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If the phase voltage of a three-phase star connected alternator be 231V, what will be the line voltages;
i)when the phases are correctly connected.
ii)when the connections of one of the phases are reversed.
A DC power supply is adjusted to give a no load output voltage of 15 volts with the AC line voltage of 115 volts rms. A full load current of 1A is drawn into the circuit and the output voltage drops to 14.89 volts.
A 5-volt intelligence amplitude causes the frequency to change to ± 25 kHz. What will be the carrier frequency variation corresponding to an intelligence amplitude of 10 volts
What is an electron diffusion current? And what does it have to do with semiconductors?
Make sure to mark significant points in your figure (amplitude, offset, time, etc.). How could a device be modified to work as an electro-optic phase modulator? If we apply signal V, what is the range of phase shifts induced by this modulator.
Develop the VHDL text file for a binary down-counter to divide a frequency by 32. Use Q as the outputs and CLK as the falling edge clock input.
A 20-m3 tank contains nitrogen at 23 C and 600 kPa. Some nitrogen is allowed to escape until the pressure drops to 400 kPa and the temperature to 20 C. Determine the amount of nitrogen gas that has escaped in kg. How much in this in Kmoles
An urn contains N balls numbered 1 to N. Someone draws n balls(without replacement) from the urn, where 1
Design a series controller (a PD, PI or PID) so that the following performance specifications are satisfied. Steady-state error due to a step input = 0
You mix aqueous solutions of sodium iodide and lead(II) acetate. If a reaction occurs, write the balanced molecular equation and the net ionic equation. If no reaction occurs, indicate this by writing the formulas of the compounds and an arrow fol..
Suppose that the cost of electrical energy is $0.12 per kilowatt hour and that your electric bill for 30 days is $60 (power usage only, not including other charges or taxes) Assume that the power delivered is constant over the entire 30 days.
If a potential V0 is given on the positive x axis, calculate the potential everywhere in the first quadrant. Hint: Use cylindrical coordinates.
Transmission line A coaxial transmission line has characteristic impedance Z0 = 50 ohms and has length L = 200 m and phase velocity vp = 2.0e8 m/s. The end at x = 0 is terminated with Rs = 50 ohms and the end at x = L is terminated with RL = 75 oh..
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