Answer / gopal manda

using commutator in armature winding.we can change the AC
motor to DC.

Answer / dwivedi sandeepdhar

replacing commutator in D C motor we have ac motor.

Answer / anil ku nayak

by using rectifier we can change ac motor to dc.

Answer / mostafa abdel nasser

By using amplifiers

how to do CT Burden test

2 Answers  

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1.How to calculate backup time from series connected battery of 12v dc with 26Ah for 2battery?

3 Answers  

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We need to current density & short circuit calculation at 65kA for aluminium & copper busbar.

0 Answers  

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What is the basic principle of circuit breaker?.. I read that it works on electro-mechanical principle... Does it require both electric n magnetic conversion to act?

3 Answers  

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Describe: Energy efficient motors

1 Answers   Reliance,

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Auto transformer starter gives the same effect as star/delta strater if its turn ratio = A 0.5 B 0.67 C o.66 D 0.577

1 Answers  

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When distance between two pulleys is not fixed, the tension of belt is adjusted by a) driver shaft b) driven shaft c) adjustment screw d) belt

0 Answers   BMRCL,

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Why in USA supply voltage parameters(230V,60Hz)are different,is there any advantage please brief.

1 Answers   APC, DRJ ARDE,

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Where the ON LOAD TAP CHANGER is provided in the setp up transformer?

2 Answers  

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What is a pulse transformer?? Can it be called as a dc transformer??

1 Answers  

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How calculated single phase induction motor req. Capacitor?

0 Answers  

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heat can flow from a body at low temperature to a body at higher temperature only when ........ is supplied from an external source A). Voltage B). Current C). work D). Mass

7 Answers   BMRCL,

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