1
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
2
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
$$\frac{g_m}{r_\mathrm\pi}$$
3
GATE ECE 2000
MCQ (Single Correct Answer)
+1
-0.3
Introducing a resistor in the emitter of a common amplifier, stabilizes the dc operating point against variations in
A
only the temperature
B
only the β of the transistor
C
both temperature and β
D
none of the above
4
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The emitter coupled pair of BJT’s gives a linear transfer relation between the differential output voltage and the differential input voltage Vid only. When the magnitude of Vid is less than '$$\alpha$$' times the thermal voltage, where '$$\alpha$$' is
A
4
B
3
C
2
D
1
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