Electromagnetic Interference: To control ON/OFF operation of ac devices we can use electromagnetic relay. This relay has both normally open and closed contacts. When a current is passed through the coil of the relay, the…
Star Delta Control Circuit: The star delta transformation is another technique useful in solving complex networks. Basically, any three circuit elements, i.e. resistive, inductive or capacitive, may be connected in two different ways. One way…
Three Phase AC Series Commutator Motor: This machine has a 3-phase stator winding similar to that of an ordinary induction motor and may be wound for high voltage if required. The rotor carries a winding…
Engineering Mechanics Basic Interview Questions and Answers: 1. Define Engineering Mechanics. Ans. It is defined as the branch of physical science which deals with the behavior of a body at rest or motion under the…
Franklin Oscillator Circuit Diagram: A simple L-C oscillator, called the Franklin oscillator and its circuit diagram is shown in Fig. 21.12. Here two CE amplifier stages are employed to provide 360° phase shift from input to…
CCIF Intermodulation Distortion: In the second method of carrying out an CCIF Intermodulation Distortion test, the two test signals used have equal amplitude, and relatively high but slightly different frequencies. When non-linear distortion is present,…
Rankine Cycle (Simple Steam Power Cycle): Rankine cycle is the theoretical cycle on which the steam turbine (engine) works. Boiler Refer the process (4) to (1): Feed water is passing to the boiler. Heat is…
What is BJT Beta Rule? Like transfer of primary and secondary winding impedances of a transformer, resistance from one part of a transistor circuit can be referred to another parts. For instance, resistance of collector…
Fast Fourier Transform Interview Questions and Answers: 1. Why FFT is needed? Ans. The direct evaluation of DFT using the formula requires N2 complex multiplications and N(N - 1) complex additions. Thus for reasonably large…
Interference of Electromagnetic Waves: Interference of Electromagnetic Waves occurs when two waves that left one source and travelled by different paths arrive at a point. This happens very often in high-frequency sky-wave propagation and in…
