The magnitude of each line current in a Y-connected circuit is Equal to the corresponding phase current One-third the phase current Three times the corresponding phase current Zero Correct answer: 1. Equal to the corresponding phase current
In case of a ∆-connected source feeding a Y-connected load Each phase voltage equals the corresponding load voltage Each phase voltage equals the difference of the corresponding load voltages Each phase voltage is 60° Ωut of phase with the corresponding load voltage Each phase voltage is one-third the corresponding load voltage Correct answer: 2. Each … Read more
A three-phase ∆-connected generator is driving a balanced load such that each phase current is 12 A in magnitude. When Iθa = 12 ∠30° A, the polar expressions for the other phase currents are Iθb = 12 ∠120° A, Iθc = 12 ∠30° A Iθb = 12 ∠150° A, Iθc = 12 ∠-90° A Iθb … Read more
The correct statement regarding a Y-Y source/load configuration Line current and the load current are in phase and both are out of phase with the phase current Phase current and the line current are in phase and both are 120° out of phase with the load current Phase current, the line current and the load … Read more
The phase voltages in a certain three-wire Y-connected generator are 2 kV. The magnitudes of the line voltages are 2,000 V 3,464 V 333 V 6,000 V Correct answer: 2. 3,464 V
Alternator is an electromechanical ac generator True False Correct answer: 2. FALSE
In case of a Y-connected circuit, between each line voltage and the nearest phase voltage, there is a phase angle of 0° 120° 30° 60° Correct answer: 3. 30°
A simple two-phase generator comprises of two conductive loops that are separated by 90°, rotating in a magnetic field FALSE TRUE Correct answer: 2. TRUE
In 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 0.125 0.375 Correct answer: 2. 0.375
Polyphase circuits are characterized by two or more sinusoidal voltages, each having a different phase angle FALSE TRUE Correct answer: 2. TRUE