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Q. Briefly explain about Wye-delta transformation?
Certain network configurations cannot be reduced or simplified by series-parallel combinations alone. In some such cases wye-delta (Y- ) transformation can be used to replace three resistors in wye configuration by three resistors in delta configuration, or vice versa, so that the networks are equivalent in so far as the terminals (A, B, C) are concerned, as shown in Figure. For equivalence, it can be shown that
For the simple case when RA = RB = RC = RY, and RAB = RBC = RCA = R , Equations (1) and 2) become
why bypass capacitor is used
Allocative Efficiency: A neoclassical concept referring to allocation of productive resources (labour, capital, etc.) in a manner that best maximizes well-being (or 'utility') of
Example of unlike coplaner parallel force''
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1. A modi?ed NRZ code known as enhanced-NRZ (E-NRZ) operates on 7-bit words; invert- ing bits 2,3,6 and 7; and adding one parity bit to each word. The parity bit is chosen to make
Explain the Synchronous Up-Down Counters? The circuit of a 3-bit synchronous up-down counter and a table of its sequence are shown below. Alike to an asynchronous up-down count
Explain Suitability of ferrites for high frequency application. Ferrites are extensively used in micro wave equipments and in computers. Ferrites are advantageous at high frequ
Q. Physical operation of the junction of diode? The physical operation of the junction can be described in terms of the charge-flow processes. Usually there is a greater concen
(a) Design a 2 nd order Sallen and Key low pass active filter with the following characteristics: Nominal Cut-off Frequency: 1.6 kHz Variable Gain: 0 to 7.5 dB You may a
Q. A20-hp, 250-Vshuntmotor has a total armature - circuit resistance of 0.25 and a field-circuit resistance of 200.At no load and rated voltage, the speed is 1200 r/min, and the
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