Transformers

Author:Embibe Experts
12th Chhattisgarh Board
IMPORTANT

Transformers: Overview

This topic deals with the concepts related to alternating current. It explains the arrangement of winding of primary and secondary coils with a transformer. It also discusses the reasons behind small energy loss.

Important Questions on Transformers

EASY
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Alternating Current>Transformers> Q 1

The teacher of Harshit's school took the students on a study trip to a power generating station, located nearly away from the city. The teacher explained that electrical energy is transmitted over a long distance to their city, in the form of alternating current (AC) raised to a high voltage. At the receiving end in the city, the voltage is reduced to operate the devices. As a result, the power loss is reduced. Harshit listened to the teacher and asked questions about how the AC is converted to a higher or lower voltage:

Write two values each shown by the teacher and Harshit

MEDIUM
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Alternating Current>Transformers> Q 2

The teacher of Harshit's school took the students on a study trip to a power generating station, located nearly  away from the city. The teacher explained that electrical energy is transmitted over a long distance to their city, in the form of alternating current (AC) raised to a high voltage. At the receiving end in the city, the voltage is reduced to operate the devices. As a result, the power loss is reduced. Harshit listened to the teacher and asked questions about how the AC is converted to a higher or lower voltage:

State causes for power dissipation in this device.

EASY
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Alternating Current>Transformers> Q 3

The teacher of Harshit's school took the students on a study trip to a power generating station, located nearly 200 km away from the city. The teacher explained that electrical energy is transmitted over a long distance to their city, in the form of alternating current (AC) raised to a high voltage. At the receiving end in the city, the voltage is reduced to operate the devices. As a result, the power loss is reduced. Harshit listened to the teacher and asked questions about how the AC is converted to a higher or lower voltage:

Name the device used to change the alternating voltage to a higher or lower value.

EASY
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Alternating Current>Transformers> Q 4

Describe a transformer on the basis of the following points: Any two applications.
 

HARD
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Alternating Current>Transformers> Q 5

Describe a transformer on the basis of the following points : Working method and principle

HARD
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Alternating Current>Transformers> Q 6

Describe a transformer on the basis of the following points :Types and labelled diagram of transformer