In 3 phase induction motor even with low Voltage it reaches nearly it's ra

In 3 phase induction motor even with low Voltage it reaches
nearly it's rated speed why? (for example instead of 400V it
reaches with 250V)

Question Posted / saravanaraj

2 Answers
4677 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

In 3 phase induction motor even with low Voltage it reaches nearly it's rated speed why? (for ..

Answer / narayanan.m

due to high starting torque

Is This Answer Correct ?

1 Yes

0 No

In 3 phase induction motor even with low Voltage it reaches nearly it's rated speed why? (for ..

Answer / kj

With an induction motor the speed is dependant on the
frequency and is the same as the frequency minus slip. For
a 4 pole motor this is about 1440 to 1460 RPM.
It does not depend on the voltage. The torque is dependant
on the voltage.
A 400 volt motor supplied at 250 volts would not have
anywhere the power output.

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

Can you explain the phase displacement between primary and secondary of power transformer of any vector group(for ex)?

1 Answers

Dear sir, iam completed iti ncvt electrician 2000-2002 & diploma electrical eng completed 2008-2010 distance education in rvd university, still i got B licences only but my working company want C licences, how to i get c licencese pls reply me iam in critical situation thank you karthick 9841637803

0 Answers

what is the differnce b/w voltage and current

8 Answers Steel Plant,

This is reqd for a 1MW Solar power plant..We have 2DC outputs from the solar panels Connected to 2INVERTOR panels.. Output from invertor is 3ph,280v,500kva,50hz.These are connected to individual ACB.This has to be stepped up to 11KV ,1250KVA SYSTEM.Now can I use (1) one more ACBTO GIVE A COMBINED OUTPUT OF 1000KVA,280V & STEP UP THE OUTPUT BY USING a single two winding 3 ph transformer 11kv/1250kva. or (2)use the two outputs and connect to one three winding transformer of above rating..Pls suggestwith details.

0 Answers

what is the speed of the darkness?

3 Answers Wipro,

What is mean by powerfactor. What is the difference between leading and lagging power factor?

2 Answers HCL,

WHAT IS SITTING AMPS IN OVER-LOAD RELAY FOR 1PH OR 3PH MOTORS?IF ITS NAME PLATE GIVEN MAX AMPS 10AMPS?

0 Answers

why occ characteristics of generator is also called as magnatization characteristics

1 Answers

Name quantities which are not transformed in the tranformer.

3 Answers

why earth wire is needed in a wiring system