1.a. Which one of the following statements is true about a dual-voltage capacitor-start motor? A. The auxiliary-winding circuit operates at 115 volts on 115-volt and 230-volt circuits. B. The main windings are identical to obtain the same starting torques on 115-volt and 230-volt circuits. C. The direction of rotation is reversed by interchanging the leads of one main winding. D. The main windings are connected in series for 115-volt operation. 1.b. An auxiliary phase winding is used in a single-phase fractional horsepower motor to A. decrease flux density. B. decrease motor heating. C. reverse motor rotation. D. increase motor speed.

1.a. Which one of the following statements is true about a dual-voltage capacitor-start motor? A. The auxiliary-winding circuit operates at 115 volts on 115-volt and 230-volt circuits. B. The main windings are identical to obtain the same starting torques on 115-volt and 230-volt circuits. C. The direction of rotation is reversed by interchanging the leads of one main winding. D. The main windings are connected in series for 115-volt operation. 1.b. An auxiliary phase winding is used in a single-phase fractional horsepower motor to A. decrease flux density. B. decrease motor heating. C. reverse motor rotation. D. increase motor speed.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter33: Single-phase Motors

Section: Chapter Questions

Problem 16RQ: When a repulsion-start induction-run motor reaches about 75% of rated full-load speed, it stops...

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