EASY
10th ICSE
IMPORTANT
Earn 100

What is the function of a transformer?

Important Questions on Electromagnetism

EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 10 - Electromagnetism>QUESTIONS>Q 10
Can transformer work with d.c.? Explain.
EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 10 - Electromagnetism>QUESTIONS>Q 11
What is step-up transformer? Where it is used?
EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 10 - Electromagnetism>QUESTIONS>Q 12
What is step-down transformer? Where it is used?
EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 10 - Electromagnetism>QUESTIONS>Q 13
Define the transformation ratio of a transformer.
EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 10 - Electromagnetism>QUESTIONS>Q 14
For a transformer r=12, Is it a step-up or step-down transformer?
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 10 - Electromagnetism>QUESTIONS>Q 15
A transformer (efficiency100%) is connected to 220 V, 1.1 kW a.c. supply. Its transformation ratio is 0.05. What is the primary to secondary turn ratio? What are output potential and output current?
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 10 - Electromagnetism>QUESTIONS>Q 16

The figure given below shows a transformer. Name the type of this transformer. What is its transformation ratio? What is the output potential obtained from this transformer?

Question Image

MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 10 - Electromagnetism>QUESTIONS>Q 17
What type of energy losses are there in a transformer? How you can minimise these losses?