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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 ball with an initial momentum of 6.00 kg.m/s bounces off a wall and travels in the opposite direction with a momentum of 4.00 kg.m/s. What is the magnitude of the impulse ac
1. A child pulls a toy car weighing 0.20 kg across a smooth floor by means of a string attached to it. If the string makes an angle of 60° to the floor and the child pulls with a f
Write down Gauss law in electrostatics. get its differential form in vacuum.
Clear definitions of, and rationale for defining variables as explanatory confounding (if required) effect modifying variables (if required) and rationale if the form
how to solve vector quantity, with solutions and drawing
What is the Law of Machines? Machines which are used to lift a heavy load are governed by the "Law of machines", which says that the effort to be applied on the machine (p) is
when a body is thrown upwards, its velocity becomes zero at the highest point. what will be its acceleration at this point?
A box is divided into two parts of equal volume via a partition. The box is thermally insulated from the surroundings. Consider that compartment 1 contains an ideal gas A at P 0 ,
Obtain expression for an optical path difference for formation of circular fringe in Michelson''s interferometer
The neutrons and protons in a stable nucleus are held together by nuclear forces and energy is required to pull them infinitely apart (or the similar energy is released during the
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