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A car battery with a 14.2 V emf and aninternal resistance of 0.0380 is beingcharged with a current of 51.5 A.(a) What is the potential difference across itsterminals?(b) At what rate is energy being dissipated as thermal energy inthe battery?(c) At what rate is electrical energy being converted to chemicalenergy?(d) What are the answers to (a) and (b) when the battery is used tosupply 50 A to the starter motor?
Design a full wave (Bridge) rectifier as a dc power supply that provides a peak dc output voltage of 15V on which maxiumum of 5% ripple is allowed. The rectifier feeds a load of 200Ω. The rectifier is fed from the line voltage (120V rms, 60 Hz) th..
Suppose that we are designing a cardiac pacemaker circuit. The circuit is required to deliver pulses of 1-ms duration to the heart, which can be modeled as a 500 ohm resistance. The peak amplitude of the pulses is required to be 5 V.
An uncharged capacitor and resistor are connected in series with a 12V source and switch. What is the voltage across the capacitor after the switch is closed and the capacitor is fully charged
If a constant voltage drop of 16 V is maintained across an inductance of 140 mH that was initially carrying 1.6 A of current, how much time elapses before the inductor's stored energy reaches 590 mJ?
Why developing software for wireless devices is challenging? List and briefly describe the two (2) reasons given in your textbook for why developing software for wireless devices is challenging.
Each phase of the load consists of an impedance of 30 + j40 ohms. Find the line to neutral voltage phasors, the line to line voltage phasors , the power and the reactive power delivered to the load. Assume that the phase of Van is zero.
A 2000kW synchronous motor operates at a three - phase line-to-line voltage of 4kV. It has a synchronous reactance of 4 ohms per phase. Calculate a) The nominal full load current of the machine when the excitation voltage E0 ( line - to-line) is 4k..
The expression for the torque of an induction motor as a function of its slip may be obtained by application of Thevenin's theorem to the circuit model. Show that the Zth obtained can be shown to be approximately equal to Zth = R1+JX1
1. For a triangular waveform, with a peak amplitude of 2V, a width of 10ms, and a period of 10 ms a. Draw the waveform. b. What do you think the average value will be for this waveform. c. Determine the average value - was it wh..
A proportional controller for a rotating antenna has a gain Kp of 5 in-oz/deg. The antenna was initially pointing due south, but was then commanded to point southeast. Find the initial torque supplied to the antenna.
Write the VHDL architecture file for the Y(5) output only for a 8-to-1 demultiplexer. The inputs are D, the selects S0-S2, and the ouputs Y(0)-Y(7). the select lines are bit_vector types, the data is bit type and the outputs are bit_vector types.
A three phase Y-connected induction motor operates at 220 volts, has a power factor of 75% and an efficiency of 84% when delivering 8HP. a) what is the current in any one of the phase windings
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