Home
Class 12
PHYSICS
(a) Draw a labelled diagram of a step-u...

(a) Draw a labelled diagram of a step-up transformer. Obtain the ratio of secondary to primary voltage in terms of number of turns and currents in the two coils.
(b) A power transmission line feeds input power at 2200 V to a step-down transformer with its primary windings having `3000` turns. Find the number of turns in the secondary to get the power output at `220 V`.

Text Solution

Verified by Experts

Labelled diagram of a step up transformer Deriveation of ratio of seconary and primary voltage.
Promotional Banner

Topper's Solved these Questions

  • CBSE BOARD EXAMNATION PAPER (2017 )

    CBSE COMPLEMENTARY MATERIAL|Exercise SECTION C|18 Videos
  • 2018 QUESTION PAPER (DELHI )

    CBSE COMPLEMENTARY MATERIAL|Exercise SECTION E|15 Videos
  • CBSE EXAMINATION PAPER - 2016

    CBSE COMPLEMENTARY MATERIAL|Exercise SECTION - E|17 Videos

Similar Questions

Explore conceptually related problems

A power tansmission line feeds input input power at 2200 V to a step down transformer with its primary windings having 3000 turns. Find the number of turns in secondary to get the power output at 220 V.

A power transmission line feeds input power at 2400 V to a step down transformer with its primary windings having 4000 turns. What should be the number of turns in the secondary windings in order to get output power at 240 V?

A power transmission line feeds input power at 2300 V to a step down trnasformer with it primary windings having 4000 turns. What should be the number of turns in the seconday windings in order to get output power at 230 V?

Case study : Read the following paragraph and answers the questions : The large-scale transmission and distribution of electrical energy over long distances is done with the use of transformers. The voltage output of the generator is stepped-up. It is then transmitted over long distances to an area sub-station near the consumers. There the voltage is stepped down. It is further stepped down at distributing sub-stations and utility poles before a power supply of 240 V reaches our homes. A power transmission line feeds input power at 2300 V to a step down transformer with its primary windings having 4000 turns. The number of turns in the secondary in order to get output power at 230 V are

In a step - down transformer the input voltage is 22kV and the output voltage is 550V The ratio of the number of turns in the secondary to that in the primary is .

A power transmission line feeds input power at 2400V to a step-down transformer and which delivers power at 240V with its primary windings having 5000 turns . If the current in the primary coil of the transformer is 5A and its efficiency is 80%, then what is the output current (in A)?