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

why abcd parameters are called transmission parameters

0 Answers  

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Why armature rheostat is kept in maximum position?

0 Answers  

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what is the opencircuit tes &short circuit test in transformers ,why you need this test, in poen your connecting which votmeter why?

1 Answers  

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what is the formulae for selcting capacitor bank to increas pf

4 Answers  

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i am iti student i have project to do. that IS 100MW 220\33KV SUBSTATION I WANT TO KNOW HOW TO START, LIKE CALCULATION, WHAT RATING OF CT,CVT, PT, ISOLATOR LIGHTING ARRESTER WAVE TRAP CIRCUIT BREAKER IN 22OKV SIDE, ALSO TO WARDS 33KV SIDE PLS HELP ME WITH THIS, THIS MY LIFE NOW, I KNOW AUTOCAD, I LIKE TO KNOW HOW TO CALCULATE ALL THE THINGS

3 Answers  

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Can Superposition theorem be applied to AC Circuits?Can Thevenin's Theorem be applied to AC Circuit too?

6 Answers   HCL, NPCIL, Shivam, Vast,

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In winding design, the angle of chording (β) is nearly equal to A 45 degree B 60 degree C 30 degree D 90 degree

1 Answers   Reliance,

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Name the different control schemes of electric rive.

1 Answers   DVC,

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which motor is used in mixies

10 Answers  

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how many maximum nos of add on contact we shd provide on 4 no contactor

1 Answers   Accenture,

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what is humming AC solenoid

2 Answers   Seagate,

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why the excitation is necessary to produce the reactive power

2 Answers  

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