Question 46Electricity/Electronics - Assistant Engineer70% to pass
What is the main purpose of the auxiliary winding on a split-phase, single-phase motor?
AI Explanation
The correct answer is A) provide starting torque.
The main purpose of the auxiliary winding on a split-phase, single-phase motor is to provide additional starting torque. The auxiliary winding is designed to produce a phase shift between the main winding and the auxiliary winding, which generates a stronger starting torque to overcome the initial inertia of the motor. This allows the motor to start and reach its operating speed more efficiently.
The other options are incorrect because: B) keeping the motor running if the main winding fails is the purpose of a capacitor-start motor, not a split-phase motor; C) increasing the starting current is not the primary purpose of the auxiliary winding; and D) limiting the starting voltage is not related to the function of the auxiliary winding.
Related Questions
#44 What is the main function in the use of a capacitor for starting a single phase motor? #45 What are the operational characteristics of the split phase motor shown in figure "A" of the illustration? Illustration EL-0215 #47 What is the primary means by which an electrical maintenance worker is protected from electrical hazards while performing work on an electrical circuit? #48 At a minimum threshold, how many milliamps of current through the body produces a condition where most people would experience respiratory paralysis and be unable to breathe while still in contact with the energized conductor? #49 Which of the following devices would be forbidden to use as a primary means of electrical isolation?