Question 255Electricity/Electronics - QMED70% to pass
In terms of voltage potential and current sources, how are shunt wound, series wound, and compound-wound DC motors designed to operate?
AI Explanation
The correct answer is D) constant potential, variable current DC sources.
This is because the design of shunt wound, series wound, and compound-wound DC motors determines their behavior with respect to voltage potential and current sources. Shunt wound motors operate on a constant potential (voltage) DC source, while the current through the motor windings can vary. Series wound motors also operate on a constant potential DC source, but the current through the windings varies based on the load. Compound-wound motors are a combination of shunt and series windings, also operating on a constant potential DC source with variable current.
The other options are incorrect because variable potential sources (A and C) do not accurately describe the operation of these DC motor types, and constant current sources (B) are not the typical power source for these motors.
Related Questions
#253 If overloading an electric motor becomes necessary in an emergency situation, what should be done to prevent damage to the motor while allowing sustained operation? #254 What is the name of the DC motor speed control method utilized as shown in figure "B" of the illustration? Illustration EL-0101 #256 As shown in the illustrated DC machine which is configured as a generator, what is the purpose of the interpoles? Illustration EL-0052 #257 What is the function of the interpoles installed in DC motors? #258 What is the item referred to as a pigtail on a DC motor brush rigging?