Power electronics Viva voce or interview questions part-11
Q-251 What is variable DC linked inverter? Ans An inverter is called variable DC linked inverter if the input voltage is controllable. Q-2...Read More
Power electronics Viva voce or interview questions part-10
Q-226 What are the two modes of operation of a TRIAC? Ans *Junction gate operation *Remote gate operation Q-227 What are merits of TRIAC? ...Read More
Power electronics Viva voce or interview questions part-9
Q-201 On what basis choppers are classified in quadrant configurations? Ans The choppers are classified depending upon the directions of cu...Read More
Power electronics Viva voce or interview questions part-8
Q-176 What is interring base resistance? Ans Inter base resistance is the resistance between 2 bases Q-177 What is intrinsic standoff ratio...Read More
Power electronics Viva voce or interview questions part-7
Q-151 What is the maximum firing angle of R-triggering circuit and why? Ans The maximum firing angle is 90°. This is because the source vo...Read More
Power electronics Viva voce or interview questions part-6
Q-126 What is pinch off voltage? Ans The voltage across gate to source at which the drain to source current becomes zero is called pinch o...Read More
Power electronics Viva voce or interview questions part-5
Q-101 Why does high power dissipation occur in reverse blocking mode? Ans High power dissipation occurs because as voltage increases beyon...Read More
Power electronics Viva voce or interview questions part-4
Q-76 What is the advantage of ON-OFF control? Ans Due to zero-voltage and zero current switching of thyristors, the harmonics generated by...Read More
Power electronics Viva voce or interview questions part-3
Q-51 What are the main classification of inverter? Ans a. Voltage Source Inverter b. Current Source Inverter Q-52 Why thyristors are not...Read More
Power electronics Viva voce or interview questions part-2
Q-26 What is meant by input power factor in controlled rectifier? Ans The input power factor is defined as the ratio of the total mean in...Read More
Power electronics Viva Voce or Interview questions part-1
Q-1 Why IGBT is very popular nowadays? Ans a. Lower heat requirements b. Lower switching losses c. Smaller snubber circuit requirements Q...Read More
English Speaking Basics - Section I
English Speaking Basics - Section I English Speaking Basics is for English speaking beginners who need help to understand the basics of spea...Read More
All terms related to illumination
Important Terms: Light: It is defined as the radiation energy from a hot body which produces the visual sensation upon the human eye. It ...Read More
SOME IMPORTANT QUESTION OF ILLUMINATION
Question 1. What are the characteristics of good illumination? Answer : The light should not strike directly the eyes. The type and size...Read More
Energy Conversion In Power generation system
Energy Conversion Energy Conversion Using Steam The combustion of coal, gas or oil in boilers produces steam, at high temperatures and pres...Read More
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