state two characteristics of a good thermion emitter
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Two characteristics of thermion emitter : (1) : Thermion emitter should have high melting point so that it does not melt even at high temperature.. (2) : Work function of thermion emitter should be low so that less heat energy is required to emit electron from its surface.
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2
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Two characteristics of thermion emitter : (1) : Thermion emitter should have high melting point so that it does not melt even at high temperature.. (2) : Work function of thermion emitter should be low so that less heat energy is required to emit electron from its surface.......
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