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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.
why soft iron is used in earphone
a particle of xkg pended by two light inextensible strings of AB and BC of lengths 8cm and 6cm respectively with the mass x attached to B. The end A and C are fixed at the same and
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A skydiver falls d1 = 495 meters in t1 = 22 s before opening his parachute. After the chute opens, he falls an additional d2 = 470 meters in t2 = 56.5 s. (a) Write an expression t
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Elevator Problem
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