1
GATE ECE 2010
MCQ (Single Correct Answer)
+1
-0.3
In the silicon BJT circuit shown below, assume that the emitter area of transistor Q1 is half that of transistor Q2.The value of current I0 is approximately GATE ECE 2010 Analog Circuits - Bipolar Junction Transistor Question 56 English
A
0.5 mA
B
2 mA
C
9.3 mA
D
15 mA
2
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 = $$\infty$$
3
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
4
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 59 English
A
56 µA
B
140 mA
C
60 µA
D
3 mA
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