QUESTIONS WITH ANSWERS

      1.Can harmonic produce in the dc circuit?
                                                          A harmonic can exist on both AC and DC power.
     2.Which motor is used in electric train and traction?

                            Motor  3phase induction motor and dc series motor is used in electric train because both                 motors provide high starting torque

     3.What is B.H.P in 3 phase induction motor?

                             BHP stands for 'brake horsepower', and simply means it is describing the output, rather than the input, power of the machine. Although a motor's output power is expressed in horsepower in North... 

       

      4.Why is 3 phase motor neutral not used?

                                A three phase motor does not need a neutral because it has two 'phase' leads running it at any given point in time. The electricity comes in on one phase lead and goes out on the other phase...