
A governor is said to be hunting, if the speed of the engine
Explanation: A governor is said to be hunt if the speed of the engine fluctuates continuously above and below the mean speed. This is caused by a too sensitive governor which changes the fuel supply by a large amount when a small change in the speed of rotation takes place.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
In a Hartnell governor, if a spring of greater stiffness is used, then the governor will be
Explanation: Stiffness is directly proportional to sensitiveness. Therefore, it stifness is greater, the governor will be less sensitive.