Answer / bharat

Field control & Armature control.

Ref. Electrical Technology, Auth. BL Theraja Vol-II

Answer / balamurugan

ward leonard method,armature control.

Answer / erharisheee51

BY CONTROLING THE VOLTAGE , WE CAN CONTROL THE SPEED OF THE
MOTOR.

Answer / soutrick chakraborty

we can control the speed of the dc shunt motor by two
methods. but at first we should know there are two type
speed, 1> base speed 2> top speed. for reach the base speed
we increase the armature voltage maximum , which is
mentioned in motor nameplate. and reach the top speed we
should decrease the feild flux, it means feild current,
which is also mentioned in motor name plate.

Hello sir. if u have electical engineering exam paper then plz mail me at bhumika_1187@yahoo.co.in. i m appearing exam for HPCL.

1 Answers   HPCL,

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What are the implications when the power factor is is leading condition ?

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The exciting current of a transformer is non sinusoidal. why?

2 Answers  

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. Draw the vector diagram and condition for the following: 1) Dyn1 2) Ynd0 3) YnYn0

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Why neutral cable carry current.

0 Answers   Tech Mahindra,

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why we setting 95 deg and 105 deg in wti and oti of distibution transformer ? give the reson for that ?

0 Answers  

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1. Why transfomer reting in KVA and Motor in HP

11 Answers   AirIndia, Jindal, Mind Tree,

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an amazing situation was faced when an alive distribution panel with 415 volts and carrying almost 200Amps has become short and this metal cubical showing 220 volts against neutral and earth. to redress any confusion i checked the panel with help of single 200watts test lamp which also glowing with max.intensity b/w neutral & metal body of DB. amazing situation is that i hold the DB firmly more than once with necked foot means without insulated shoes but not received any electrical shock. whereas our all running gen sets neutral points also proper grounded and this short DB was completely earthed , this is beyond my understanding . any body explain how is it possible . our running gen set neutral also grounded firmly

1 Answers  

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why do the alternator doesnt have open circuited windings in armature???

1 Answers  

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i alternator which of genarator used for excitor the what is reason?

3 Answers  

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Why collecting electrode of ESP to be earthed

0 Answers   NBVL,

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is the electrical energy photo copy possible or not???????????? give me some idea about that i m very great full tu u.

5 Answers  

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