Question

In: Electrical Engineering

a)The voltage and the current of a circuit are v=1∠30oV and i=2∠-37oA. Determine the power factor....

a)The voltage and the current of a circuit are v=1∠30oV and i=2∠-37oA. Determine the power factor.

b)A short transmission line is delivering a 3-phase load of 1MVA at 11kV and the load power factor is 0.8 lagging. The total series impedance of the line is (10 + j20)Ω/phase. Calculate the sending end power factor.

c)A supply company offers a Two-parts Tariff on a monthly basis. The Maximum Demand Charge is $90 per kVA per month and the Energy Charge is $0.6 per kWh. A factory has a load of average 200kW. It operates at a monthly load factor of 0.75 and a power factor of 0.85 lagging. Assume the factory works 400 hours per month, determine the electricity charge.

d)Two generators G1 and G2 are connected in parallel to an 11kV common busbar. The generator G1 is rated at 15MVA, 11kV with X=0.10pu and the generator G2 is rated at 10MVA, 11kV with X=0.10pu. The 11kV busbar feeds an 11/66kV, 15MVA, X=0.06pu step-up transformer. Calculate the fault current when a three phase fault occurs on the high voltage side of the transformer. Select 15MVA as the base power.

Solutions

Expert Solution

Manojponduru answered 8 months ago
Next > < Previous

Related Solutions

P = Power, V = Voltage, I = Current, and R = Resistance. Which of the...
P = Power, V = Voltage, I = Current, and R = Resistance. Which of the following relations is incorrect? Choices: V = I R P = V R P = VI I = V/R
what is the short circuit current (Isc) and open circuit voltage (Voc) and how can I...
what is the short circuit current (Isc) and open circuit voltage (Voc) and how can I obtain those value from a I-V curve?
Table 2: Voltage Readings of Different AA Battery Combinations Battery Combination Voltage (V) Current (A) 1...
Table 2: Voltage Readings of Different AA Battery Combinations Battery Combination Voltage (V) Current (A) 1 1.58 1.4 1 and 2 3.16 3.37 1, 2 and 3 4.74 4.50 1, 2, 3 and 4 6.50 6.17 Table 3: Resistor Data Resistance (Ω) Slope (V/A) Percent Difference 10 Plot a graph of Table 2. Consider which variable (voltage or current) should be on the x and y axes. What is the relationship between voltage and current? Use data from your graph...
I have a circuit with a known battery voltage and a known primary current through the...
I have a circuit with a known battery voltage and a known primary current through the circuit, but the circuit is complex with multiple IDENTICAL resistors (3 or 4 in this case), how would I solve for the resistance those resistors?
1. Why don’t the short circuit and open circuit voltage produce power in a p-n cell?...
1. Why don’t the short circuit and open circuit voltage produce power in a p-n cell? 2. The power supplied by a solar cell is proportional to its surface area. Using the flux of solar energy under AM1 conditions, estimate the power a 1-cm2 solar cell will yield. State explicitly any assumption you make.
When a magnet is plunged into a coil at speed v, as shown in the figure, a voltage is induced in the coil and a current flows in the circuit.(Figure 1)
When a magnet is plunged into a coil at speed v, as shown in the figure, a voltage is induced in the coil and a current flows in the circuit. (Figure 1) Part A If the speed of the magnet is doubled, the induced voltage is ________. a.) twice as great b.) four times as great c.) half as great d.) unchanged  
When a magnet is plunged into a coil at speed v, as shown in the figure, a voltage is induced in the coil and a current flows in the circuit.(Figure 1)
When a magnet is plunged into a coil at speed v, as shown in the figure, a voltage is induced in the coil and a current flows in the circuit. (Figure 1) Part A If the speed of the magnet is doubled, the induced voltage is ________. a.) twice as great b.) four times as great c.) half as great d.) unchanged  
(Transient Current) An RLC series circuit has a voltage source given by E(t) = 20sin(t) V,...
(Transient Current) An RLC series circuit has a voltage source given by E(t) = 20sin(t) V, an inductor of 3 H, a resistor 6 Ω, and a capacitor of 1/3 F. Find the current I(t) in this circuit for t > 0 if I(0) = 2, I'(0) = 0. Find the moment of time when the transient current is equal to zero
Bulb A is labeled with power P and voltage V, bulb B is labeled with power...
Bulb A is labeled with power P and voltage V, bulb B is labeled with power P/2 and voltage V. These two bulbs are connected in series and then to some source of voltage, which is unknown. Which one produces greater illumination?
A battery that has a voltage of 20V is attached to a circuit. A current of...
A battery that has a voltage of 20V is attached to a circuit. A current of 4A is created in the circuit. What is the resistance of the circuit? A series circuit with made up of a 12 V battery, a 4Ω resistor, a 8Ω resistor, and a 12Ω resistor. Calculate the equivalent resistance of the circuit. B. Calculate the voltage drop at the 8Ω resistor. A parallel circuit comprised of a 24 V battery and two 48Ω resistor. Calculate...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT