Answer / sukhvinder

1. 3-ph supply is constant but 1-ph is pulsating.

2. 3-ph induction motors are superior than 1 -ph motors.

3. transmission of 3-ph is economical than 1-ph.

4. voltage regulation of 3-ph is low as compared to 1-ph.

Answer / ntm

1. 3-phase supply can deliver more power that 1-phase
supply.

2. Load sharing is possible with 3-phase supply and
helpfull in maintainance.

3. Power distribution is easy with 3-phase supply

Answer / kannan marichamy

both create rotating magnetic field
rotatig magnetic field is needed for motor operation
1-phase has varying magnitute
but 3-phase has constant magnitute

Answer / satish kumar dhiman

3 phase equipment for same rating is economical
power distribution is easiy.
big advantage if one phase is fail we can use another phase
but if only single phase than wht

Answer / varis ansari

3 phase supply would use in industries more than 1 phase.

Answer / rajamani

most important this is using low level current,so low
cost ,high expensive .

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