ENGR_400_Module_8_Assignment

A generator operating at 50 Hz delivers 1 p.u. power to an infinite bus through a transmission circuit in which resistance is ignored. A fault takes place reducing the maximum power transferable to 0.5 p.u. Where as before the fault, this power was 2.5 p.u. and after the clearance of the fault, it is 2 p.u. The value of 8 is max

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Problem 1 - Series en Parallel AC networks [19] Look at the circuit in Figure 1 and determine the following: (a) Total Admittance. (b) Total Impedance. (c) Total Current (l:). (d) Current (I1) through impedance Z2. (e) Current (12) through impedance Z3. (f) Current (I3) through impedance Z4. (g) Is this an inductive or capacitive circuit? A. B Zs 220V;50HZ Figure 1 (h) Voltage across Z1. (i) Voltage across A and B. G) Voltage across Zs. Z1 = 3 + j5 ohm Z2 = 10 + jo ohm Z3 = 5 + j15 ohm Z4 = 10 – j30 ohm Zs = 20 – j30 ohm Admittance and Impedance in rectangular notation. All currents and voltage in polar notation. Take voltage as reference.

step down chopper has Vs = 230 V and R = 10 0. For a duty cycle of 0.4, the power taken by the chopper is 2097 Watts. Find the chopper efficiency. Take the voltage drop across the chopper switch as 2 V. a) 98 % b) 89.96 % c) 99.14 % d) 96.54 %

60. An RLC series circuit connected to a 110-volt and 50-cycle AC source, contains the following series resistances and reactances: R1=10 ohm, R2= 15, XL1=20 ohms, XL2=25 ohms, XC= 40 ohms. Find the real power. a. 65.3899 b. 392.4372 c. 397.848 d. 588.6559

A 500 MVA synchronous machine has H, = 5.6 MJ/MVA and a 1200 MVA machine has H₂ = 2.0 MJ/MVA. The two machines operate in parallel in a power station. What is the equivalent. H constant for the two, relative to a 100 MVA base?

1.3 A 240 volts 50 Hz single phase ac source supplies a series load consisting of a resistor (40 ohms), a reactor (127.324 mH) and a capacitor (318.3 µF). Suppose that the frequency of the source can be varied at will. 1.3.1 Determine the maximum load current. 1.3.2 Determine the source frequency for maximum load current. 1.3.3 What is the name of this frequency? 1.3.4 Determine the load power factor. 1.3.5 What is the name of the source

Explain the principles of power quality in electrical systems and the factors affecting it, including harmonics and voltage sags.

A d.c. serier generator, having an external characteristic which is a straight line through zero to 50 V 200 A is connected as a booster between a station bus bar and a feeder of 0.3 ohm resistane. Calculate the voltage difference between the station bus-bar and the far end of the feeder qa current of (i) 200 A and (ii) 50 A.

Don't use other platforms answer and also don't use chatgpt. A 3 phase 6000 kVA, 6600V, Y connected 2 pole 60 Hz alternator has the following characteristics: a. Field current= 125A, Open Circuit Voltage line value=8000V, Short circuit current=800A At full load the resistance drop is 3%. Find voltage regulation at power factor of 0.8 lagging.