Classification of Relays: The protective relay may be defined as an electrical device interposed between the main circuit and the circuit breaker in such a manner that any abnormality in…
Speed Control of DC Motor using Feedback Loop: An open-loop system can be converted into a closed-loop system by employing a speed control of dc motor using feedback loop, as…
Electrical Power Engineering Multiple Choice Questions and Answers (MCQs) Part 3: 102. The most suitable motor for a steel mill requiring a motor having high starting torque, wide speed range…
Electronic Instruments (Analog as well as Digital) Interview Questions and Answers: 1. Why ordinary voltmeter cannot be used in electronic circuits? Ans. A moving coil voltmeter draws a large current, hence…
Turgo Turbine Working Principle: The Turgo turbine is an impulse water turbine designed for medium head applications. Operational Turgo Turbines achieve efficiencies of about 87%. It works with net heads…
Reluctance Pulse Pick up Transducer: This Reluctance Pulse Pick up Transducer is very suitable for the measurement of shaft speed and liquid flow. It is based on the principle that…
Current Transformer Tests: Current Transformer Tests are generally mounted in the switchgear when it is delivered to site and may not be easily accessible. The normal tests which are carried…
SCR Control Circuit Diagram: Pulse Control - The simplest of SCR Control Circuit Diagram is shown in Fig. 19-8(a). If SCR1 was an ordinary rectifier, the ac supply voltage would…