Answer / Chandrakant Mani Pathak

A Rotating Diode Tester (RDT) is used to test the health of the rotating diodes in an alternator while it's running. This device measures the voltage across and current through each diode, helping to identify any faults.

What will be cross section area of copper conductor for carry 2000 amps & 2500 amps....sq.mm.?/

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what is volt drop formula?stm

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Why Humming noise originated in Starter motor and how it was generated ?

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advantage of cu cable over al cable

4 Answers   Havells,

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What is meant by celling voltage & current in excitor ?

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we have one pumping station and 4.6 MW 7 no.s synchronous motors.so there is no required HT capacitor to improve power factor.But we have two no.s of 25 Mva power transformer connect to distribute the power for motors connect with 220 kv line.So i have required the HT capacitor to improve power factor at HT side i mean power transformer bus side.So please suggest how much HT capacitor banks required for same.

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what is the series parallel connection of capacitors? and how can we use these application in three phase motors for controlling torque?

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What is the function of Buchholz relay in transformer ?

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what is cut out fuse?

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Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . please reply..............

9 Answers   NTPC,

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how to calculate the tarriff for an industry whose kva demand is 10 mva

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In Delta connected capcitor bank, One bank failed due to some problem. Can we connect Open delta capacitor bank to 3 phase motor. The motor voltage rating is 6.6KV. IF yes what changes will happen?

1 Answers  

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