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A 22/127 kV, 125 MVA transformer has primary and secondary impedances of 0.015 + j 0.06 pu each. Its magnetizing reactance is j 120 pu. The pu values are expressed on the base of the transformer rating. Calculate the primary and secondary impedances in ohms and also the magnetizing reactance in ohms on the LV side.
(A)Under equilibrium conditions and T= 0 Kelvin ,what isthe probability of an electron state being occupied if it is located at the Fermi level (B) If Ef is positioned at Ec,determine(numerical answer required) the probability of findingelectrons in..
A 220 V, 1500 rpm, 11.6 A (armature current) separately excited motor is controlled by a single phase, full wave SCR converter. The armature resistance of the motor is 2 ohm. The ac source voltage is 230 V (rms) 60 Hz.
Discuss the following: - a)Thin-layer chromatography & - b)High Performance Liquid Chromatography (HPLC)- Principle of their methodology.
The manufacturer of a 9V dry-cell flash light battery says that the battery will deliver 20mA for 80 continuous hours. During that time the voltage will drop from 9V to 6V.Assuming the drop in voltage is linear with time.
Briefly explain which point on the Phillips curve graph best represents the same economic situation as point B on the aggregate demand and aggregate supply graph.
A power utility pole has a transformer with 2400 turns in theprimary and 4.5kV coming from the power line. Describe the center-tapped secondary needed to obtain 240V(120V/120V) for a commercial customer.
The accompanying schematics each show two inductors with coupling but with different dot markings. For each of the two systems, determine the equivalent inductance of the system at terminals 1-1' by combining inductances.
In a 50 mm diameter x 0.5 mm thick wafer of pure germanium at room temperature, (a) how many conduction electrons would be present, and (b) how many electron holes would be present.
A system initially consists of 3 lbm of a substance having specific internal energy u of 20 Btu/lbm, and 6 lbm of the same substance having an internal energy of 30 Btu/lbm. 150 Btu of energy is transferred as heat to this system
e^-x=(1/e^x)=1/(1+x+(x^2/2)+(x^3/3!)+...) and compare with the true value of 6.737947*10^-3. Use 20 terms to evaluate each series and compute true and approximate relative errors as terms are added.
For the emitter bias network of Fig, determine:- IB, IC, VCE.- Given that ICQ = 2 mA and VCEQ = 10 V, determine R1 and RC for the network.
of resistance 5 and inductive reactance 12 is connected across a supply voltage of 526 30° volts. Determine the active power in the circuit.
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