how much Hp motor is required for water suction pump in home uses ?

what is meant by velocity & gravity ?what is the difference between normal liquid flow & gravity liquid flow ?

IN 3 phase induction motor where we give i/p supply & how its working ?

how we calculate the motor rating of pump for water suction ?its any formula for that plz give thank u

what is meant by excitation current & armature current ? where its produce & how we can calculate ?

what is the working principle of dc motor & its application ?

what is the difference between brush & brushless dc motor explain its operation ?

why rating of motor in HP ?

What are the methods used to improve powerfactor ?

what is the advantage of DC Motor over AC motor & Where its applicable ?

Torrent Power,

iam interesting to design the control panel for 3 phase pump motors by controling single phase switches.iam plan to use fuse,contactor & relay for motor protection .how can i select the voltage & amps rating for fuse,contactor & relay plz guide me .if anybody clarify my doubt means it will more helpful for my future .

how we can varying the speed of dc motor ?

how can we calculate ct ratings ?its any formula ?

how many types in CT & define it ?

what is the difference between squirrel cage & slip ring induction motor by construction & working principle ?

Sail,