SSC JE Electrical Engineering 2017 Set 3 Paper

Question : 121 of 200

Marks: +1, -0

In an RC-coupled common Emitter amplifier :

coupling capacitance affects the $h_\f$ response and bypass capacitance affects the $h_\f$ response only
both coupling and bypass capacitance affect the $h_\f$ response only
both coupling and bypass capacitance affect the $h_\f$ response only
coupling capacitance affects the $h_\f$ response and the bypass capacitance affects the $h_\f$ response

Solution:

Coupling capacitor (C) are use to decuple AC and DC signal so as not to disturb quiesecnt point of the circuit when AC signal are injected at the Input.
ByPass capacitor (

C_\E

) are used to force signal current around elements by providing a low inpendance path at higher frequency.

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