Three Phase Transformer Connections: In generation, transformation, transmission and utilization of electric energy it can be shown that it is economical to use the three-phase system rather than the single-phase. For Three Phase Transformer Connections,…
Shifted Unit Step Function: This Shifted Unit Step Function is defined by the equation for a step function which changes abruptly at the time t = + a. In general, the step function has unit…
Magnetic Modulator: The most reliable substitutes for electromechanical choppers are magnetic modulators. These devices reach a null stability as low as 10 μV, but their response time is often less than 2 Hz and the…
Slip Test on Synchronous Machine: Direct and quadrature axis reactances of a salient-pole synchronous machine can be estimated by means of a test known as the Slip Test on Synchronous Machine. The machine armature is…
What is Power Electronic Converter?: What is Power Electronic Converter? - Since the introduction of the thyristor, the Power Electronic Converter technology has progressed through intense technological evolution for the last four decades and has…
Constant Current System for Speed Control of DC Motor: For certain services, where there is a possibility of the motors being stalled such as with excavators, ship's windlasses etc. the constant current system is advantageous…
Sugar Mill Process: The Sugar Mill Process the crystals are separated from the syrup by means of a centrifuge. The separation is accomplished by the centrifugal forces set up. The centrifuge is started to a…
Advantages of High Transmission Voltage: The Advantages of High Transmission Voltage at high voltages due to the following reasons : (i) Reduces volume of conductor material: Consider the transmission of electric power by a three-phase…
Static Scherbius Drive Circuit Diagram: A basic scheme of a Static Scherbius Drive Circuit Diagram converter cascade, that is employed for recovery of slip power in electrical form itself, is given in Fig. 11.42. For…
Features of Intel 8279 Programmable Keyboard Display Interface: The Intel 8279 is a general purpose programmable keyboard and display I/O interface device designed for use with Intel microprocessors. The Features of Intel 8279 Programmable Keyboard…