Question

Please mark your answers to the multiple choice questions and put the final number with correct units for the questions which require calculations. For each question involving calculations, the multiple choice part weights 5 points: correct number (sign/direction) - 9 points; correct units 1 point. Use scratch paper for your calculations but don't submit it. Submit only this file with your answers.

PLEASE INDICATE WHICH LETTER YOU USED TO SOLVE AND THE NUMERICAL ANSWER WITH UNITS!!

Answer 1

Answer:-f) B & C

4. Given, Np=400 Ns =50 VpEROV We know Vp Ne Ng dy GEN as Vs a Vp is Np sy 120 x 50 Hoo V = 15V Hence, output voltage is Isv.

Explanation:-

◆Transformer work only on ac supply because A transformer needs alternating current that will create a changing magnetic field. A changing magnetic field also induces a changing voltage in a coil. This is the basis of how a transformer works: The primary coil is connected to an AC supply.

◆Transformers contain a pair of windings and they function by applying Faraday's law of induction.

1. AC passes through the primaty winding. which creates a varying magnetic flux

2. The magnetic field that results strikes the second winding and generates an AC voltage in that winding i.e electromagnetic induction

In a theoretical ideal transformer, no energy escapes between the circuits, the two circuits couple perfectly with infinitely high magnetic permeability.