Question

What is the formula for the area of cross section of armature conductors?

(a) area of cross section = current per conductor * current density in the armature conductors

(b) area of cross section = current per conductor + current density in the armature conductors

(c) area of cross section = current per conductor – current density in the armature conductors

(d) area of cross section = current per conductor / current density in the armature conductors

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Asked question is from Armature Design in division Design of Synchronous Machines of Design of Electrical Machines

Answer 1

The correct answer is (d) area of cross section = current per conductor / current density in the armature conductors

Easiest explanation: For obtaining the area of the cross section the current per conductor is calculated. Next the current density is calculated and the ratio of both gives the current density of the area of cross section.