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Functions of the commutator:
A commutator is a device, which under certain conditions changes ac into dc and vice versa.
The commutator is a form of rotating switch placed between the armature and external circuit and so arranged that it reverses the links to the external circuits at the instant of every reversal of the current in the armature coil. Thus it changes induced alternating currents in armature coils into direct currents in the external load circuits.
what is the meaning of heat capacity
As regards cases involving the application of the Biot-Savart Law to calculate the magnetic field due to an electric current which of the following statements about why it is relat
Jason and his sister, Tara, are riding bicycles. Jason tries to catch up to Tara, who has a10.0-s head start .
What does held nucleons together in a nucleus? Nuclear force. It is the nuclear force which fasten the nucleons together and is responsible for the stability of nucleus.
A student finds that a particle whose life is micro-sec (µ- sec) moves with a velocity of 2.7 x 108 m/sec. i) What will be its lifetime as measured by another observer in the labor
Explain Stokes theorem in vector calculus?
How do you calculate tensile strength? Tensile strength isn't really measured; it's calculated. It is explained as the point at which a sample of material fails when subjected
Q. The resistance of a nichrome wire at 0oC is 10 Ω. If the temperature coefficient of resistance is 0.004/ o C, find its resistance at boiling point of water. Comment on the resul
Given the following image, 1 2 1 1 2 0 0 1 5 1 0 1
Mica is a (A) Dielectric material. (B) Insulating material. (C) Magnetic material. (D) Both insulating and dielectric material. Ans: Mica is a both insulating and
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