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At t = t0, the voltage across a certain capacitance C is zero. A pulse of current flows through the capacitance between t0 and t0 +?t, and the voltage across the capacitance increases to V f . What can you say about the peak amplitude Im and area under the pulse waveform (i.e., current versus time)? What are the units and physical significance of the area under the pulse? What must happen to the peak amplitude and area under the pulse as ?t approaches zero, assuming that V f remains the same?
It involves developing a function called "single_phase_transformer_tests" that can work on user input data to generate the transformer voltage regulation and efficiency under various loading criteria.
Stepper motors are often used in low-power servomechanisms such as those found in small robots, computer printers, and other precision electro-mechanical machines. Explain why this type of electric motor is more popular than permanent-magnet DC mo..
·Insulators are a vital part in transmission system they held the overhead transmission line and provide a mechanical support besides they act as an electrical insulator to insulate the line from the supporting system ( pole, tower...etc.)
You are hired by a leading credit card company, Ford Chase Bank. One of their directos, Julie Hollas wants you to perform a small calculation for her. A customer wants to charge a Japanese robot to his credit card.
If you are now told that the material is copper and one cylinder has length 5 cms and radius 1mm, what is its resistance. You will have to locate the resistivity for copper and give me the reference source.
500W lighting is connected in parallel with an inductive load. A clamp-on ammeter reveals a total circuit current of 7A. What is the inductance of the load connected in parallel with incandesent lights. Assume a voltage of 120v and 60hz.
A control system is needed to control a small shopping center parking lot lighting system and the exterior lighting for the building. The design specifications require that the parking lot lighting and the exterior lighting turn on at dusk automat..
A small/thin circular conducting disk that can carry total current, as represented by 'I'. The current path is circular at every distance from the center of the disk, and the each circle center is the disk center.
At t = -250/6 μs, a sinusoidal voltage is known to bezero and going positive. The voltage is next zero at t = 1250/6μs. It is also known that the voltage is 75 volts at t =0. a) What is the frequency of v in herts
A toroidal core has a rectangular cross section defined by the surfaces a = 2 cm, b = 3 cm, z = 4 cm, and z = 4.5 cm. The core material has a relative permeability of 80. The core is wound with two coils having N1 = 1000 and N2 = 2500 turns of wir..
If an 8 kOhm load is connected to the terminals (a and b) of the unidentified linear circuit. Vab = 16 V. If a 2 kOhm load is connected to the terminals Vab = 8 V. Find Vab if a 20 kOhm load is connected to the terminals.
If the thermal conductivity of the material is 20 W/m · K, estimate the heat transfer rate per unit length of the bar using a finite-difference method. Use the Gauss-Seidel method of solution with a space increment of 10 mm.
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