Advertisements
Advertisements
प्रश्न
What is dynomo (a.c. generator)? State the principle on which it works.
Advertisements
उत्तर
Dynamo (or a.c. generator) is a device which converts mechanical energy into electrical energy. It works on the principle of electromagnetic induction.
संबंधित प्रश्न
Suppose you are given a long bar magnet and you are asked to break it into four small magnets. Draw diagrams showing the polarities of each broken part.
State three uses of an electromagnet?
Answer the following in short.
Name a few common appliances that use electromagnets.
How does a magnetic field set up by a solenoid change when number of turns are increased?
State two advantages of an electromagnet over a bar magnet.
State three factors which govern the speed of rotation of an electric motor.
What energy conversion takes place during the working of a d c motor?
State the principle of a D. C. motor.
State and explain Maxwell’s Cork Screw Rule.
Write the answer in your words.
How is an electromagnet made?
