What is the relation of the wire cross-section with respect to the armature resistance?(a) wire section is directly proportional to the armature resistance(b) wire section is indirectly proportional to the armature resistance(c) wire section is directly proportional to the square of the armature resistance(d) wire section is indirectly proportional to the square of the armature resistanceI had been asked this question during an interview for a job.The above asked question is from Design Steps and Considerations in chapter Design of Permanent Magnet (PM) DC Motors of Design of Electrical Machines

What is the relation of the wire cross-section with respect to the arm

1.	What is the relation of the wire cross-section with respect to the armature resistance?(a) wire section is directly proportional to the armature resistance(b) wire section is indirectly proportional to the armature resistance(c) wire section is directly proportional to the square of the armature resistance(d) wire section is indirectly proportional to the square of the armature resistanceI had been asked this question during an interview for a job.The above asked question is from Design Steps and Considerations in chapter Design of Permanent Magnet (PM) DC Motors of Design of Electrical Machines
Answer» Correct option is (a) wire section is DIRECTLY PROPORTIONAL to the ARMATURE resistance For explanation: The 10th design STEP of the PMDC motor is the calculation of the wire cross section. The wire cross section is directly proportional to the armature resistance.

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