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Q. A single-phase, 3-kVA, 220:110-V, 60-Hz transformer has a high-voltage winding resistance of 0.3 , a low-voltage winding resistance of 0.06 , a leakage reactance of 0.8 on its high voltage side, and a leakage reactance of 0.2 on its low-voltage side. The core loss at rated voltage is 45 W, and the copper loss at rated load is 100W. Neglect the exciting current of the transformer. Find the per-unit voltage regulation when the transformer is supplying full load at 110 V and 0.9 lagging power factor.
(a) Give three different ways how electro-magnetic interference can be reduced in twisted pairs based transmission. (b) Noise are unwanted signals affecting transmission. Lis
Q. Describe the following phasor equations represented in the time domain: (a) ¯ E = K1e-¯ γz (b) ¯ E = K2e ¯ γz where z is the space coordinate, K1 and K2 are constants,
Q. What do you mean by Conditional selection? Conditional selection: When a marker is instructed to create a connection from a given incoming trunk to a given outgoing trunk, t
Series circuit Total resistance, R T = R1 + R2 + R3 The current I is the same in all parts of the circuit , I = I 1 = I 2 = I 3 The voltage drop at each resistor, V1,
Let the modulating signal m(t) be a sinusoid of the form m(t) = cos 2πf m t, f m c , and let the carrier signal be cos(2πf c t + φc). (a) Determine the conventional AM signal,
Q. Determine the Fourier series for the periodic wave - forms given in Figure.
1. Introduction The objective of this assignment is to design and evaluate a stabilised discrete linear power supply. The power supply requires to be designed according to t
Q. Given that V 0 = 10 V, determine IS in the circuit drawn in Figure.
The contents of compressed gas cylinders can range from highly flammable substances, such as hydrogen, propane and ethane (acetylene), to toxic gases, such as chlorine, sulphur dio
Direct Tapping and Unmetered Connections Direct Tapping Direct tapping of power by non-customers is widely prevalent. This is mainly in domestic and agricultural categori
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