Electrical Engineering Answers

4. Two power stations, A and B, which are in phase at 66 kV, supp!y respective

inductive loads of 455 MVA at an inductive power factor of 0.766 and 555

MVA at a lagging power factor of 0.88295 respectively. An inter-connector

with an impedance of 4.45∠75 0 ohms per line, links station A with station B.

By means of a phase regulator at A, the phase angle of the voltage at A is

advanced in order to increase the loading of station A to 620 MW.

4.1 Use standard formulae and calculate the angle of advance at power station A.

(16.060)

4.2 Calculate the transmission line active power loss.

(19.765 MW)

Draw the state diagram of the Moore machine which has 2 inputs (X1, X2) and one output Z. The output of the machine is determined by the following:

* Z does not change its value if X1 X2 = 00

* Z becomes 1 if X1 X2 = 01

* Z becomes 0 if X1 X2 = 10 * Z change its value if two consecutive 11 are received at the inputs X1X2

* The reset input initializes the machine to a 0 output. 

Write a MATLAB code to generate Double Side Band Full 

Carrier and Single Side Band Suppressed Carrier signals if 

Fc=500KHz and Fm = 1.2KHz and submit the simulated 

results.

Calculate the Rms value of a sinusoidal current of maximum value of 20A

integrate sqrt(x ^ 3 + 2x ^ 2 + x) dx

Insulator capacitance of MOSFET 10 micro F . width of depletion layer 0.2 cm and permitivity is 33 . calculate total capacitance

The saturation current will be the twice of the diode current. and contact potential of the diode is 33 Volt. calculate the temperature.

Q and A.

Between superposition, nortons and thevenin's theorem, between the 3 theorem, which do you think is most beneficial and which theorem is super hard to apply or to the point that it's not applicable anymore? Give an example and state why?

) State and prove Wiedemann–Franz law (or) Derive expressions for electrical and thermal conductivities on the basis of classical free electron theory and deduce the value of Lorentz number

) State and prove Wiedemann–Franz law (or) Derive expressions for electrical and thermal conductivities on the basis of classical free electron theory and deduce the value of Lorentz number