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1. Explain why the SCC is linear.
2. Distinguish between Xs (unsaturated) and Xx (saturated). Which one should be used for higher accuracy in predicting the voltage regulation of a synchronous generator.
3. The synchronous reactance of an alternator is not constant over the entire operating range. What is this so? What value would you use?
4. In what manner does an synchronous motor adjust itself to an increasing shaft load?
5. State the assumptions made in the Potier method and the effect they have on the accuracy of voltage regulation as calculated by this method.
can the zener diode be used as a conventional diode? explain your answer and verify with a curve from the curve
The show output of an AM transmitter is connected to a spectrum analyzer (calibrated in dBm) and a broadband Power Meter calibrated in Watts. If the spectrum analyzer show is below.
(a) Give the Boolean function Y . (b) Sketch a PDN directly from the expression for Y. Note that it requires 12 transistors in addition to those in the inverters (c) From inspection of the PDN circuit, reduce the number of transistors to 10
A diesel power station has the following data : - Estimate specific fuel consumption, overall efficiency, and thermal efficiency of engine.
A temperature sensor produces 10 mV for each degree Fahrenheit. Determine the error in temperature reading if 20 mV of noise is added to the sensor output signal when the temperature is 70 degrees.
As the ball rises, it gradually loses kinetic energy as its potential energy increases. At the top of its flight, when its vertical speed goes to zero, all of the kinetic energy has been converted into potential energy.
a power source is giving 12 V to a circuit. In the circuit there is a resistor. Therefore, would the voltage drop 12 V when the charge moves across the resistor making there 0 V in the circuit after the resistor.
Consider a cylindrical cavity of diameter D=100 mm and depth L=50 mm whose sidewall and bottom are diffuse and gray with an emissivity of .6 and are at a uniform temperature of 1500 K. The top of the cavity is open and exposed to surrounding that ..
A 240/40 volt transformer supplies two different secondary loads. One load (a) draws a current of 12 amperes at a lagging power factor of 0.94. The other load (b) draws a current of 12 amperes at a leading power factor of 0.94.
Consider an angle-modulated signal xc(t) = 10 cos{(10^8)pi t + 5sin 2pi(10^3)t}. Find the maximum phase deviation. Find the maximum frequency deviation.
Find the annual electrical charges if the tariff is Rs 60 per kVA of maximum demand per annum plus 5 paise per kWh ; assuming the load to be steady for 2000 hours in a year.
Design an adder that computes the sum of four 8-bit numbers, using 8-bit carryripple adders. Use a basic 8-bit carry-ripple adder as a building block for the design.
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