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प्रश्न
What is an electric motor?
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उत्तर
Electric motor : An electric motor is a device which converts the electrical energy into the mechanical energy.
संबंधित प्रश्न
State two ways of magnetising an iron piece?
Name and state the rule by which polarity at the ends of a current carrying solenoid is determined.
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 _____.
State the two properties of the magnetic lines of force around a circular coil.
State the purpose of the iron core.
How does a magnetic field set up by a solenoid change when strength of current in the solenoid is decreased?
State the condition when an electric charge can give rise to a magnetic field.
State the position of armature coil relative to the direction of magnetic field, in a D. C. motor when the deflecting couple acting and the coil is minimum.
State the function of a split ring in D.C. motor.
