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How to find out which is the low voltage and which is the high voltage side of a transformer without connecting it to supply mains?
The simple inexpensive hydro turbo-generator (turbine mated with electric generator) that you intend to buy has a working efficiency of 60%. Answer the following (show your work).
Three balanced three-phase loads are connected in parallel. Load 1 is Y-connected with an impedance of 400+j300 Ohms per phase;[ load 2 is delta-connected with an impedance of 2400-1800j Ohms per phase; and load 3 is 172.8+j2203.2 kVA.
An output pulse of 5μs duration is to be generated by a 74LS122 one-shot. Using a capacitor of 10,000 pF, determine the value of external resistance required.
The design guidelines for a circuit call for using only 1/4 W resistors. This means that the resistors are only capable of dissipating .25W of power without sustaining damage. The maximum voltage level in the circuit is known to be 12 V.
A Si sample is doped with 1014 boron atoms per cm3. (a) What is type of semiconductor is it in terms of carrier type. What are the minority and majority carriers.
Someone needs to explain to me how in God's name can you get a value of 600 watts from 2 sources, one of value 400 watts and another of -600 watts
Your VHDL description should be structural and constructed from 3 behavioral VHDL 1-bit ALU blocks, a special behavioral VHDL 1-bit ALU block for the most significant bit and a behavioral VHDL block for the zero detect logic.
A heat engine operating in outer space may be assumed equivalent to a Carnot engine operating between reservoirs at temperatures TH and Tc The only way heat can be discarded from the engine is by radiation
A liquid level system converts a 4-10 m level into a 4-20mA current. Design a three mode controller (PID im assuming) that outputs 0-5 volts with 50% PB, 0.03 min integration time, and 0.05 min derivative time. Fastest expected change time is 0.8 ..
A radio receiver has a noise power N = kTB watts, with T = 100 K and B = 1.0 MHz. The value of k is 1.38 x 10^-23 J/K. What is the noise power in dBW?
a) Calculate alpha, omega-sub-delta, and omega-sub-zero. b) write the equation which describes the current i for t>0. c) determine the maximum value of i, and the time at which it occurs, if the inductor initially stores no energy and v(0-)=9V.
An induction motor has the following specifications: a 8-polesquirrel cage rotor, operates at 25 hp off of a 220 V line-to-line3-phase service, 60 Hz, 64 amps of line current, and under fullload runs at 830 RPM. The motor draws 20.8 kW at full loa..
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