where we use 1 phase & 3 phase supply ?what is major advantage using 3 pha

where we use 1 phase & 3 phase supply ?what is major
advantage using 3 phase over than single phase ?

Question Posted / kumar

3 Answers
6428 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

where we use 1 phase & 3 phase supply ?what is major advantage using 3 phase over than single ..

Answer / subhamoy chandra

The major advantage of using 3ph over single phase is that
we can have more voltage and more power.

1ph is basically used in small rated machines.

Is This Answer Correct ?

9 Yes

1 No

where we use 1 phase & 3 phase supply ?what is major advantage using 3 phase over than single ..

Answer / mahavir jagdev

1. lesser current (hence smaller capacity wiring) for same load

2. balance load on the bus bar

Is This Answer Correct ?

3 Yes

3 No

where we use 1 phase & 3 phase supply ?what is major advantage using 3 phase over than single ..

Answer / b. salazar

Three phase requires less current than single phase. The more power, the more likely you will need to use three phase. The reason is the physics of the source of electricity. Basically, a single phase circuit experiences 0V for a very tiny amount of time in each half cycle. Building up from 0V takes energy and thus requires more current. Three phase phases individually experience a 0V period, but the other phases do not hit 0V at the same time. This means that there is no build up of power in every half cycle. This need for increased current is negligible for very small machines. The larges sing phase machine in the NEC is 10 HP which requires 50A at 230V, but 10 HP at 230V three phase only requires 28A.

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

WHAT IS THE DIFFERENCE BETWEEN AN ACB & mccb 7 WHAT IS THE CRITERIA WHEN TO USE WHICH OF THE TWO

0 Answers Jk Tyres,

what will happen if multimeter(selector switch at DC voltage) and terminal at current is connected to DC supply?

0 Answers

What is mean by single phasing used in distribution of electricity in rural area of maharashtra state?

3 Answers

What is induction motor

1 Answers Indoco Remedies,

What is the reason of polyphase induction motor tripping suddenly on high current during running at 70% laod? Motor IR , winding resistance & inductance balance. Motor no load current is balance and ok as per mgfr. data.

0 Answers GNFC,

why an ideal voltage source has low internal resistance????

1 Answers

what are the different types of transformers in present? which transformer is efficient?

1 Answers TATA,

what is the difference between id fans and fd fans

12 Answers Perkins Thermal Systems,

sir& friends i want the collection of recent quetions asked in interview of top most companies please send me on my email san.jsr@hotmail.com

0 Answers

WRITEDOWN FEW RELY CODES

0 Answers Equate,

Which supply is using for train AC or DC & what is the voltage????????

16 Answers

What is current and voltage?

5 Answers

For more Electrical Engineering Interview Questions Click Here