Test: Analog Electronics - 3 - Electrical Engineering (EE) MCQ

The gain of an FET amplifier can be changed by changing

The open loop gain of an actual op-amp is about 100.

In the circuit figure LED will be on when v₁ is

A differential amplifier consists of two CB amplifiers.

Figure shows a portion of linear v - i characteristics of diode. If applied voltage is + 6 V, the current will be

A power transistor dissipates 5 W. If ambient temperature is 30º and case to air thermal resistance is 10º C/W, the case temperature is

An R-C coupled amplifier has mid-frequency gain of 200 and a frequency response from 100 Hz to 20 kHz. A negative feedback network with β = 0.2 is incorporated into the amplifier circuit, the Bandwidth will be

In figure the zener current

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

In the circuit of figure the diode

The most commonly used bias in BJT amplifier circuits is

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

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

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)

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

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

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

In a CE amplifier

The voltage gain of an amplifier without and with feedback are 100 and 20. The negative feedback is

In the circuit shown in figure, R_C = 10k, R_E = 150Ω, β = 100, I = 1 mA. The value of , will be

Calculate the conductivity of pure silicon at room temperature when the concentration of carriers is 1.6 x 10¹⁰ per cm³. Take μ_e = 1500 cm²/V-sec, μ_h = 500 cm²/V-sec at room temperature,

A potential of 7 V is applied to a silicon diode. A resistance of 1 kΩ is also connected in series. If the diode is forward biased, the current in the circuit is