Answer / muhammad

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why not phase to phase fault occure in raining day in hv sub-station?

1 Answers   Getco,

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Can we perform parallel operation of two transformers when one transformer on load?

3 Answers  

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neutral earth resistance testing is it possible for transformer while in load condition

0 Answers  

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In 110V DC supply,if a closed circuit gets open, How can we identify the voltage which is measured after the resistor(4KOhm) which is open with negative.it shows 55V +ve when measured, also the actual positive source is 55V +ve .Because there is no voltage drop in open circuit. How can we identify whether this is the voltage which is series with the resistor or the DC source direct +ve.

1 Answers   GE,

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What is the difference between Class PX & Class X CT's

2 Answers   ABB,

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what is suitable alternative for an igbt?

4 Answers  

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if you are in a software company,then why do you want to come in a core company like sail, ntpc(where lots of trouble like tension but you have a good life in a it company) ?

0 Answers   Sail,

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If we want to change a contactor of faulty one what are the conditions want to fullfil

0 Answers   Qatar Shell,

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how to measure dc earth leakage current?

0 Answers  

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a 3 phase slip ring induction motor is wound for 4 poles on stator and 6 poles on rotor; when 3 phase balanced voltage source at 50 hz is applied to motor it will run at a)1500rpm b)1000rpm c)750 rpm d)zero rpm

13 Answers   Essar, PSPCL, PSTCL,

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How to connect frequency meter in metering circuit?(single phase and three phase frequency meter)

3 Answers  

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difference between servo motor and synchronous motor

0 Answers   Hitachi,

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