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Explain how suppressor grid eliminates effect of secondary emission in pentode
Ans: Suppressor grid is placed in between plate and screen grid. It's connected with the cathode and obtains the same potential as that of cathode. As suppressor grid is at negative potential with respect to plate, secondary electrons emitted from the plate are repelled back to plate or suppressed by it. Hence the effect of secondary emission is eliminated.
In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide extra loudness. For example, the note at 110 Hz has two strings at this frequency.
Briefly explain with principle, the construction and working of Nicol prism. Why the angle of incidence on Nicol prism would be around 14 o .
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A helicopter is ascending vertically with a constant speed of 6 meters per second relative to the ground. At the immediate the helicopter is 60 meters above the ground it rele
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