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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.
A ray of light is incident normally on an equilateral prism of refractive index 3/2 calculate devition. Ans) since the prism is equilateral therefore angle of prism is 60 0 =
Describe the principle construction and working of a scintillation counter. With suitable diagram explain various components of a scintillation counting system. Principle Sci
A power boat of mass 500 kg is cruising at a constant speed of 8.9 m/s. The propeller provides a drive force of 765 N. The driver of the boat shuts off the engine, and the boat coa
What is meant by the sensitivity of a potentiometer? A battery E 1 of 4 V and a variable resistance R h are linked in series with the wire AB of the potentiometer. The length
concave grating and rowland''s mounting theory
How to determine the co efficient of viscosity of liquid by capillary flow method?
What are the applications of Neodymium-Yttrium-Aluminium-Garnet Laser? Applications of Neodymium-Yttrium-Aluminium-Garnet Laser: a. Used into materials processing as like we
Why is heavy water used as a moderator? Heavy water is a type of water highly enriched in the hydrogen isotope deuterium. We can conclude the neutron interactions with billiard
State concept of Charging by conducting Charging by conducting - transfer of charge among two objects through contact - objects have similar charge
It is defined as the magnetic lines of force per unit area of the pole face. B=φ/A where φ is the magnetic lines of f
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