250+ TOP MCQs on Piecewise Linear Model of Diode – 1 and Answers

Analog Circuits Multiple Choice Questions on “Piecewise Linear Model of Diode – 1”.

1. After cut-in voltage in piecewise linear model diode act as a ___________
A. Resistor
B. Capacitor
C. Conductor
D. Insulator

Answer: A
Clarification: After cut –in voltage diode act as a resistor in piecewise linear mode. In normal operation diode current is exponentially related to voltage.

2. Reverse biased condition of a diode in piecewise linear model is equivalent to __________
A. Resistor
B. Capacitor
C. Conductor
D. Insulator

Answer: d
Clarification: For a diode in reverse bias mode current through the diode is in micro amperes or nano amperes. Hence we can assume it as zero. In piecewise linear model reverse current is assumed to zero. That is, as an insulator.

3. Voltage drop produced by a diode in piecewise linear mode is __________
A. Constant and equal to knee voltage
B. Varies linearly with voltage after knee voltage
C. Varies exponentially with voltage after knee voltage
D. Constant and equal to twice of knee voltage

Answer: B
Clarification: Voltage drop produced by diode in piecewise linear model is not constant. Since it contains effect of resistor, the diode voltage linearly increases as input voltage increases.

Leave a Reply

Your email address will not be published. Required fields are marked *