Search Results for: generator

Protection of AC Generators and Motors Interview Questions and Answers

Protection of AC Generators and Motors Interview Questions and Answers: 1. What are the common types of generator faults ? Ans. The common types of faults occurring in synchronous generators are enumerated below. Stator winding faults — phase-to-phase faults, phase-to-earth faults and inter-turn faults. Rotor winding faults — conductor-to-earth faults, open-circuit faults, inter-turn faults. The […]

Protection of AC Generators and Motors Interview Questions and Answers Read More »

Clock Generator 8284A

Clock Generator 8284A: During fetch and execute instructions, the 8086 and 8088 processors require clock pulse which has about 10 ns rise and fall times. The logic 0 level of the clock is 0.5 V to 0.6 V, logic-1 level is about 3.9 V to 5 V and the clock duty cycle is about 33%.

Clock Generator 8284A Read More »

Square Wave Generators

Square Wave Generators: Diode clippers can be used to remove the curved portion of the sinusoidal wave to give square waves. The operational amplifier together with an integrator, can be used to generate a square wave. The simplest form of the Square Wave Generators is the astable multivibrator shown in Fig. (10.30). where two junction

Square Wave Generators Read More »

Direct Connected Generator Protection

Direct Connected Generator Protection: Direct connected generators are normally of smaller ratings and a typical scheme of Direct Connected Generator Protection for a 30 MW generator is shown in Fig. (6.21). It consists of the following protections: Unbiased differential protection. Backup overcurrent protection. Negative phase sequence protection. Standby earth fault. In addition to these protections

Direct Connected Generator Protection Read More »

Generator Faults

Generator Faults: Generator faults can be considered under the following heads. (a) Stator Faults: These include the following: Phase-to-earth faults. Phase-to-phase faults. Inter-turn faults. Most faults occur in the stator windings and their connections and majority of these are earth faults. Phase faults and inter-turn faults an less common, these usually develop into an earth

Generator Faults Read More »

Scroll to Top