Question 1 of 10
In a Star (Y) connection, how are the windings connected?
In a Star connection, similar ends of the three coils are connected together to form the neutral point.
Question 2 of 10
What is the relationship between line voltage (V_L) and phase voltage (V_PH) in a Star (Y) connection?
In a Star connection, the line voltage is ?3 times the phase voltage.
Question 3 of 10
What is the phase angle between line voltages in a Star connection?
Line voltages in a star connection are 120 degrees apart.
Question 4 of 10
What is the relationship between line current (I_L) and phase current (I_PH) in a Star (Y) connection?
In a Star connection, the line current is equal to the phase current.
Question 5 of 10
What is the phase shift between the line voltage and the corresponding phase voltage in a Star (Y) connection?
The line voltage leads the corresponding phase voltage by 30 degrees.
Question 6 of 10
Which connection is generally preferred for AC power distribution?
Star connection is the most preferred system for AC power distribution.
Question 7 of 10
If a balanced symmetrical load is connected across a three-phase voltage system in parallel, what is the vector sum of the three currents flowing in the neutral wire?
The vector sum of the three currents in the neutral wire is zero if a balanced load is connected.
Question 8 of 10
What is the formula for calculating total active or true power (P) in a Star (Y) connected three-phase system?
All the mentioned formulas are used to calculate the power.
Question 9 of 10
What is the neutral point in a Star (Y) connection also known as?
The common point where the coils are connected is called the neutral or star point.
Question 10 of 10
In a Star connection, the angle between the line current and the respective line voltage is:
The angle between line currents and respective line voltages are (30°+?), i.e. each line current is lagging (30°+?) from the corresponding line voltage.
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