Question

8)
What is correct for real transformer?
(AS P>P
App
(B) P;<P
Jes Pi = P.
(D) All are correct​

Answer 1

Answer:

A transformer is a passive electrical device that transfers electrical energy from one electrical circuit to another, or multiple circuits. A varying current in any one coil of the transformer produces a varying magnetic flux in the transformer's core, which induces a varying electromotive force across any other coils wound around the same core. Electrical energy can be transferred between separate coils without a metallic (conductive) connection between the two circuits. Faraday's law of induction, discovered in 1831, describes the induced voltage effect in any coil due to a changing magnetic flux encircled by the coil.

Answer 2

Answer:

The correct option is Pi > Po.

Because n = Po/Pi < 1

Explanation:

Transformers work on the principle of electromagnetic induction. A transformer convert alternating current from one voltage to another by stepping up or stepping down the voltage. Transformers have two sides. The input side is the primary side and the output side is the secondary side. The efficiency of a transformer is the power loss between input and output. For a real transformer the ratio of output and input  should be less than one.