Power Supply for Electric Traction Interview Questions and Answers: 1. What is the arrangement of power supply on Kanpur-Tundla section ? Ans. 132 kV supply is taken at one point from the supply authorities and…
Power Supply Decoupling: Power Supply Decoupling - High-power amplifiers require high supply current levels, so unregulated power supplies are often employed to avoid the power wasted in a series regulator. The high ripple voltage that…
Power Sources for Welding Process: Both dc and ac are used for electric arc welding, each having its particular applications; in some cases either is suitable. The electric properties of the arc determines the requirements…
Power Semiconductor Devices Interview Questions and Answers: 1. Give the broad classification of power semiconductor devices. Ans. Power semiconductor devices can be broadly classified into three categories viz. power diodes, thyristors and transistors. 2. Which are…
Power Plants Economics Interview Questions and Answers: 1. State factors on which generating cost depends. Ans. The generating cost per unit (kWh) of energy depends upon the cost covering the purchase, installation and erection of…
Power on Reset Circuit in 8051: On reset, the PC sets to 0000H which causes the 8085 to execute the first instruction from address 0000H. For proper reset operation reset signal must be held low…
Power Measurement in Single Phase Circuit by Wattmeter: Wattmeters are generally used to measure power in the circuits. A wattmeter principally consists of two coils, one coil is called the current coil, and the other…
Power in Three Phase Circuits: Measurement of power by a wattmeter in a single phase circuit can be extended to measure Power in Three Phase Circuits. From earlier Section, it is clear that we require…
Power Frequency Overvoltages in Power Systems: The Power Frequency Overvoltages occur in large power systems and they are of much concern in EHV systems, i.e. systems of 400 kV and above. The main causes for…
Power Flow through Transmission Line: So far the transmission line performance equation was presented in the form of voltage and current relationships between sending-and receiving-ends. Since loads are more often expressed in terms of real…
