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
A balanced load is one for which all the impedances are equal FALSE TRUE Correct answer: 2. TRUE
The role of a conservator in transformer is to Protect the transformer from damage when oil expends due to heating Provide fresh air for cooling the transformer Supply cooling oil to transformer in time of need None of these Correct answer: 1. Protect the transformer from damage when oil expends due to heating
The term ‘squirrel-cage’ applies to a type of three-phase ac motor FALSE TRUE Correct answer: 2. TRUE