Capacitance of 3 Core Cables: The Capacitance of 3 Core Cables is much more important than that of overhead line because in cables (i) conductors are nearer to each other and to the earthed sheath…
Regenerative Braking: Sometimes the energy of the load may have to be fed to the supply system. A Chopper in this mode is called regenerative. The chopper working as a switch is connected across the…
Performance of Long Transmission Lines Interview Questions and Answers: 1. What is the range of surge impedance for an overhead transmission line ? Ans. 400-600 Ω. 2. What is the range of surge impedance in…
Central Air Conditioning Systems Construction and Working: The central air conditioning systems serving the needs of large building or spaces are generally called the year-round air conditioning systems. They have a cooling capacity of 25…
Series Parallel Control of DC Motor: Series Parallel Control of DC Motor - Here two identical motors are coupled together mechanically to a common load. Two speeds at constant torque are possible in this method…
Hartley Oscillators using Op-Amp: Hartley Oscillators using Op-Amp circuit is similar to the Colpitts oscillator, except that the feedback network consists of two inductors and a capacitor instead of two capacitors and an inductor. Figure…
Marker Generator Block Diagram: Marker Generator - The sweep generator provides a visual display of the characteristics of the circuit or amplifier, but this is inadequate because it does not give any precise information of…
Torque Slip Characteristics of Induction Motor: The expression for Torque Slip Characteristics of Induction Motor (T(s)) is easily obtained by finding the Thevenin equivalent of the circuit to the left of ab in Fig. 9.12.…
Base load and Peak Load on Power Station: The changing load on the power station makes its load curve of variable nature. Fig. 3.13. shows the typical load curve of a power station. It is…
Zero Sequence Current Relay: This type of zero sequence current relay is similar to that of negative phase sequence relay as discussed in article Induction Type Negative Phase Sequence Relay. The relay is made to…
