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What  is  meant  by  droop and  why  it  is  provided?

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Speed   droop is a governor feature   which allows a prime mover to run at a proportionately lower speed as load is increased

While    at   the   same   time    increasing   fuel   to   compensate   for additional load. It permits a  stable  division  of load  between  two  prime  mover  electricity  or mechanically  connected  to  common  services. number  of  engines   delivering  power  to a common shaft  or  bus  bar).  Speed  droop  is defined  as the difference  in  revolutions  per  minute  from  the equilibrium  revolutions  at no load  on the engine  to that  at full  load  .It  is expressed  as  a percentage  of a maximum rated  speed.

Droop  is  specially  provided  to  stabilize  the  governor  function. If  droop is  not  provided,  the  governor  becomes  too  sensitive  and   the  governor hunts resulting  in  speed  fluctuation.

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