Question 1 of 10
What is the primary function of a distribution transformer?
Distribution transformers step down the voltage from medium voltage levels (e.g., 11kV) to low voltage levels (e.g., 230V/400V) for residential, commercial, and industrial applications.
Question 2 of 10
On what principle does a distribution transformer operate?
Distribution transformers work based on the principle of electromagnetic induction, as described by Faraday's Law.
Question 3 of 10
What type of connection is typically used for the primary winding of a distribution transformer?
The primary winding of a distribution transformer is typically connected in a Delta (?) configuration.
Question 4 of 10
What voltage is typically supplied to the primary side of the distribution transformer in the example provided?
The article states that the primary winding receives 11kV from the distribution network.
Question 5 of 10
What are the typical output voltages from the secondary winding of a distribution transformer?
The secondary winding supplies both 400V (3-phase) and 230V (single-phase) power.
Question 6 of 10
What is the configuration of the secondary winding of a distribution transformer?
The secondary winding of a distribution transformer uses a Star (Y or Wye) configuration.
Question 7 of 10
Which of the following is typically connected to the neutral point in the secondary winding of a distribution transformer?
The neutral point is bonded to ground.
Question 8 of 10
What is the relationship between the primary and secondary windings in terms of the number of turns and voltage?
The voltage is directly proportional to the number of turns, meaning a higher number of turns results in a higher voltage.
Question 9 of 10
If a transformer has a turns ratio of 27.5, and the primary voltage is 11,000V, what is the approximate secondary voltage?
11,000V / 27.5 = 400V. The turns ratio indicates the voltage step-down.
Question 10 of 10
In a 3-phase, 4-wire system supplied by the secondary side of a distribution transformer, what does the fourth wire represent?
In a 3-phase, 4-wire system, the fourth wire is the neutral conductor, which is essential for providing single-phase power (230V) and ensuring system safety.
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