Analog Electronics - ECE Questions and Answers

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In a commercially available good power supply the voltage regulation is about

10%

20%

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In the circuit of figure the diode

will conduct as the whole cycle

will conduct in the positive half cycle

will not conduct

will conduct from 30° to 150° in the positive half cycle

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The most commonly used bias in BJT amplifier circuits is

voltage divider bias

emitter bias

collector bias

collector feedback bias

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In the circuit of figure, v₁ = v₂ = 10 V. Then

I₁ = I₂

I₁ > I₂

I₂ > I₁

I₁ = 0

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The inverting op-amp shown in the figure has an open loop gain to 100. The closed loop given is

-8

-9

-10

-11

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In a voltage regulated power supply the zener operates in the breakdown region when (V_in is input voltage and V_z is zener breakdown voltage)

V_in < V_z

V_in > V_z

V_in = V_z

both (a) or (b)

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The parameter h₁₁ for CB circuit is higher than that for CE circuit.

True

False

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Figure shows a self bias circuit for FET amplifier, I_D = 4 mA. Then I_S =

4 mA

2 mA

0.4 mA

0.2 mA

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In the CE equivalent circuit of figure, the voltage gain is

200

1000