Question

What is the formula for the field current of the synchronous machines?

(a) field current = current density * area of conductors

(b) field current = current density / area of conductors

(c) field current = current density – area of conductors

(d) field current = current density + area of conductors

I got this question by my college professor while I was bunking the class.

I'd like to ask this question from Design of Field Winding topic in division Design of Synchronous Machines of Design of Electrical Machines

Answer 1

Right choice is (a) field current = current density * area of conductors

Easy explanation: For the calculation of the field current, first the current density is calculated. Next, the area of conductors is calculated and the field current is calculated.