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प्रश्न
What energy conversion takes place during the working of a d c motor?
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उत्तर
Electrical energy to mechanical energy.
संबंधित प्रश्न
How will you make an iron bar electromagnet? Draw a diagram showing the polarities of the electromagnet?
Fill in the blanks by writing (i) Only soft iron, (ii) Only steel, (iii) Both soft-iron and steel for the material of core and/or magnet.
Electric bell ______.
Complete the following sentence :
On reserving the direction of current in a wire, the magnetic field produced by it gets _____.
Describe a simple Experiment to demonstrate that there Exists a magnetic field around a current-carrying conductor.
A straight current-carrying conductor is kept in a magnetic field. It Experiences a force. State three factors on which the magnitude of force Experienced by the conductor depends. Under what condition will the conductor Experience no force?
Why is soft iron generally used as the core of the electromagnet?
What will be the effect on the working of an electric bell if instead of a direct current an alternating current is used?
State three factors which govern the speed of rotation of an electric motor.
State the energy change that takes’place in a D. C. motor.
State the principle of a D. C. motor.
