In DC motor,the field MMF is given by NI.N-no.of field winding turns,I-excitation and both are constant.Then how could the main flux decreases due to armature reaction.

4 Answers   Bhel, IBM,

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What is the meaning of ST and HT in electrical transmission and what are thier range.

6 Answers  

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why capacitor bank always connected in delta,why not in star to a system?

15 Answers   NHPC, NTPC,

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Generally transformers has delta primary and star secondary. But in some transformer i saw Star primary and delta secondary. what is the reason for chosing like this?

2 Answers  

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Give the two basic speed control of DC shunt motor.

4 Answers  

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What are the effects of armature reaction on a DC machine and discuss the various methods to reduce the effect.

1 Answers  

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why the frequency in india is 50 50HZ why we not select the o ther frequncy range?

6 Answers  

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WHAT IS MEANT BY vfd(VARIABLE FREQUENCY DRIVE )HOW CAN WE APPLY VFD TO MOTOR ? I WANT FULL DETAIL IF ANYBODY KNOW THE WEBSITE FOR THAT PLZ SEND .THANK U

2 Answers  

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Where do we adjust the setting of thermal over load relay & how cal calulate.

1 Answers   Hilton,

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what is cutoff voltage?

3 Answers  

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What is the current carrying capacity of 1.5 rm and 2.5 rm cable

1 Answers   RFL,

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What is C check in a diesel generator and what are parts and what has to be done during the C check

4 Answers  

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