Clipper Circuits Quiz

What is the mathematical expression for the output voltage (V₀) of a parallel clipper circuit when the input voltage (Vᵢ) is less than zero?

• V₀ = 0

• V₀ = Vᵢ × (R_L / (R₁ + R_L))

• V₀ = Vᵢ × (R₁ / (R₁ + R_L))

• V₀ = 0.7 V

What is the main function of a two way parallel clipper circuit?

• To amplify both positive and negative half cycles of the input

• To clip both positive and negative half cycles of the input

• To convert AC to DC

• To filter out noise from the input signal

What is the output voltage (Vo) during the positive half cycle in a positive clamper circuit?

• Vo = Vi + Vm

• Vo = Vi - Vm

• Vo = Vi × Vm

• Vo = Vi / Vm

What happens to the diode D during the negative half cycle when Vᵢ becomes less than V in a clamper circuit with a battery?

• The diode becomes forward biased

• The diode becomes reverse biased

• The diode is removed from the circuit

• The diode acts as an open circuit

How is amplification in a transistor achieved?

• By passing input current signal from a region of low resistance to a region of high resistance

• By increasing the voltage supply

• By reducing the number of terminals

• By connecting multiple transistors in series

What is the relationship between emitter current (IE) and collector current (IC) in a transistor when the base current is very small?

• IC is much greater than IE

• IC is much less than IE

• IC is nearly equal to IE

• IC is double IE

What is the formula for collector current (IC) in a common emitter configuration?

• IC = αdc IE + ICBO

• IC = βdc IB + (1 + βdc) ICBO

• IC = IE + IB

• IC = βdc IE + ICBO

Given βdc = αdc / (1 - αdc), what does βdc represent in a BJT configuration?

• Current gain in common base configuration

• Current gain in common emitter configuration

• Voltage gain in common collector configuration

• Resistance in common base configuration

What is required to operate a transistor in the desired region?

• Applying external DC voltages of correct polarity and magnitude to the two junctions

• Increasing the temperature of the transistor

• Using only AC voltages

• Connecting the transistor directly to ground

What is the expression for base current (IB) in a fixed bias circuit?

• IB = (VCC + VBE) / RB

• IB = (VCC - VBE) / RB

• IB = (VCC - VBE) / RC

• IB = (VCC + VBE) / RC