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Q. A 75-kVA transformer has an iron loss of 1 kW and a full-load copper loss of 1 kW. If the transformer operates on the following load cycle, determine the all-day efficiency:
8 hours full load at unity power factor
8 hours no load
8 hours one-half full load at unity power factor
Q. In a depletion MOSFET for which V P = 3 V and I DSS = 11mA, the drain current is 3mA when v DS is set at the largest value that will maintain ohmic region operation. Find v G
Uses of FET IGBTs (Insulated-gate bipolar transistor) see application in switching internal combustion engine ignition coils, in which fast switching and voltage blocking cap
derived expression for reluctant torque in rotating electrical machine
Q. How do you calculate the insulation resistance of transformer and what is the minimum value? Ans. The insulation resistance of the transformer will be calculated by using
Sectoral Overview and Enabling Framework Previously, you have studied about several Acts and Policies relevant to the power sector, their aims, main features and implications
Q. Two stations (using identical antennas, with diameters of 50λ and aperture ef?ciencies of 0.6 at 35 GHz) are separated by 30 km. With negligible antenna losses, antenna connecti
Service standards: The forum of regulators (constituted through the central government for consistency in regulation in the area of distribution) will decide the basic framewo
With respect to serial communication define the parity. Besides the synchronization given by the use of start and stop bits, an additional bit termed as a parity bit may opt
This example is concerned with steady-state sinusoidal analysis by using mesh equations and MATLAB. Let us consider the circuit shown in Figure and find the input impedance at the
A magnetic crane used for lifting weights can be modeled and analyzed as a simple magnetic circuit, as shown in Figure. Its configuration consists of two distinct pieces of the sam
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