Speed Torque Characteristic of Separately Excited DC Motor: The circuit equation of a Speed Torque Characteristic of Separately Excited DC Motor whose armature, having a total of Z conÂductors, is wound for 2P poles (the…
Digital Phase Meter Block Diagram and Working Principle: Digital Phase Meter - The simplest technique to measure the phase difference between two signals employs two flip-flops. The signals to be fed must be of the…
Wien Bridge Circuit Diagram: The Wien Bridge Circuit Diagram shown in Fig. 11.27 has a series RC combination in one arm and a parallel combination in the adjoining arm. Wien's bridge in its basic form,…
What is Radioactivity? - Definition and Types The phenomenon of spontaneous emission of powerful radiation exhibited by heavy elements is called radioactivity. It is an irreversible self-disintegrating activity as the elements breaks itself up (fission…
Carrier Current Protection of Transmission Lines: In modern high-power electrical systems it is necessary to have quick acting protections on long transmission lines. The requirements to be met by such protections are fully satisfied by…
Protection Circuits in Regulators: Protection Circuits in Regulators- The series regulator using transistors has no short circuit protection. If the load terminals are shorted accidentally then, Large amount of load current will flow. The pass…
Ring Distributor: A distributor arranged to form a closed loop and fed at one or more points is called a ring distributor. Such a distributor starts from one point, makes a loop through the area to…
What is Silicon Controlled Rectifier (SCR)? | Construction and Working of SCR: What is Silicon Controlled Rectifier (SCR)? - This semiconductor switching device is also known as a thyristor. It is a 4-layer, 3-junction, bistable…
Distance Protection Impedance Relay: Distance Protection Impedance Relay - It has already been pointed out that the impedance is directly proportional to the length of the line, and hence an impedance relay which measures impedance…
Phase Comparison Carrier Protection: The phase comparison pilot-relaying operates on the principle of comparing the phase position of the currents at the two ends of the protected section. The Phase Comparison Carrier Protection of these…
