1
GATE ECE 2006
MCQ (Single Correct Answer)
+1
-0.3
The input impedance (Zi) and the output impedance (Zo) of an ideal transconductance (voltage controlled current source) amplifier are
A
Zi = 0, Zo = 0
B
Zi = 0, Zo = $$\infty$$
C
Zi = $$\infty$$, Zo = 0
D
Zi = $$\infty$$, Zo = $$\infty$$
2
GATE ECE 2005
MCQ (Single Correct Answer)
+1
-0.3
The cascode amplifier is a multistage configuration of
A
CC-CB
B
CE-CB
C
CB-CC
D
CE-CC
3
GATE ECE 2004
MCQ (Single Correct Answer)
+1
-0.3
Assuming VCesat=0.2V and β = 50, the minimum base current (IB) required to drive the transistor in the figure to saturation is GATE ECE 2004 Analog Circuits - Bipolar Junction Transistor Question 58 English
A
56 µA
B
140 mA
C
60 µA
D
3 mA
4
GATE ECE 2001
MCQ (Single Correct Answer)
+1
-0.3
The current gain of a BJT is
A
$$g_mr_o$$
B
$$\frac{g_m}{r_o}$$
C
$$g_mr_\mathrm\pi$$
D
$$\frac{g_m}{r_\mathrm\pi}$$
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