Analog Electronics - Study Mode
[#136] In phase-shift oscillator, a single RC network introduces a phase change of
Correct Answer
(D) 60°
[#137] The feedback factor β for a voltage shunt feedback amplifier is given by
Correct Answer
(A) $$x08eta = frac{{{{ ext{V}}_{ ext{f}}}}}{{{{ ext{V}}_{ ext{o}}}}}$$
[#138] Which of the following principles is applied while designing the output matching network for a high power Class-C amplifier?
Correct Answer
(A) Maximum Power Transfer Theorem
[#139] In the given circuit, V be = 0.7 V, V z = 5.3 V, β = 100. V 0 is
Correct Answer
(B) 10 V
[#140] A signal of 1 kHz is to be amplified, but the circuit board and wires pick up and store 60 Hz component from a nearby electric line. If this component is 40 dB higher than the desired signal, what filter stop band attenuation is necessary to ensure the signal remains 20 dB above the interferer level?
Correct Answer
(A) High pass filter with stop band attenuation of 60 dB at 60 Hz