English

What Type of Current is Transmitted from the Power Station? - Physics

Advertisements
Advertisements

Question

What type of current is transmitted from the power station?

Advertisements

Solution

An alternating current is transmitted from the power station.

shaalaa.com
  Is there an error in this question or solution?
2015-2016 (March) Science Paper 1

RELATED QUESTIONS

State the principle on  which transformer works.


A transformer converts 240 V AC to 60 V AC. The secondary has 75 turns. The number of turns in primary are _______.

(A) 600

(B) 500

(C) 400

(D) 300

 


Name the phenomenon ?


Name two kind of energy loss in a transformer. How is it minimized?


In an ideal transformer, an output of 66 kV is required when an input voltage of 220 V is available. If the primary has 300 turns, how many turns should the secondary have?


A step-down transformer connected to the main supply of 220 V is used to operate 11V,88W lamp. Calculate

  1. Voltage transformation ratio and
  2. Current in the primary

The transformer voltage induced in the secondary coil of a transformer is mainly due to ______.

Read the following paragraph and answer the question:


Long distance power transmissions

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.

Which of the following statement is true?


The primary coil having NP turns of an ideal transformer is supplied with an alternating voltage VP. Obtain an expression for the voltage VS induced in its secondary coil having NS turns.


For what purpose are the transformers used?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×