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Two-wattmeter method is used to measure the power absorbed by a 3-phase induction motor. The wattmeter readings are 12.5kw and 4.8 kw.
find:
i) the power absorbed by the machine
ii) load power factor
iii) reactive power taken by the load.
The magnetic flux density in the core of a 4.4-kVA, 4400/440-V, 50-Hz, step-down transformer is 0.8 T (RMS). If the induced EMF per turn is 10 V
Maximum charge on the globe. Calculate the maximum amount of charge that can be placed on the globe without causing breakdown in air. Assume a radius of 6400 km and breakdown occurs at 3 x 106 V/m.
Polonium (Po) is the only material which forms a simple cubic crystal (i.e., it is not FCC or BCC) structure with atoms at the corner positions. It is a metal (but it is radioactive so it has very few engineering applications!). Its atomic number ..
Writing a report about the expriment meter circuits. Your report should include A discussion of the technique for measuring the meter internal resistance.
An amplifier with a gain of 12 dB, a bandwidth of 150 MHz, and a noise figure of 4 dB feeds a receiver with a noise temperature of 900 K.
Determine the dBm level for an output of 120mW A power level of 100W is 6dB above what power level Find the output voltage of an amlifier if the applied voltage is 20mV and a dBv gain of 22 dB is attained
Assume the average energy density of sunlight to be 800 w/m^2 ---and the overall photovolatic system efficiency to be 10 percent. Calculate the land area covered with photovolatic cells needed to produce 1000 Mw , the size of a typical large centr..
Use Active HDL to show a timing diagram showing the inputs, outputs, and state (including last A) of the VHDL state machine of the attached design and bench test
The output is 1 when the pattern abca has occurred an even number of times in x(0,t). Give a state description of the system. Use a state vector approach and a minimum-number-of-states approach.
The shunt capacitance of metal work ofeach insulator is 0.26C to earth and 0.15C to line. Find the stringefficiency if a guard ring increases the shunt capacitance to lineof the metal work of the lowest insulator to 0.35C.
When operates on 50 or 60 Hz frequency transformer, Which one will give more Output?
TDMA has 416 frequencies in one of the cellular license bands. If a cellular operator designs a network with a 5/15 reuse pattern, how many frequencies per cell (sector) can be supported? ( ignore control channels)
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