Introduction To Transformers (A)

Question 1

A tapped primary, step-down transformer is generally designed for?

Answer 1

Compensating for slightly lower or higher primary voltages.

Question 2

Which type of transformer is used to step-down a high line voltage to a lower residential consumer voltage

Answer 2

Distribution

Question 3

The basic operation of a transformer is based upon the principle of:

Answer 3

Electromagnetic induction.

Question 4

Which material is the basis for a transformers core construction

Answer 4

Soft iron

Question 5

The H1 terminal of an additive transformer viewed from the low-voltage side is located at the :

Answer 5

Upper left-hand corner

Question 6

The core of a transformer consists of solid iron? T or F

Answer 6

False

Question 7

When compared from primary to secondary, the turns ratio would be equal to the:

Answer 7

Voltage Ratio

V/t ratio

Question 8

240/480v - 120-240

What is the voltage rating of the H windings

Answer 8

240V

Question 9

The H1 terminal always has the same Instantaneous polarity as the?

Answer 9

X1 Terminal

Question 10

The coil of a transformer which is energized from a source of alternating voltage is known as the ?

Answer 10

Primary Winding

Question 11

The winding that is always connected to the supply (not load) side of the transformer

Answer 11

Primary winding