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A factory takes a steady load of 200 kW at a lagging power factor of 0·8. The tariff is Rs 100 per kVA of maximum demand per annum plus 5 paise per kWh. The phase advancing plant costs Rs 500 per kVAR and the annual interest and depreciation together amount to 10%.Find:(i) the value to which the power factor be improved so that annual expenditure is minimum
(ii) the capacity of the phase advancing plant
(iii) the new bill for energy, assuming that the factory works for 5000 hours per annum.
A turn contains three blue and seven white chips. A chip is selected at random. If the color of the chip selected is white, it is eplaced and two more white chips are added to the urn.
Suggest an additional resource constraint that will prevent the deadlock in Problem 6.6 but still permit the boundary between input and output buffers to vary in accordance with the present needs of the processes.
Find the estimator g(Y) of X, in terms of F, that minimizes the mean square error MSB: = E[(X - g{Y))2],
Three loads (R1, R2 and R3) are connected in series to a 120-VDC source. The values of E1 and E2 are measured and found to be 32 V and 8 V, respectively. What is the value of E2
Excitation is provided by a 140-turn, 30 ohm coil. Determine the voltage required to establish a flux density of 1.56T. The reluctance of the magnetic circuit, when operating at this flux density is 768 A-t/Wb.
3) What is the RMS voltage of the source in a single loop series circuit if Irms = 1A-30° and Ztotal = 100 65° 4) What is the power dissipated by an electric heater with a resistance of 20? drawing a current waveform of i(t) = 10 sin(60t) Amps
1. Find the volume of a cylinder whose base is 9 inches in diameter and whose altitude is 12 inches. 2. Find the following values a. cos 77 degree 3'30" b. sin 18 degree 40' 3. In a right triangle ABC, if the leg a=8 and the leg b=5. what is the angl..
Design a discrete transistor circuit that produces a full-scale output of 5 V for a maximum motor speed of 60 revolutions per second.
(1) In a lab experiment on parallel Resonance circuit with switch closed, What is the phase relationship between Ic and IL at Is minimum (2) Why is the source current , Is, minimum at a given frequency
A majority gate returns a true output if more than half of the inputs are true. So, a 3-input majority gate outputs a ‘1' if at least two of its inputs are ‘1'. A minority gate generates the complement, that is it outputs ‘0' if at least two of th..
Calculate the temperature drop from the centerline to the surface for a 1-inch OD rod having a thermal conductivity of 15 BTU/hrft F (26 W/mK), if the rate of heat removal from the rod surface is 500,000 BTU/hrft^2 (1.5775 MW/m^2).
An electron is released from rest at the negative plate of a parallel plate capacitor. If the distance between the plates is 5 mm and the potential difference across the plates is 5 V, with what velocity does the electron hit the positive plate
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