to vary valtage from 0 - max a variac is necessary . so how to design for high power applications nearly about 200KW power1505
How you calculating the current for a 2.5 Sqmm cable. A 30 Hp 3 phase AC motor of power what size of cable is used for this motor.7 21762
What is the difference between Ceiling Fan armature and Tablefan Armature or winding.5 8736
If we connect capacitor in series DC supply so what happened?4 8191
if we supply DC power to AC transformer then what its result?15 13176
can d.c.transformer exist? if yes then what its max. rating?6 6597
how to calculate the cable size3 5649
why motor burns ?5 7142
What is correction factor in Tan delta test?1 7802
effect of single phase transformer on full load current?2 3612
What happens with squirrel induction machines if the ends of rotor conductors are kept open? Explain5 5759
How we can change the direction of rotation of Induction motor? Prove it using graphical methods.4 5465
define digital electronic
how we test a 3 phase motor on single phase supply....? HOW WE RUN A 3 PHASE MOTOR ON SNIGLE PHASE. supply for testing..? how we verify of a 3 phase motors 6 wire & name thame a1/a2/a3..b1/b2/b3 and c1/c2/c3 for connecting star delta starter ........i have only 1 phase supply ? help forum..........
What is meant by control system?
Define what is difference between fuse and breaker?
At the starting of dc motor and syn.motor and induction motor high current flowing through the winding. Due to this the windings burnt out. To avoid this different types of starters are used. But incase of transformer what Will be used (At starting no emf is induced in the primary winding)?
Pl.brief me about Electrical power distribution system from Main generating station to Industry.What is the use of in between station.
why the pf of semiconductor device is improved the electrical devices
WHY IS THE EARTH FAULT CURRENT ALWAYS LESS THAN THE NORMAL CURRENT??
what is the meaning of WYE and DELTA in Electric meter?
what happens when series resonance occurs?
What effect does a very low impedance have on the Voltage regulation? On the short-circuit current?
1.what is the funtion of chiller primary & scondary pumps. 2.what is the use of distribution lines & Types. 3.what is the use the thermal power stations & how much capacity.
why the making current is more than then the breaking current and if its true then its about a controling circuit or breaker power contact points
can someone explain that how the speed of the protection system affects the fault level calculation?
how a.c. genarator control power factor when its conected to grid supply by incrising or decresing excitation voltage.