If the capacity of a Transformer is 20/26 then what does 20/26 shows? what is its purpose?
Latest Answer: 20/26 means 20 primary voltage rating 26 secondary voltage rating ...
How reactive power is related to alternator? Wheather it is generated or consumed? Explain
Latest Answer: An Inductive Load say Induction Motor connected to an Alternator requires Active (KW) & Reactive Power (KVAr) both. This Motor receives Apparent Power (KVA --> KW + KVAr) from the Alternator. Active Power is what the Motor is delivering ...
A motor rated 230V, 50HZ taking 100KW no load amps, what happen if just frequency goes to 60Hz?
Latest Answer: Ns=120f/pIf frequency increase than RPM increases. ...
How much min BDV of oil in transformer is required when charged it first time in 11kv, 66kv and 132 kv of transformer?
How can we find u1,v1,w1 and u2,v2,w2 in three phase motor when operating in delta as we have on identification on motor lead which comes out from winding.
Latest Answer: Assume any one winding polarity U1,U2 & give AC supply to it.Connect other two winding in series (V1-V2,W1-W2) and connect the lamp load between this winding(V1,W2).If you have making correct polarity connection in series then lamp will glow bright and ...
Motor manipulator detail is 230v 50hz frequency. If you increase frequency what will happen?Is there any need for coil protection?
Latest Answer: Speed N=120f/p so if we increase the frequency the seed will also increase as
per our electrical stands in India we are maintaining 50Hz as the constant
frequency it is better maintaining the frequency.
Definitely there will be a damage for coil ...
If we put field winding on stator and armature winding on rotor then how will it operate? Will it rotate at synchronous speed or not? (Assuming that the alternator is feasible)
Latest Answer: Yes, It would surely operate and run at synchronous speed. But it would be uneconomical because we should have 3 slip rings of very high current handling capacity and because of this efficiency will decrease and we will require to have high level of insulation ...
Is it possible to run the induction generator only with the inductive load (without the use of capacitors for supplying the reactive power)? Explain
Latest Answer: We use capacitor in single phase induction motor to produce displacement in two winding which consequently produce rotating feild, now we can have a similar effect by using shaded pole method, but used only in small sized motor (40w ...
Why star point of star connected motor is not grounded?
Latest Answer: Normally the 3 phase induction motors are not star connected. In the star connected machine, the phase voltage will be 1/ √3 times. So that the torque of the machine will be reduced. Because of this reason normally all the induction motors are having ...
Why alternator is operated at lagging power factor?
How alternator responses with changing the load?
Latest Answer: Since the Synchronous generator having the property of supplying the reactive power along with the real power, this can be operated in lagging power factor only. Suppose if it want to work with leading power factor means, it should absorbed reactive power ...
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