Multiple choice

An ac signal of 1 V (rms) is applied to the grid of a triode for which (mu) u = 10 and plate resistance Rp = 15 k ohm. The signal frequency is low enough for the interelectrode capacitance to be negligible. The load impedance ZL = (2 + j 10) k ohm. Calculate voltage gain of the amplifier.

  1. 0.404

  2. 4.047

  3. 8.231

  4. 1.500

  5. -

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plate resistance (Rp) = 15 kilo ohm Amplification factor (mu) u = 10 Load impedence (ZL) = (2 + j10) kilo ohm