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

If one lamp connects between two phases it will glow or not?

0 Answers  

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why power generated only 11KV not more than???????? and why power up/down is multification of 11*?=??.??? foe Example 11/33,11/66,66/11KV etc,

8 Answers   Essar,

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where we use zero sequence current transformer or core balancing ct.

2 Answers  

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xplain in detail d pr. of synchronous motors? why syn. generators r used for the production of electricity?

4 Answers  

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What is corona? and what is the purpose of corona belt in substation ? why they connect these end of the buses ?

2 Answers  

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What is the main purpose of c.f.b.c.boiler

0 Answers  

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what is the difference between AHU and FCU .

1 Answers   JLL,

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why Y CONNECTION IS BETTER INTERMS OF EFFICIENCY AND P.F FOR A LAOD LESS THAN 40% AND WHY AFTER DELTA IS BETTER FOR > 40%

0 Answers  

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234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

0 Answers   Jubail O&M,

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What is the formula to find maximum load of a DG (Single phase and Three phase)?

1 Answers  

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how define the torque in ac drive. from electrical side in the drive friquency ,voltage and current three factor is there.

0 Answers  

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what is green house effect?

4 Answers  

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