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Electric Motor:
A device, which converts electric energy into mechanical energy is known as Electric Motor.
Factors on which the speed of Rotation of Motor Depends:
The speed of rotation of motor depends on the following factors.
1. Magnitude of current passing by the motor.
2. Strength of magnetic field.
3. Number of turns in the coil of the motor.
4. Permeability of its armature.
Dc machine consists of the following parts: Field system: The object of the field system is to make a uniform magnetic field, within which the armature rotates. It having of
Characteristics of a Transmitted Pulse The below animation depicts the boundary behavior of a pulse that is moving along a less dense incident and medium towards that is approa
An electron and a proton are moving at the similar speed in circular paths in the similar uniform magnetic field. The radius of the path of the proton is one of the following.
Define Frozen Solid (Moscow Phys-Tech)? Evaluation how long it will take for a small pond of average depth D=0.5 m to freeze entirely in a very cold winter, when the
It describes the behaviour of a collection of a particle N(E) with gives energy through N(E)α exp(-E/KT) where K is Boltzmann constant. It can be explained as a collection of
Hard Ferromagnetic Substances: Those substances that do not lose their magnetism or removing from magnetic field are known as hard magnetic substance such as steel.
(UNIFORM VELOCITY) (i) When instantaneous velocity and average velocity of a body are equivalent, then the body moves with uniform velocity. (ii When instantaneous velocity
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In 1993, Ileana Salvador of Italy walked 3.0 km in under 12.0 min. Suppose that during 115 m of her walk Slavador is observed to steadily increase her speed from 4.20 m/s to 5.00 m
Explain power of a lens. What is the principle of an optical fibre? What is a thin prism? Describe angular dispersion between two colours for a prism.
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