Electrical and Computer Engineering Homework Solutions

Output horsepower and efficiency.

I am attaching a scanned image of a question. Please show the answer and the method used to obtain the answer. Thanks,

AC sine wave

An AC sine wave is applied to the input of a full wave rectifier. The output of the full wave rectifier is then applied to a half wave rectifier. The output of the half wave rectifier will most closely resemble: the original sine wave? An inverted form of the original sine wave? the output of the full wave rectifier? none ...continues

Electrical Energy Conversion

Please refer to the attached file. It contains more than one-page. Please answer at least TWO multiple-choices questions. Explain in-detail why such answers are chosen. It is difficult to answer these non-assignment multiple-choices questions. Please help to work out the detailed step-by-step answers to these non-assign ...continues

Electrical Energy Conversion

Please refer to the attached file. It contains more than one-page. Please answer at least TWO multiple-choices questions. Explain in-detail why such answers are chosen. It is difficult to answer these non-assignment multiple-choices questions. Please help to work out the detailed step-by-step answers to these non-assign ...continues

Electrical Energy Conversion

Please refer to the attached file. It contains more than one-page. Please answer at least ONE multiple-choices questions. Explain in-detail why such answers are chosen. It is difficult to answer these non-assignment multiple-choices questions. Please help to work out the detailed step-by-step answers to these non-assign ...continues

Electrical Energy Conversion

Please refer to the attached file. It contains more than one-page. Please answer the multiple-choices question. Explain in-detail why such answer is chosen. It is difficult to answer this non-assignment multiple-choices question. Please help to work out the detailed step-by-step answer to this non-assignment multiple-ch ...continues

To determine the equivalent winding resistance, percentage regulation, efficiency of a single phase transformer.

A single-phase transformer is rated 100kVA, 2200:440 volts. When carrying rated current with the low voltage terminals short-circuited, the input power was 1.14kW, and the applied voltage 93V rms. (a) Determine the equivalent winding resistance and leakage reactance of the transformer referred to the low voltage side. (b) ...continues

Transformer Magnetising Current

The primary winding of the transformer considered in question has 1000 turns. The iron core has a cross section of 70cm^2, and a mean path length of 150cm for the magnetic flux within it. The permeability of the iron may be assumed to be 0.0040 henrys per metre. (a) Calculate the maximum flux and flux density in the iron core ...continues

Permeability of Free Space

State the meaning of permeability, write down the expression for the permeability of free space, and indciate how it was developed from the Biot-Savart Law. Draw the B-H characteristic for: a) a ferromagnetic material b) a non-ferromagnetic material and show how the permeability may be calculated from them.

Half-wave controlled rectifier circuit (Power Electronics)

I've attached jpegs that show the circuits that I'm working with. My problem is that I don't know how to find the values of Ct and Rt for a specific firing angle. What formulas are needed? Is the calculation affected by the fact that there are two different loads (see circuits 1 and 2 jpegs)? What process must I go through to fi ...continues

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