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Write shorte note on Carbon.
Carbon: The rate of commutator wear in electrical machines is greatly decreased by using brushes made of carbon. Carbon (C) is also used in automatic voltage regulators for making the pressure sensitive pile resistors. It is used for making arc welding electrodes, variable and fixed resistors for light currents and contacts of specific classes of dc switch gear that are subjected to arcing. The resistance temperature coefficient of carbon is negative.
Mathematical relationship between the induced e.m.f and the network Faraday noted that the e.m.f induced in a loop is proportional to the rate of change of magnetic flux by it:
Considering the circuit shown in Figure (a), find the state of operation and operating point if the BJT has β = 80 and other typical values of a silicon BJT at room temperature.
charges of +2q and -4q are fixed a distance d apart as in figure_2(a).find electric field at the point A ,B and C (b) sketch roughly the electric field lines.
Q. Show the Frequency response of Rc Coupled Amplifier? 1. At low frequency i.e,less than 50 Hz reactance of Cc is going high hence same part of the signal will pass from one s
Q. Find the rate of information transmission? If the time occupied in transmitting each binary digit is 1 µs, find the rate of information transmission if 1 baud is equal to 1
Self-inductance and the induced e.m.f Inductance is the name given to the property of a circuit whereby there is an e.m.f induced into the circuit by alter of flux linkages pro
Q A beam containing two types of charged particles is moving from A to B. Particles of type I with charge +3q, and those of type II with charge -2q (where -q is the charge of an el
With respect to serial communication define the half duplex. Half Duplex Transmission: A channel of half duplex can send and receive, but not at same time. It's like a one-la
Question: a) Describe five advantages of LED lighting over conventional incandescent lighting. b) State two impairments that reduces the radiant flux of a surface-emitting
Q. Explain Multiplexing Systems? A multiplexing system is one in which two or more signals are transmitted jointly over the same transmission channel. There are two commonly us
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