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A MOSFET transistor is being used as a converter switch in a 100v system. It is switching at 50 KHz and has a linear transition time of 3us. The full load current is 40 amps.- How much average power is being wasted due to switching?- If this is the only loss mechanism, what is the system efficiency?- What transition times would be needed to achieve an efficiency of 90%?
- If the frequency is doubled, describe the change in efficiency?
Steel surfaces can be hardened by carburization. During one such treatment at 1000°C, there is a drop in carbon concentration from 5 to 4 at% carbon between 1 and 2 mm from the surface of the steel. Estimate the flux of carbon atoms into the steel
Absorption loss of metal shielding, A plane metal shield offers an absorption loss of 30 dB at a frequency of 10 kHz to normally incident radiated emission.
How many turns are required for a circular loop of 100-mm radius to develop a peak emf of 10mV if the loop rotates 30r/s in the earth's magnetic field Take B = 60E-6T.
he real power delivered by a source to two impedances, Z1=3+j4 ohm and Z2=10 ohm, connected in parallel, is 1100 W. Determine (a) the real power absorbed by each of the impedances and (b) the source current.
a three phase motor operates at 70% efficiency, out of a 60Hz 480V balanced system of voltages. the motor takes a line current of 70A at a lagging power factor 65%. if the motor is rotating at 3500 rpm, and neglecting fraction, what is the torque ..
A 1 kHz sine wave signal with a power level -10 dBm is applied to the input of the amplifier. What is the power at the amplifier output in dBW?
What is the time response
Need for radical future plans to alleviate the very real problem we are faced with in New Zealand and address this problem, by providing an answer to Transpower
Store the arrival times in memory locations starting from $1000.(Do this is in C. Store the results in an array and don't worry about the speci c location of the results.)
Use the immediate addressing mode to add four to each value that is loaded to accumulator. Store the results in Locations 13-15. Let's assume that in Locations 10-12 we have the values 5, 6, and 7. After executing your code, the values in Location..
Step-down transformer
induction cooking based on power electronic is estimated to be 80 percent efficient compared to 55 percent for conventional electric cooking . if an average home consumes 2 kw-hrs daily using conventional electric cooking.
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