Definition of Doppler Effect Doppler effect is the change in frequency of a wave for an observer moving relative to its source. The observer observes an upward shift in frequency when the wave source is approaching, and a downward shift in frequency when the wave source is retreating. In other words, the doppler effect refers to… Read More: What is Doppler Effect Definition Equation and Formula? [Answered] »
A sinusoidal voltage can be described by the equation: v(t) = VM sin (ωt + Φ) or v(t) = VM cos (ωt + Φ) where v(t) Instantaneous value of the voltage, in volts (V). VM Maximum or peak value of the voltage, in volts (V) T Period: The time taken for one cycle, in seconds… Read More: Sinusoidal Voltage Equation »
The Octal Number System is another type of computer and digital base number system. Octal Number System is very similar in principle to the previous hexadecimal numbering system except that in Octal, a binary number is divided up into groups of only 3 bits, with each group or set of bits having a distinct value… Read More: Octal Number System | Octal to Decimal Binary & Hexadecimal… »
On this page you can find information about the circuit breaker types or classification by the interrupting medium used i.e. oil, air, vacuum or gas etc. Oil Circuit Breakers Oil has an excellent dielectric strength which enables itself not only to be used as an interrupting medium but also as insulation within the live parts.… Read More: Circuit Breaker Types by Interrupting Medium Class »
Below you can find MCQ’s or Multiple Choice Questions related to the Transmission Lines in the field of Communications Engineering. Correct answers are in red & bold font. 1. What determines the velocity factor in transmission line? a) The termination impedance b) The center conductor resistivity c) Dielectrics in the line d) The termination impedance… Read More: MCQ Multiple Choice Questions Transmission Lines Communications Engineering »
Section 1: Electrical interview questions and answers about switchgear and protection What are the functions of protective relays? To detect the fault and initiate the operation of the circuit breaker to isolate the defective element from the rest of the system, thereby protecting the system from damages consequent to the fault. Give the consequences of… Read More: Electrical Engineering Interview Questions and Answers »