What is the range of the transformation ratio in the pole machines?(a) 0.05-0.1(b) 0.1-0.2(c) 0.1-0.25(d) 0.3-0.4I got this question in unit test.This intriguing question comes from Design of Small Universal Commutator Motors in chapter Design of Small Electrical Machines, Starters and Field Regulators of Design of Electrical Machines

What is the range of the transformation ratio in the pole machines?(a)

1.	What is the range of the transformation ratio in the pole machines?(a) 0.05-0.1(b) 0.1-0.2(c) 0.1-0.25(d) 0.3-0.4I got this question in unit test.This intriguing question comes from Design of Small Universal Commutator Motors in chapter Design of Small Electrical Machines, Starters and Field Regulators of Design of Electrical Machines
Answer» Correct ANSWER is (c) 0.1-0.25 The best I can explain: The TRANSFORMATION ratio in 2 POLE motors is 0.1-0.25. The transformation ratio in the 4 pole motors is 0.05-0.1.

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