AE-JE Foundation EE :Electrical Machines quiz-1

If a transformer is having equal number of turns at primary and secondary, then transformer is called as_____

For the given circuit, comment on the type of transformer used.

Main function of the conservator in transformer ?

The purpose of oil in a transformer is to

Which of the following statement is/are correct about transformer?

1) Core type transformer require more amount of copper as compared to shell type transformer

2) Size of distribution transformer is smaller as compared to similar power transformer

3) Auto transformer has lower p.u impedance as compared to two winding transformer

4) Shell type transformer is suitable for low voltage and low power applications.

A 100 VA, 120/12 V transformer is to be connected so as to form a step–up transformer. A Primary voltage of 120 V is applied to the transformer. What is the secondary voltage of the transformer?