By John Bird
Electric Circuit thought and know-how is a completely finished textual content for classes in electric and digital ideas, circuit thought and electric expertise. The insurance takes scholars from the basics of the topic, to the final touch of a primary yr measure point path. therefore, this booklet is perfect for college students learning engineering for the 1st time, and is additionally compatible for pre-degree vocational classes, specially the place development to raised degrees of analysis is probably going.
John Bird's method, in line with seven hundred labored examples supported through over one thousand difficulties (including answers), is perfect for college students of a variety of talents, and will be labored via on the student's personal velocity. conception is stored to a minimal, putting a company emphasis on problem-solving abilities, and making this a completely sensible creation to those center topics within the electric and digital engineering curriculum.
This revised version comprises new fabric on transients and laplace transforms, with the content material conscientiously matched to commonplace undergraduate modules.
* Revised version now comprises extra fabric on Transients and Laplace transforms
* hugely sensible textual content, together with thousands of examples and difficulties all through to help scholar studying
Read or Download Electrical Circuit Theory and Technology (Revised 2nd Edition) PDF
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Extra info for Electrical Circuit Theory and Technology (Revised 2nd Edition)
F. of one cell Total internal resistance of n cells D 1 ð internal resistance of one cell n Problem 1. f. 2 V are connected (a) in series, (b) in parallel. f. and the internal resistance of the batteries so formed. f. f. f. f. 025 Z Problem 2. f. 0 V. d. f. d. decreases as the current drawn increases. Problem 3. d. at the terminals of a battery is 25 V when no load is connected and 24 V when a load taking 10 A is connected. Determine the internal resistance of the battery. f. d. 1 Z r D 10 Problem 4.
E volts and internal resistance, r, and XY represents the terminals of the cell. , V D E. When R is connected a current I flows which causes a voltage drop in the cell, given by Ir. d. f. f. 3. f. d. e. when I D 0), then E is as shown by the broken line. 2 the cell is said to be charging V > E Chemical effects of electricity 35 A battery is a combination of more than one cell. The cells in a battery may be connected in series or in parallel. f. f. f. f. of one cell Total internal resistance of n cells D 1 ð internal resistance of one cell n Problem 1.
Determine the power dissipated by the element of an electric fire of resistance 20 when a current of 10 A flows through it. If the fire is on for 6 hours determine the energy used and the cost if 1 unit of electricity costs 7p. PowerP D I2 R D 102 ð 20 D 100 ð 20 D 2 000 W or 2 kW (Alternatively, from Ohm’s law, V D IR D 10 ð 20 D 200 V, hence power P D V ð I D 200 ð 10 D 2000 W D 2 kW) Energy used in 6 hours D power ð time D 2 kW ð 6 h D 12 kWh 1 unit of electricity D 1 kWh Hence the number of units used is 12 Cost of energy D 12 ð 7 D 84p Problem 19.
Electrical Circuit Theory and Technology (Revised 2nd Edition) by John Bird