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Define permanent magnet
A permanent magnet is a piece of ferromagnetic material (like as iron, nickel or cobalt) which has properties of attracting several pieces of these materials. A permanent magnet will position itself in a north and south direction when liberally suspended. The north-seeking end of the magnet is known as the north pole, N, and the south-seraching end the south pole, S.
Explain the Construction of Synchronous Machines? Basically all synchronous machines require a DC excited field winding in order to produce magnetic flux. For majority of machi
Why is the signal first attenuated and then amplified?
Output Characteristics The output or drain characteristic of N - Channel power MOSFET. When gate is made positive with respect to the source an N type channel is formed
Q. Consider an ampli?er as a voltage source with an internal resistance of 72 . Find the turns ratio of the ideal transformer such that maximum power is delivered when the ampli?e
Fermi Level Electrons in solids obey Fermi-Dirac (FD) statistics. This statistics accounts for the indistinguishability of the electrons, their wave nature, and the
Q. For the circuit shown in Figure, obtain: (a) z-and y-parameters; (b) Transfer function I 2 /I 1 when V 2 = 0.
Q. A single-phase, two-winding, 10-kVA, 440:110- V, 60-Hz transformer is to be connected as an autotransformer to supply a load at 550 V from a 440-V supply. Draw a schematic diagr
1- Phase Full Bridge inverter will RL Load For a resistive load R the load current wave form will be identical with load voltage wave form and feedback diodes will
Energy band: the energy band picture for Ii an- type, and Iii ap - type semiconductor Indicate the position for, the donor and acceptor levels. Sol.(a)
Q. Explain the working principle of a TRIAC. "Triac" is an abbreviation for three terminal ac switch. 'Tri'-indicates that the device has three terminals and 'ac' indicates tha
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