GATE EC 2021: Analog Circuits Quiz 6 (App update required to attempt this test)

Consider the feedback circuit shown in figure.

The feedback network used in the circuit has …………………… type of feedback topology.

A class B push pull amplifier must deliver low of audio power to the output load. If the output transformer is 80% efficient then what is the minimum average dissipation rating required for each transistor ?

Consider an amplifier circuit shown in figure. If the transistors θ₁ and θ₂ parameters g_m1, r_π1 and g_m2, r_π2 respectively then voltage gain |Av| is

For the Darlington amplifier shown in figure below as :

Both Q₁ and Q₂ are identical with h parameter h_fc = 100, R_E = h_ie = 1 kΩ. If z parameter of the circuit diagram is given as

Then  is

For the feedback amplifier as shown the transconductance g_m is _____mA/V