Definition of
sensitiveness :
The ratio of the difference between the maximum and minimum equilibrium speed to the mean equilibrium speed is called sensitiveness of governor.
A governor is said to be
sensitive when it readily responds to a small change of speed. The movement of
the sleeve for a fractional change of speed is the measure of
sensitivity.
Explanation of sensitiveness :
As a governor is used to
limit the change of speed of the engine between minimum to full-load
conditions, the sensitiveness of a governor is also defined as the ratio of the
difference between the maximum and the minimum speeds to the mean equilibrium
speed.
Sensitiveness = Range of
speed / Mean speed
= N2 -
N1 / N
= 2 ( N2
- N1 ) / N1 + N2
Where,
N = Mean speed
N1 = Minimum
speed corresponding to full load condition
N2 = Maximum
speed corresponding to no-load condition