Electric Converter: Electric Converter - The speed of a dc motor can be varied by varying the armature voltage or the field current, for which a variable dc supply is required. The speed of an…
Electric Braking of Separately Excited DC Motor: The electric braking of separately excited dc motor is show in Figure 3.31. Figure 3.31 (a) illustrates a simplified representation of a single phase fully controlled rectifier supplying…
Electric Arc Welding - Definition, Working Principle, Types and Applications: Definition - By definition, arc welding is that process in which the pieces of metal to be welded are brought to the proper welding temperature…
Electric and Magnetic Fields from Overhead Lines: Biological effects of Electric and Magnetic Fields from Overhead Lines and even cables in close proximity of buildings have recently attracted attention and have also caused some concern.…
Effects of Short Circuit Faults on Power System: Depending upon power circuit voltage and configuration, method of neutral connection, presence of regulating devices and the speed of disconnection of the faulted circuit section, various types…
Effects of Negative Feedback in Amplifiers: Decibels of Feedback - Effects of Negative Feedback in Amplifiers can be measured in decibels. A statement that 40 dB of feedback has been applied to an amplifier means…
Effects of Harmonics: The relationship between line and phase quantities for wye and delta connections as derived earlier are strictly valid only if the source voltage is purely sinusoidal. Such a waveform is an ideal…
Effects of Ground on Antenna Performance: The Effects of Ground on Antenna Performance on a detailed discussion of the interaction (see Figure 9-11). Ungrounded Antennas: As was know, when a radiation source is placed near a…
Effects of Antenna Height: At low and medium frequencies, where wavelengths are long, it often becomes imÂpracticable to use an antenna of resonant length. The vertical antennas used at those frequencies are too short electrically.…
Effect of temperature on PN diode characteristics: Temperature on PN diode characteristics is very important consideration in the analysis or design of electronic devices or systems. It affects virtually all of the characteristics of a…
