Question { 6145 }

If an induction motor is restarted before its rotor stop
rotating, then what will be the amount of current drawn?
Is this current will be the same as motor starting current?

Answer

induction motor takes less currunet compare that of
starting current.why because the
rotor is in running condition,(ie back emf of rotor is
'not equal to 0') "Back emf have some value while rotor is
running, so the motor takes less current compare than
starting current"

Question { 2671 }

As the one point of eac phase winding is connected to each other
in satr connction. Even if that at distribution side collesion of
two diff phases result in to blast. Why?

Answer

The algebraic sum of currents in a network of conductors
meeting at a point is ZERO. not in distribution side

Question { 4191 }

What can be a rating of a transformer(KVA) if the load is
about 1000KW?illustrate by showing formula?

Answer

the rating of transformer is 850 KVA.
KVA = KW*PF, we have to take power factor value as 0.85 while doing calculation.