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A circular toroid of mean diameter 25 cm and csa 4 cm 2 has a 1.5 mm air gap in it. The toroid is wound with a 1200 turn coil and carries a flux of 0.48 mWb. If, under these conditions, the relative permeability of the toroid is 800, calculate the coil current required.
In a Kademlia network with m = 4, we have five active nodes: N2, N3, N7, N10, and N12. Find the routing table for each active node (with only one column).
A single-phase 50-KVA, 2400/240-volt, 60-Hz distribution transformer has a 1-ohm equivalent leakage reactance and a 5000-ohm magnetizing reactance referred to the high-voltage side. If rated voltage is applied to the high-voltage winding
A synchronous motor exited by 5 kV source has a synchronous reactance of 5 ohm .The motor is running without any mechanical load(the output real power is zero). Ignore all losses and calculate thr equavelent field voltage Ef that delivers 3 M VAr ..
Determine the rms values of the voltages VR and VL and the current I. - Plot vR, vL, and i versus time on separate plots.
An analog cellular system has 250 duplex channels available (250 channels in each direction). To obtain acceptable transmission quality, the relation between reuse distance (D) and cell radius (R) has to be at least D/R = 7. The cell structure is d..
What are the tolerances associated with a standard lightning impulse waveform and, a standard switching impulse waveform and define Marx's principle and explain how it is used in the operation of a multi stage impulse generator.
Approximately 10% of the glass bottles coming off a production line have serious defects in the glass. If two bottles are randomly selected for inspection, find the expected value and variance of the number of inspected bottles with serious defect..
An op amp with an open-loop gain of 6x10^5 and Vcc = 10V has an output voltage of 3V. If the voltage at the inverting input is -1 μV, what is the magnitude of the noninverting-input voltage
The average power used by the resistor is what you pay to the electric company, but there is also reactive power for which you do not. The complex power supplied to the circuit is defined as: P = ½ V s I*
The heater element of an electric kettle has a constant resistance of 100 Ω ohm and the applied voltage is 250 V. Calculate the time taken to raise the temperature of one litre of water from 15°C to 90°C assuming that 85% of the power input
Calculate the overall heat transfer coefficient (U) for the assumed tube diameter, finshape and material. Use correlations to estimate hot-and cold-side convectioncoefficients, conduction resistance, contact resistance (if any), and fouling resist..
State the advantages of digital versus analog quantities.
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