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Q. Comment brie?y on the following:
(a) Why are waveguides not used at low frequencies?
(b) Why are open-wire lines not generally used as guiding structures at very high frequencies?
(c) What is the velocity of wave propagation in a Te?on (εr = 2.1) coaxial transmission line?
Using Bode plot calculate (a) Phase margin (b) Gain margin (c) Stability of closed loop system. The open transfer function of the system is t=30/(s+2)/(s+3)Using Bode plot calcula
Equivalent Circuit of a Synchronous Machine A review of the material about elementary synchronous machines is very helpful at this stage to recall the principles of operation f
Power in Balanced Three-Phase Circuits The total power delivered by a three-phase source, or consumed by a three-phase load, is found simply by adding the power in each of the
Q. What is current gain in RC coupled amplifier? Current gain is the ratio of the output current to the input current. we represent it as A i . A i =I o /I s it can
Properties of a good heat sink For maximum efficiency, a heat sink should be 1)Be in good thermal contact with the transistor case 2)Have the largest surface area 3)Be
a) With the help of a neat and clean sketch illustrate the difference between relative and absolute motion measuring device. b) Discuss electromechanical methods for calculating
Logically AND the contents of memory Contents of memory location, whose address is specified by HL register pair are logically AND with the contents of the accumulator. The
What is meant by Wait State? This state is used by slow peripheral devices. The peripheral devices can transmitted the data to or from the microprocessor by using READY input l
why is detecting the time of islanding relevant?
Q. Open-circuit and load characteristics of generator? The open-circuit and load characteristics of a separately excited dc generator, along with its schematic diagram of conne
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