Armature Resistance Control Method of DC Motor: In this armature resistance control method of speed control, reduced speeds are obtained by inserting resistance in the armature circuit. It may be employed with series, shunt and…
Three Modes of Heat Transfer (Conduction, Convection, Radiation): A heated substance will give off heat to another substance at a lower temperature. The three different modes of heat transfer are Conduction, Convection and Radiation. 1.…
Series Connection of Coupled Inductors: Let there be two inductors connected in series, with self inductances L1 and L2 and mutual inductance of M. Two kinds of Series Connection of Coupled Inductors are possible; series…
Gauss Seidel Method: The Gauss Seidel Method (GS) is an iterative algorithm for solving a set of non-linear algebraic equations. To start with, a solution vector is assumed, based on guidance from practical experience in…
Current Source Inverter Control of Induction Motor: A thyristor Current Source Inverter Control of Induction Motor (CSI) is shown in Fig. 6.45. Diodes D1-D6Â and capacitors C1-C6 provide commutation of thyristors T1-T6, which are fired with…
Classification of Electric Drive: Classification of Electric Drive are normally classified into three groups, based on their development, namely group, individual and multi motor electric drives. If several groups of mechanisms or machines are organised…
Capacitance of Two Wire Line: Consider a Capacitance of Two Wire Line shown in Fig. 3.3 excited from a single-phase source. The Capacitance of Two Wire Line develops equal and opposite sinusoidal charges on the…
Differential Amplifier Interview Questions and Answers: 1. What is differential amplifier? Ans. An amplifier, which is designed to amplify the difference between two input signals is called the differential amplifier. The differential amplifier is also referred…
What is a Digital Instrument?: Digital instrument are rapidly replacing their analog counterparts. The parameters of interest in a laboratory environment are (i) voltage (ii) current (iii) power (iv) frequency, and (v) logic. We shall…
Digital to Analog Converter Circuit Diagram: The basic Digital to Analog Converter Circuit Diagram using Op Amp is shown in Fig. 17.18(a). The input signal is applied to the inverting terminal of the opamp. In…
