Check all the correct statements on AC machines (induction and synchronous) below. O The current flowing in the rotor of an induction machine is AC O Locking an induction machine's rotor in place with a mechanical brake while supplying AC to the statorcreates a slip of 0% and acts as if the rotor electrical circuit was open / not connected. O In synchronous machines the rotor flux position can be determined by measuring the physical angular position of the rotor. O A change in the mechanical speed at which a synchronous generator is being driven directly affects its electrical output frequency. O A wound field synchronous generator's output voltage can be influenced by adjusting the current in the field coil. O Synchronous motors require a variable frequency drive to start up from zero speed because they do not generate starting torque when supplied directly with a high frequency while they are still at standstill / zero rpm.
Check all the correct statements on AC machines (induction and synchronous) below. O The current flowing in the rotor of an induction machine is AC O Locking an induction machine's rotor in place with a mechanical brake while supplying AC to the statorcreates a slip of 0% and acts as if the rotor electrical circuit was open / not connected. O In synchronous machines the rotor flux position can be determined by measuring the physical angular position of the rotor. O A change in the mechanical speed at which a synchronous generator is being driven directly affects its electrical output frequency. O A wound field synchronous generator's output voltage can be influenced by adjusting the current in the field coil. O Synchronous motors require a variable frequency drive to start up from zero speed because they do not generate starting torque when supplied directly with a high frequency while they are still at standstill / zero rpm.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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Transcribed Image Text:Check all the correct statements on AC machines (induction and synchronous) below.
O The current flowing in the rotor of an induction machine is AC
O Locking an induction machine's rotor in place with a mechanical brake while supplying AC to the statorcreates a slip of 0% and acts as if the
rotor electrical circuit was open / not connected.
O In synchronous machines the rotor flux position can be determined by measuring the physical angular position of the rotor.
O A change in the mechanical speed at which a synchronous generator is being driven directly affects its electrical output frequency.
O A wound field synchronous generator's output voltage can be influenced by adjusting the current in the field coil.
O Synchronous motors require a variable frequency drive to start up from zero speed because they do not generate starting torque when
supplied directly with a high frequency while they are still at standstill / zero rpm.
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