Electronics Engineering Multiple Choice Questions and Answers (MCQs) Part 5: 198. Which one of the following devices can be turned 'ON' or 'OFF' by applying gate signal ? (a) SCR.…
Thyristor Control of Electric Motors Interview Questions and Answers: 1. Why the thyristor control is preferred over Ward Leonard system of speed control ? Ans. The thyristor control has some…
Power Converters Interview Questions and Answers: 1. What is freewheeling diode? Ans. Freewheeling diode is a bypass or commutating diode. It is connected across motor terminals to allow for dissipation of…
Regulated and Switching Power Supplies Interview Questions and Answers: 1. What is a regulated power supply? Ans. A regulated power supply is an electronic circuit designed to provide constant dc voltage…
Step Down Chopper with RLE Load Working Principle: The choppers are widely employed for speed control of dc motors in industrial and traction drives. Figure 27.30 (a) shows the basic…
Class D Power Amplifiers - Circuit Diagram, Operation and Applications: Historically, audio amplifiers have been configured as class A, class B or class AB and the art of design is…
Signal Conditioning in Instrumentation Articles: Signal Conditioning System: The measurand, which is basically a physical quantity, is detected by the first stage of the instrumentation or measurement system. The first…
High Voltage Test on Transformer: High Voltage Test on Transformer are very important and costly apparatus in power systems. Great care has to be exercised to see that the transformers…