Pole Changing of Induction Motor: Pole Changing of Induction Motor - For a given frequency, the synchronous speed is inversely proportional to the number of poles. Synchronous speed, and therefore, motor speed can be changed…
Pole Amplitude Modulation Induction Motor: Pole changing method as already discussed allows a change of speed by a factor 2. In some applications, speed change is required only by a small amount, e.g. some fan…
Polarised Relay: This Polarised Relay is very frequently employed where operation is required in two directions. In a d.c. Polarised Relay contact A is closed when current in the operating winding flows in one direction…
Polar Plot for Frequency Response: One of them is the Polar Plot for Frequency Response representation. The transfer function in the frequency domain is obtained by substituting jω for s as complex function of ω.…
Polar Curve in illumination | Rousseau's Construction: Polar Curve in illumination - All discussions made so far were based on the assumption that the luminous intensity or the candle power from a source is uniformly…
Point Contact Diode Construction and Working: The point contact diode is basically constructed by touching a metallic whisker to an exposed surface of an N-type semiconductor substrate. The semiconductor used in the point contact diode…
PN Junction Semiconductor: Two blocks of PN Junction Semiconductor material are represented in Fig. 1-17; one block is p-type material, and the other is n-type. The small circles in the p-type material represent holes, which…
PN Junction Forward Bias: Consider the effect of an external bias voltage applied with the polarity of PN Junction Forward Bias shown in Fig. 1-23; positive on the p-side, negative on the n-side. The holes…
PN Junction Diode Working Principle: A PN Junction Diode Working Principle explains about the ability to permit substantial current flow when forward-biased, and to block current when reverse-biased. Thus, it can be used as a…
PN Junction Diode Interview Questions and Answers: 1. What is a P-N junction? Ans. The contact surface between the layers of P-type and N-type semiconductor pieces placed together so as to form a P-N junction is…