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Q. Three single-phase, 10-kVA, 2400/120-V, 60- Hz transformers are connected to form a three- phase, 4160/208-V transformer bank. Each of the single-phase transformers has an equivalent series impedance of 10 + j25 referred to the high-voltage side. The transformer bank is said to deliver 27 kW at 208 V and 0.9 power factor leading.
(a) Draw a schematic diagram of transformer connections, and develop a per-phase equivalent circuit.
(b) Determine the primary current, primary voltage, and power factor.
(c) Compute the voltage regulation.
how does Proportional band affect the performance of control system?
The mobility of free electrons and holes for pure silicon are 0.13 and 0.05 m2/V-S respectively. Find the intrinsic conductivity for silicon. Assuming ni = 1.5x 1016/cm3 at room te
Equal volumes of all gases contain the samenumber of molecules when the volumes are measured at the same p and T. Therefore for a given volume at the same p and T, with the same
Question 1: (a) Describe the three main types of electrical fault which might occur in a circuit. (b) What is three phase electric power? Give its advantages. (c) Explain th
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Consider a CS JFET amplifier with the following parameters : R 1 = 350 k; R 2 = 100 k, R SS = 1200 , R D = 900 , R L = 1000 , R S = 2000 , ro = 15 k,gm = 6 × 10 -3 S,
define all the symbols with their unit
why we plot graph to find bandwidth is drawn b/w av/avmax v/s frequency not av v/s frequency?
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