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Question

A triode has a plate resistance of 10kΩ and amplification factor 24 . If the input signal voltage is 0.4V(r.m.s) , and the load resistance is 10kΩ, then, the output voltage(r.m.s.) is

A
4.8V
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B
9.6V
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C
12.0V
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D
none of these
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Solution

The correct option is A 4.8V
The voltage gain by a triode is-
V=μ1+RpRL×V
We put the values-
V=241+(10kΩ)(10kΩ)×(0.4 Volt)
V=(241+1)×0.4=12×0.4=4.8 Volt


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