Complex Power and Impedance

An electrical load operates at 240 volts rms. The load absorbs an average power of 8kW at a lagging power factor of 0.8. a) Calculate the complex power of the load. b) Calculate the impedance of the load. Please see attachment for multiple choice options.

Transformer and Load

In the following circuit find Ix and Iy. HINT: First find Ix by replacing the transformer and load at point x, x with the transformed load impedance. Please see attached for diagram and multiple choice options.

Current Flow

Consider the following circuit. Approximately how much current will flow through the 1K OHM resistor in parallel with the current source? Please see attached for diagram and multiple choice options.

Circuit Calculation

For the following circuit, find Vx, I1, and I2. a) Vx=5V, I1=0.5A, I2=0.5A b) Vx=10V, I1=0.5A, I2=1A c) Vx=2.5V, I1=0.75A, I2=0.25A d) Vx=7.5V, I1=0.25A, I2=0.75A Please see attached for diagram.

Logic Circuit

19. The outputs of two "NAND" gates are connected to the inputs of an "EXCLUSIVE OR" gate. Each of the "NAND" gates has one input at logic high level, and the other input at a logic low level. What is the output of the "EXCLUSIVE OR" gate? a) logic high b) logic low c) logic low, unless the output is "open collector" d) n ...continues

Output of a Logic Circuit

20. Find the expression for the output, C, of the logic circuit shown in the following figure. Please see attachment for diagram and multiple choice options.

Laplace transform of the transfer function

I am attaching a scanned in image of a recent problem. Please answer and give method of obtaining the answer. Thanks,

Electric Heater

The Problem: An Electric Heater is connected to a constant 250-V source and absorbs 1000 W. Subsequently, this heater is connected to a constant 210 V source. What power does it absorb from the 210-V source? What is the resistance of the heater? My Answer: Using Hint from problem 2.5-7: Model the electrical heater as a resis ...continues

Determine the voltage drop (from top to bottom) across the 16 ohm resistor the circuit shown.

Referring to the attached document: Determine the voltage drop (from top to bottom) across the 16 ohm resistor the circuit shown. My Answer: 16Ohm/(16Ohm+8Ohm)*12V=8V Additionally: Referring to the circuit shown, determing the voltage drop across the 4 ohm resistor: My Answer: 4Ohms/(4Ohms+8Ohms)*12V=4/12*12V=4V ...continues

Thevenin Equivalent Voltage

Please refer to the diagram attached. A resistor, R, was connected to a circuit box as shown. The voltage, v, was measured. The resistor was changed, and the voltage was measured again. The results are shown in the table. Determine the Thevenin equivalent voltage vt of the circuit within the box. My Answer: Rc=Vt/it I=6V/( ...continues