Electrical Engineering - Three-Phase Systems in Power Applications
Exercise : Three-Phase Systems in Power Applications - General Questions
- Three-Phase Systems in Power Applications - General Questions
- Three-Phase Systems in Power Applications - True or False
16.
In a certain Y-Y system, the source phase currents each have a magnitude of 9 A. The magnitude of each load current for a balanced load condition is
17.
A three-phase 
-connected generator is driving a balanced load such that each phase current is 12 A in magnitude. When I θa = 12 
30° A, what are the polar expressions for the other phase currents?
-connected generator is driving a balanced load such that each phase current is 12 A in magnitude. When I θa = 12 30° A, what are the polar expressions for the other phase currents?I θb = 12 150° A, I θc = 12–90° A
150° A, I θc = 12–90° AI θb = 12120° A, I θc = 1230° A
120° A, I θc = 1230° AI θb = 1230° A, I θc = 12120° A
30° A, I θc = 12120° AI θb = 1290° A, I θc = 1290° A
90° A, I θc = 1290° A18.
In a Y-connected circuit, between each line voltage and the nearest phase voltage, there is a phase angle of
19.
The most common type of ac motor is the
20.
In a Y-connected source feeding a -connected load,
-connected load,each phase of the load has one-third of the full line voltage across it
each phase of the load has two-thirds of the full line voltage across it
each phase of the load has the full line voltage across it
each phase of the load has a voltage across it equal to 
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