Answer / abid ali khattak

Mostly Diode is using in Electrical Circuits across
switches for reverse supply protection. means for reverse
conduction control.

Answer / imran

in order to avoid reverse flow of current

Answer / e.saravanan

Because it opppose the flow of reverse current in the
neutral circuit

Answer / naresh

diode mostly using of electrical circutsand revarce supply
protaction andcurrent in neutral circuits

Answer / manoj dubey

generally diode is used across the DC contactor coil or
across switch in reverse biased mode. when DC contactor is
deenergised it contains some energy in form of residual
magnetic flux and creates sufficient spark during breaking
the supply. this spark detriorate the switch contact and
switch will get damaged very soon.

A 4-Pole D.C. Generator has a speed of 1500r.p.m. Then what will be the frequency of D.C. Generator ?

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