Answer / suhana_t

The frequency used in Rodents Repllant System is
above 20KHz i.e Ultra Sonic Frequency..

Infrasonic:-The Frequencies bellow 20 Hz.

Ultrasonic Frquencies:-The Frequencies Above 20 KHz.

Audio Frquencies:-The Frequencies ranges btw 20 Hz to 20
KHz.

What is the Relation b/w star delta starter , DOL starter and two speed starter. if we want to rotate a 20 kw fan in 2 speeds which type of two speed starter we have 2 use?

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Is the theorem applicable to ac sources?

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what are the factors to be considered while design the breaker either HT or LT??

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What is AMF Panel????

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for any load, what happen if we use the cable rating above its normal rating

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