Answer / pravesh

the difference between the electroic and ordinary regulator
is that in electronic reg. power losses are less i.e. for
as we decrese the speed the electronic reg. give the power
needed for that perticular speed but in case of ordinary rh
type reg. the power wastage is same for every speed and no
power is saved

Answer / bhanu pratap

in electronic regulator triac is employed for speed cntrl.
by varying the firing angle spreed is cntrled but in
rheostatic ctrl resistance is decreased by steps to achieve
speed cntrl

Answer / leo thomas

in electronic regulators diac or triac is used.These
devices conducts only some firing angle that means we are
utilizing only a part of the sine wave,not completely.
In rheostatic control total sine wave using ,here energy
wasting

What is Wlak Test in Fire Alarm System????

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why rating of motor in HP ?

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state the construction of incondenscent lamp?

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