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The rotor of a 4 pole generator is wound with a 100 turn coil. If the flux per pole is 4.5mWb and the rotor turns at a speed of 1800 rpm, determine
(a) The frequency of the induced voltage in the rotor.
(b) The maximum value of the induced voltage.
(c) The effective value of the induced voltage.
A three phase generator is producing power for a balanced load. Each phase provides an rms voltage of 690 V and an rms current of 1000 A. The angle between the voltage and current in each phase is 20 degrees.
Compare the field at the center of a Helmholtz coil pair and at the center of a solenoid, if both use the same total length of wire and carry the same current.Take the solenoid length equal to the spacing between the Helmholtz coils
suppose that another FM station is in the vicinity is broadcasting at 98.1 MHz. determine the relative value of the voltage across the resonant circuit at this frequency compared with that at 98 MHz, assume that the current produced by both signal..
A) Design the counter assuming the outputs come directly from JK flip-flops. B) and design the counter assuming a two-stage binary counter is used with the JK flip-flop output decoded
A balanced star load of 8+j6 O per phase is connected to three-phase, 230 V supply. Find the line current, power factor, power, reactive VA and total VA.
a. Evaluate X(s) and specify its region of convergence. b. Determine the values of the finite numbers A and t0 such that the Laplace transform G(s) of g(t) = Ae^âˆ'5tu(âˆ't âˆ' t0)
Design an inverting singe stage low pass filter with gain = 40 dB, Rin = 10 kΩ , corner frequency of 50 Hz. Determine the max and min gain and the corne frequency for the component tolerances of 5%/ Plot gain vs frequency (Hz) with frequency on a ..
A 250hp, 500v dc shunt motor draws a nominal field current of 5A under rated load. The resistance is 90ohms. Calculate the ohmic value and power of the series resistor needed so that the field current drops to 4.5A
If we have a 600ohm transmission line terminated with a 1200ohm resistor, how long must the transmission line be if the input impedance is purely real?
what is the probability of rolling at least one 6 in rolling six fair dice at one time. what is the probability of rolling at least two 6s in rolling 12 fair dice at one time.
A storage tank has a Diameter of 20ft and a height of 10ft. The output volumetric flow from this tank is given by fout(t)=2h(t) where h(t) is the height of the liquid in the tank. At a particular time the tank is at steady state with an input flow..
A standard 12-V car battery has an ampere-hour rating of 30 Ah, whereas a heavy-duty battery has rating of 51 Ah. Calculate the ratio of available energy and the percentage increase in available current for starting.
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