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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.
Explain about the Heat Extraction? a) A body of mass M has a temperature-independent precise heat C. If the body is heated reversibly from a temperature T i to a temperature
what is the significne of electric field?
Mechanical energy E of particle, system or object is explained as the sum of kinetic energy K and potential energy U, i.e. E = K + U. It is a scalar quantity having dimensions [ML
state and explain pauli''s exclusion principle
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what is electric field
what is the on earth
A LADDER OF LENGTH 4m weighing 300N is placed against vertical wall . the coefficient of friction between the wall and the ladder is 0.3.The ladder in addition to its own weight ha
A single-phase transformer has 2400 turns on the primary and 600 turns on the secondary. Its no-load current is 4A at a power factor of 0.25 lagging. Suppose the volt drop
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