Answer / naresh

Dc series motor

Answer / ravi

d.c. series motor

Answer / ashok mishra

dc series motor are used but now a day ac series motor are using in nwe loco

hi i am aziz electrical associate engineer. i am faceing problem in acs800 vvvf drive.it is tripping wothout any alarm/fault.i cheaked all parameters and fault function of drive, all are correct as well as communication parameters.but still it is tripping (drive is tripping in running position not in starting)

1 Answers  

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What are merits & De-merits of State-Space Method? What is series programming, parallel programming, general programming & direct programming ? And, difference between these programmings Techniques ?

0 Answers  

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Mention the value of earth resistance and factors on which it depends on.

1 Answers  

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how c-curve of mcb's actually looks alike?

0 Answers  

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What are the difference between CT/PT operated Meter and RRAMR Meter for HT/LT application?

0 Answers   ABC, ACB,

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What will be the voltage regulation of a full load and 0.80 power factor lagging load transformer when a two winding single phase transformer has a voltage regulation of 4.5% at full load and unity power factor?

0 Answers   HPCL,

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What is working of Trip Ckt.Supervision Relay?

1 Answers  

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how much allowable resistance that can be difference in motor all coils?

0 Answers  

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why battery dc voltage become Half when we check with respect to ground for example 120volts + and - terminals and when we check + terminal with Earth thats 60volts why 60volts same result on 24Volts and with ground 12Volts only expert answer that thanks we can not ground the battery.

2 Answers   Etimaad,

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why all transformer colour is same?

3 Answers   OPTCL,

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How many VSC based HVDC are there in India and the world

0 Answers  

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what are the settings is there for ABB REM543 Generator Protection Relay

1 Answers  

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