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An industrial load takes 80,000 units in a year, the average power factor being 0·707 lagging. The recorded maximum demand is 500 kVA. The tariff is Rs 120 per kVA of maximum demand plus 2·5 paise per kWh. Calculate the annual cost of supply and find out the annual saving in cost by installing phase advancing plant costing Rs 50 per kVAR which raises the p.f. from 0·707 to 0·9 lagging. Allow 10% per year on the cost of phase advancing plant to cover all additional costs.
Porter's Five Competitive Forces
Find the discrete-time, pure prediction Wiener filter. - Determine and plot the PSD for the random sequence and the power transfer function.
a DC series machine ( 9.25 kW, 185 V, 1500 RPM) has Ra+Rsr = .3 ohms. The data for the magnetization curve are: Ia 0 10 20 30 40 50 60 Ea 10 50 106 156 184 200 208 Determine the terminal voltage at Ia = 20 amps, 40 amps and 60 amps.
determine the inside surface temperature of the plane. How much heat the passenger, sitting by the window, will loose or gain assuming that the passenger's body temperature is 36 oC. Assume negligible radiation heat transfer inside or outside the ..
Assuming that ideal filters are available, what is the lowest frequency at which the signal can be sampled and subsequently recovered in its analog form without distortion using a low pass filter?
A half-wavelength antenna is made of copper wire with conductivity a = 5.7 x 107 Sim. The antenna is 3-mm thick and 1.5-m long. Calculate the impedance of the antenna and its efficiency when radiating in free space.
A 480-V, 60 Hz, 400-hp 0.8-PF-leading eight-pole Δ-connected synchronous motor has a synchronous reactance of 1.0Ω and negligible armature resistance. Ignore its friction, windage, and core losses for the purposes of this problem. If this motor i..
(1) Can we have Darlington transistor made up of an NPN and a PNP or do the two transistors have to be of the same type (2) Amplifiers has a power gain of 1,000 or 30dB. Where is that power coming from
Design a precision full-wave rectifier as shown in Fig.(a) to provide a voltage gain of Af = vO ⁄ vS = 50. The input voltage is vS = 0.01 sin (200πt).
Write a The term paper projects are: ELECTROENCEPHOLOGRAPHY, ELECTROCARDIOGRAPHY, ELECTRONIC PROSTHESIS/PROSTHETICS, REMOTER SURGERY and MEDICAL ALERT DEVICES.
What are the test inputs we use to evaluate steady-state error (SSE). How many integrations in the forward path are needed (type of the system) to get zero SSE for each of these test inputs.
Assume the motor is connected in wyne and that each branch can be represented by a resistance R in series with an inductive reactance X. (a) Calculate the value of R and X. (b) What is the phase angle between the line current
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