GATE ECE 2004 | Bipolar Junction Transistor Question 38 | Analog Circuits

GATE ECE 2004

MCQ (Single Correct Answer)

-0.3

Assuming V_Cesat=0.2V and β = 50, the minimum base current (I_B) required to drive the transistor in the figure to saturation is GATE ECE 2004 Analog Circuits - Bipolar Junction Transistor Question 59 English

GATE ECE 2004 Analog Circuits - Bipolar Junction Transistor Question 59 English

56 µA

140 mA

60 µA

3 mA

GATE ECE 2001

MCQ (Single Correct Answer)

-0.3

The current gain of a BJT is

$$g_mr_o$$

$$\frac{g_m}{r_o}$$

$$g_mr_\mathrm\pi$$

$$\frac{g_m}{r_\mathrm\pi}$$

GATE ECE 2000

MCQ (Single Correct Answer)

-0.3

Introducing a resistor in the emitter of a common amplifier, stabilizes the dc operating point against variations in

only the temperature

only the β of the transistor

both temperature and β

none of the above

GATE ECE 1998

MCQ (Single Correct Answer)

-0.3

In a series regulated power supply circuit, the voltage gain A_v of the ‘pass’ transistor satisfies the condition:

$$A_v\rightarrow\infty$$

$$1\;\ll\;A_v\;\ll\;\infty$$

$$A_v\;\approx\;1$$

$$A_v\;\ll\;1$$

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