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Define Magnetic field
The area around a magnet is known as the magnetic field and it is in this area that the effects of the magnetic force formed by the magnet can be detected. A magnetic field cannot be seen, felt, smelt or heard and thus is difficult to represent. Michael Faraday suggested that the magnetic field could be shown pictorially, by imagining the field to having of lines of magnetic flux, which enables investigation of the distribution and density of the field to be carried out
principle and operation of a 3phace induction motor
The armature of a four-pole dcmachine has a simplex lap wound commutator winding (which has the number of parallel paths equal to the number of poles) with 120 two-turn coils. If t
Variation of Energy Bands with Alloy Composition The band structures of III-V ternary and quaternary compounds modifies as their composition is varied. There
Define Serial In - Parallel Out Shift Registers? For this type of register data bits are entered serially in the same manner as discussed in the last section and the difference
An induction motor takes 350 kW at 0.8 power factor lagging while driving a load. When an overexcited synchronous motor taking 150 kW is connected in parallel with the induction mo
Electromagnetic torque The torque is given by the force on the armature winding multiplied by its radius. Force on a conductor in magnetic field B is: F=B.I.L so, T=B
Q. What do you mean by Noise? In any communication system there are usually two dominant factors that limit the performance of the system: 1. Additive noise, generated by el
Binary Division Similar to multiplication division can be seen multiple subtractions. For example if we have to divide 9 by 4 we can subtract 4 ,2, times until is is
Q. If a feeder circuit-breaker trips, what action is needed? Ans: First isolate the faulty feeder check the faulty area on which fault the breaker was tripped (open circuit,
Q A residence is supplied with a voltage v(t) = 110√2cos120πt Vand a current i(t) = 10√2cos120πt A. If an electricmeter is used tomeasure the average power, find the meter reading,
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