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To calculate the turns per phase in the armature design of an electrical machine, you can use the formula:
[ T = frac{E times 10^8}{4.44 times f times Phi times K_w} ]
Where:
– (T) is the number of turns per phase,
– (E) is the RMS voltage per phase in volts,
– (f) is the frequency of the AC supply in Hertz,
– (Phi) is the flux per pole in Weber,
– (K_w) is the winding factor (also known as the coil pitch and distribution factor).
This formula is a simplification and assumes a sinusoidal flux distribution. The actual design process can be more complex depending on the specific requirements and constraints of the electrical machine being designed.
Answer: a
Explanation: For obtaining the turns per phase, the voltage per phase is obtained along with the parallel paths per phase. Next the winding space factor is calculated and the substitution in the formula gives the turns per phase.