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Question:
A consumer has an average demand of 400 kW at a p.f. of 0.8 lagging and annual load factor of 50%. The tariff is Rs 50 per kVA of maximum demand per annum plus 5 paise per kWh. If the power factor is improved to 0.95 lagging by installing phase advancing equipment, calculate :(i) the capacity of the phase advancing equipment (ii) the annual saving effected
The phase advancing equipment costs Rs 100 per kVAR and the annual interest and depreciation together amount to 10%.
a beam of light strikes a sheet of glass at an angle of 57.0circ with the normal in air. you observe that red light
In discovering a material that would be superconducting above room temperature, so that no refrigerant would be required. Suggest how the properties of such superconductors could be valuable in each of the following fields
Draw circuit that implements parallel bit-slice parity checker. Its input is X=xn-1xn-2...x1x0 and it should produce output F=1 iff input X has even parity. Make sure to label all signals and ports.
The nameplate on a 50-MVA, 60-Hz single-phase transformer indicates that it has a voltage rating of 8.0-kV: 78-kV. An open-circuit test is conducted from the low-voltage side, and the corresponding instrument readings are 8.0kV, 62.1A, and 206kW.
Two ways to implement a serial adder (A+B). it is necessary to modify the circuits to convert them to serial subtractors (A - B).Using the circuit to show the changes needed to perform A +2'scomplement of B.
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
how can i detect a cave entrance on a rocky cliff now buried under 20 feet earth rocks by use of vertical electric
A circular loop TV antenna with 0.01 m2 area is in the presence of a uniform -amplitude 300 MHz signal. When oriented for maximum response, the loop develops an emf with a peak value of 20 mV. What is the peak magnitude of B of the incident wave?
Use the even and odd decomposition of x h (t) to obtain its Fourier coefficients. This computation of the Fourier coefficients of x h (t) avoids some difficulties when you attempt to plot its magnitude line spectrum.
How much we need to pay for the electricity cost in 61 days when a water-desalination machine runs normally from 8AM to 4PM every day. (It draws 25A in its warming-up time (15 minutes) and draws, on average, 7A in its normal working time at 240V).
Determine the rms output voltage, the rms source current, the rms and average currents through SCRs, and the power factor.
a circuit consists of three elements in series. a source delivers 90 watts and one of the passive elements absorbs 20 watts. how much power does the third element absorb.
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