Difference between PCM, Adaptive Delta Modulation and Differential Pulse Code Modulation: The difference between PCM, Adaptive Delta Modulation and Differential Pulse Code Modulation is given in table below Sl no Parameter PCM Delta modulation (DM)…
Communication Engineering Interview Questions and Answers: 1. Define Phase Modulation. Ans. In phase modulation, the phase of the carrier varies according to amplitude variations of the modulating signal, The PM signal can be expressed mathematically…
Engineering Physics Interview Questions and Answers: 1. Define stress on a body. Ans. The internal force developed per unit area in the body during the application of external force or load is called stress. Within…
Environmental Engineering Interview Questions and Answers: 1. Define Environment. Ans. The physical, chemical and biological presence of living and non-living things outside an individual species is called as its environment. 2. Define the term Environment…
Coal Burner Working Principle: The coal burners are employed to fire the pulverised coal along with primary air into the furnace. The secondary air is admitted separately below the burner, around the burner or elsewhere…
Hydrological Cycle or Rain Evaporation Cycle: Hydrological Cycle or Rain Evaporation Cycle is a process by which moisture from the surface of water bodies covering the earth's surface transferred to the land and back to…
Series Capacitor - Working Principle, Phasor diaagram, Application: In EHV and UHV transmission lines, series capacitor are connected in series with the line to reduce the effect of inductive reactance XL between the sending end…
Servo Type Voltage Regulator Working Principle: The main features of a servo type voltage regulator using an amplidyne is depicted in Fig. 19.8. The servo type voltage regulator system comprises of a constant voltage main…
AC Excitation System - Block diagram and Working Principle: This AC Excitation system consists of an alternator and thyristor rectifier bridge directly connected to the main alternator shaft. The main exciter may either be self…
DC Excitation System Working Principle: In dc excitation system, the system has two exciters—the main exciter (a separately excited dc generator providing the field current to the alternator) and a pilot exciter (a compound wound…
