Answer / tahir

In AC supply frequency 50/60 Hz. DC motor can not run with good performance. it may produce harmonics

Answer / marsad

Dc motor cannot be run at good performance when powered by AC supply.. this will result in heavy core loss...
if you really wanted to use both ac or dc suppy for working a motor. you should prefer a universal motor. which is actually an AC series motor with some modifications.. .

Answer / raghunath

The motor can rotate from forward and reverse direction depending upon the + and - cycles

how can we rotate a single phase motor (without cap.)in reverse direction?

2 Answers  

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What is the use of mc( moving coil) in dc voltmeter and dc ammter and what is the use of ( moving iron)in ac voltmeter nd ac ammeter

0 Answers   HCL,

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What is load staggering or load shifting in the context of power distribution?

1 Answers  

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What is A.C Resistance for Earthing ?

2 Answers  

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We have 250 KW x 2 motors, which are load from 25% to 100% varying load in every minute , so how can we compansate the power factor. pl give your opinions on the above subject.

0 Answers  

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what is the basic differnce between ground and earth

3 Answers  

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what is second harmonic, how is effect transformer ?.

2 Answers   DEWA,

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What is the basic difference among Circuit breaker,Contractor and Isolator? Are they different names of same device/equipment?

2 Answers  

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what is EP panel and AHS panel

2 Answers  

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State uses of different types of stsrters with different capacities of motors as below: a. up to 5HP b. above 5hp to 10hp c. above 10hp to 20hp d. above 20hp

0 Answers  

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how to conduct dc resistance test for rotor of an alternator and how to measure the rotor dc resistance value theoritically?

0 Answers  

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ow can i get certificate of competency as electrical supervisor and my diploma in electrical engineering from jalgaon.

0 Answers   ONGC,

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