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A residence supplied by a 120/240 V, single-phase, three wire service has a total estimated demand load of 25,000 VA. The total estimated neutral loading is 17,000 VA. Determine the service overcurrent protection device rating and undergrounded and grounded service conductor size. Use XHHW aluminum conductor and 75o C device terminal ratings and allow for 25% load growth.
A square wave has a max value of 22 volts, a min value of -46 volts, and a frequency of 44 Hz. Note that it is not centered around the t-axis. what is its rms voltage?
The steering wheel has backlash. This means there is a delay between the time the wheel is turned, and the time the car responds. The driver tends to overturn, which leads to instability and lack of control of the car.
The aim of this experiment is to develop a bipolar transistor amplifier with a voltage gain of minus 25. The amplifier must accept input signals from a source impedance of 1 kW and provide an undistorted output amplitude of 5 V when driving a 560..
What are the names of the three regions of the bipolar junction transistor Why is there a thin region of one material type "sandwiched" between two layers of the opposite material type
A binary waveform of 53000 bits/sec is converted into an 8192 level waveform that is passed through a channel with a raised cosine-rolloff filter characteristic. The channel has a conditioned (equalized) phase response out to 4.0 kHz.
A modulating signal is amplified by a 80% efficiency amplifier before being combined with a 20 kW carrier to generate an AM signal. what would be The required DC input power to the amplifier, for the system to operate at 100% modulation.
Assume the ASCII code is used for each character with an additional parity bit (in the most significant bit position, at left) Each character in ASCII is using 8 bits. a) What english word is coded by the following Hexadecimal sequence
1- If the diameter of a spherical water droplet is 100.0 µm, how much energy is required to increase the diameter of the water droplet by 3.0 µm The surface tension of water is 1.0 x 10-3 J/m2. 2- A metal crystallizes in a face-centered cubic lat..
A line has an inductance of1.25mH/km with an impedance angle of 70 degree , and a capacitance to neutral of 0.01mF/km. Calculate its reactance and series impedance per unit length at 50Hz. Calculate the line admittance per unit length
A 4 pole, 3 phase induction motor is given a supply of frequency 50 Hz. Rotor speed is 1490 rpm. a) Find slip s b) The relative speed between stator field and rotor field c) Frequency of stator field and rotor field
A small circular parabolic reflector, often referred to as dish, is now being advertised as a TV antenna for direct broadcast. Assuming the diameter of the antenna is 1 meter, the frequency of operation is 3 GHz, and its aperture efficiency is 68%
where the assigned loop current leaves the voltage source. If current leaves the voltage source at its positive terminal, the voltage would be positive and if it leaves the voltage source at its negative terminal,the voltage would be negative.
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