What is the range of the air gap density for salient pole machines?(a) 0.52-0.65 Wb per m^2(b) 0.5-0.6 Wb per m^2(c) 0.54-0.65 Wb per m^2(d) 0.44-0.65 Wb per m^2This question was posed to me in a national level competition.This intriguing question originated from Synchronous Machines Output Equation in chapter Design of Synchronous Machines of Design of Electrical Machines

What is the range of the air gap density for salient pole machines?(a)

1.	What is the range of the air gap density for salient pole machines?(a) 0.52-0.65 Wb per m^2(b) 0.5-0.6 Wb per m^2(c) 0.54-0.65 Wb per m^2(d) 0.44-0.65 Wb per m^2This question was posed to me in a national level competition.This intriguing question originated from Synchronous Machines Output Equation in chapter Design of Synchronous Machines of Design of Electrical Machines
Answer» Right CHOICE is (a) 0.52-0.65 WB per m^2 Easiest explanation: The RANGE of air gap density for SALIENT POLE machines is 0.52-0.65 Wb per m^2. The range of air gap density for turbo-alternators is 0.54-0.65 Wb per m^2.

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