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A 25,000/240-V rms distribution transformer has a primary current rating of 75 A.
(a) Find the transformer kVA rating.
(b) Calculate the secondary current.
If a 250 us period clock signal must be transmitted with a 10 kHz data signal on the same link, then what is the minimum bandwidth necessary to support both signals.
A 10kW, 230V, 50 Hz, three-phase induction motor has full-loadefficiency of 86%, and power factor of 88%. It is supplied by a three-core cable 100mlong, having conductors of cross sectional area 16 mm^2 andresistivity 17.2nΩ m.
(1) How do you measure frequency with DMM multimeter (2) Give an example of the power that a typical piece of equipment uses. Please list the sources lor how you obtained the value.
Two balanced three phase loads that are connected in parallel arefed by a three pahse line having a series impedence of 0.4+j2.7ohms per phase.one of the loads absorbs 560kva at 0.707 pf laggingand th eother 132kWat unity pf.
Explain Capacitance of parallel plates capacitor, Relative permitivity is 500, The area is one square meter, The distance between the plates is 0.001 meters
A three-phase Y- connected transformer bank (single phase) consists of three identical step-up transformers rated at 100MVA, 13.8kV:66.4kV. Each transformer has a series impedance of .0045 + j0.19-ohm referred to its 13.8kV winding.
The balanced 60Hz waveform sample that we must modulate is the point where t=4.4ms. The DC voltage from rail to rail is 300V. assume the q axis and a axis are in same direction. The use of mathCAD is recommended.
When unmodulated the carrier voltage is 75 volts peak. An information (modulating) signal of 15 KHZ with 5 volts peak amplitude causes a frequency deviation of 22.5 KHz. If the load resistor RL= 100 Ohms, determine the following Modulation index
The message signal x(t), in the following system has a nabdwidth of 10kHz. The center frequecy of the Narrow Band Frequency Modulated (NBFM) signal nbfm(f) is 1Mhz, the frequency deviation f1=1khz and the amplitude of the NBFM signal is 1V.
A Thevenin equivalent can also be determined from measurements made at the pair of terminals of interest. Assume the following measurements were made at the two external terminals a, b of a circuit.
Draw the logic diagram to implement the following functions using AND and OR gates. Form a truth table for each and show the outputstate for each possible input combinations (notice that there are16 possible input combinations).
Use Laplace transform techniques to find the solution to the following differential equation given that x = 1/3 at t = 0.
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