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Explain Overhead Lines and Transformers?
Overhead lines absorb reactive power when fully loaded. A line with a current I A, a line reactance of XL ?/phase absorbs I2 XL VArs/phase. On light loads, the shunt capacitance of a long line may become predominant and the line becomes VAr generator producing V2 /XC VArs/phase. Transformers always absorb reactive power.
A three-phase, 34.5-kV, 60-Hz, 40-km transmission line has a per-phase series impedance of 0.2+j0.5/km. The load at the receiving end absorbs 10 MVA at 33 kV. Calculate the follow
Operation of MOSFET The operation of a metal-oxide-semiconductor field-effect transistor which is abbreviated as MOSFET can be separated into three modes, depending upon the
What are the cautions to be taken before starting work on electrical installations? Ans: Before starting any electrical works on installations disconnect the power supply to
Zener breakdown: Zener Breakdown takes place in very thin junction i.e. when both sides of junction layer is narrow. When a small reverse bias voltage is applied a Very strong
Problem (a) Figure gives the basic circuit of the diode limiter. Assuming that the diodes are ideal sketch and annotate the waveforms of the input voltage vi(t) and the load
Q. What do you mean by Most and least significant digits? The MSD (most significant digit) in a number is the digit which represents the largest part of the number. Therefore i
Explain time division switching? Time Division Switching: A switching element can be shared by number of concurrently active speech circuits. It is the princi
You have been requested by your Senior Engineer to design an Engine Control Unit (ECU) and prepare a report detailing your proposed solution. The client requires a design for a mic
Q. What do you mean by Quartz crystals? Synthetic quartz is composed of Silicon and Oxygen (Silicon Dioxide) and is cultured in autoclaves under high pressure and temperature.
Explain Load Flow Analysis The method commonly used for load flow analysis is the nodal analysis. The nodal analysis method is given in many books on circuit theory and is base
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