Answer / narayanan.m

due to high starting torque

Answer / kj

With an induction motor the speed is dependant on the
frequency and is the same as the frequency minus slip. For
a 4 pole motor this is about 1440 to 1460 RPM.
It does not depend on the voltage. The torque is dependant
on the voltage.
A 400 volt motor supplied at 250 volts would not have
anywhere the power output.

which phase is preferred for connecting 1 phase vt used for synchronizing OHL? WHY?

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how we can measure the dc current instead of clamp meter ?

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control wiring purpose,standards, ferrule code standard, interlock, schematic, symbol

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why the flooring of substation is done with small pebbles or stones..?

16 Answers  

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