Related InterviewSolutions

• For the circuit and the input signal shown which of the following is true for the output voltage?(a) The output waveform is a square wave with lowest peak clamped to 0V(b) The output wave is a square wave with lowest peak clamped to -6V(c) The output waveform is a square wave with highest peak clamped to 4V(d) The output waveform is a straight line with the value of output voltage equal to 10VThis question was addressed to me during an interview.The question is from Limiting and Clamping Circuits and Some Special Types of diodes in division Diodes of Electronic Devices & Circuits
• In many applications, a conducting diode is modeled as having a constant voltage drop, usually approximately(a) 1 V(b) 0.1 V(c) 0.7 V(d) 7VI got this question in homework.This interesting question is from Modelling the Diode Forward Characteristics topic in section Diodes of Electronic Devices & Circuits
• Which of the following is not true for a Schottky-Barrier Diode (SBD)?(a) It is formed by bringing metal into contact with a moderately doped n-type semiconductor material.(b) In the SBD, current is conducted by mainly by minority carriers.(c) The forward voltage drop of a conducting SBD is lower than that of a pn-junction diode.(d) SBD are used in the design of a special form of bipolar-transistor logic circuitsThe question was asked during an interview.My question is taken from Limiting and Clamping Circuits and Some Special Types of diodes in chapter Diodes of Electronic Devices & Circuits
• The value of I and V for the circuit shown below are(a) 2A and 5V respectively(b) -2A and 5V respectively(c) -2A and -5V respectively(d) 2A and 0V respectivelyThe question was asked in an interview.This interesting question is from The Ideal Diode topic in chapter Diodes of Electronic Devices & Circuits
• Which of the following is true about the temperature coefficient or TC of the Zener diode?(a) For Zener voltage less than 5V, TCis negative(b) For Zener voltage around 5V, TC can be made zero(c) For higher values of Zener voltage, TC is positive(d) All of the mentionedThe question was asked during an interview.Enquiry is from Zener Diode topic in portion Diodes of Electronic Devices & Circuits
• The other name for bias point is(a) Quiescent point(b) Node point(c) Terminal point(d) Static pointI had been asked this question in an internship interview.The above asked question is from Modelling the Diode Forward Characteristics topic in chapter Diodes of Electronic Devices & Circuits
• The figure below shows a circuit for an AC voltmeter. It utilizes a moving-coil meter that gives a full-scale reading when the average current flowing through it is 1 mA. The moving-coil meter has a 50-Ω resistance. The value of R that results in the meter indicating a full-scale reading when the input sine-wave voltage VI is 20 V peak-to-peak is(a) 3.183 kΩ(b) 3.133 kΩ(c) 3.183 Ω(d) 56.183 ΩThe question was asked in an online interview.This key question is from The Ideal Diode in portion Diodes of Electronic Devices & Circuits
• Zener diodes can be effectively used in voltage regulator. However, they are these days being replaced by more efficient(a) Operational Amplifier(b) MOSFET(c) Integrated Circuits(d) None of the mentionedThis question was posed to me in final exam.I want to ask this question from Zener Diode topic in division Diodes of Electronic Devices & Circuits
• For a half-wave rectifier having diode voltage VD and supply input of VI, the diode conducts for π – 2Θ, where Θ is given by(a) tan^ -1 VD/VI(b) tan^-1VD/VI – VI(c) sin^-1VD/VI(d) sin^-1VD/VI – VIThe question was asked in a national level competition.My enquiry is from Rectifiers topic in section Diodes of Electronic Devices & Circuits
• A designer requires a shunt regulator of approximately 20 V. Two kinds of Zener diodes are available: 6.8-V devices with rz of 10 Ω and 5.1-V devices with rz of 30 Ω. For the two major choices possible, find the load regulation. In this calculation neglect the effect of the regulator resistance R.(a) -30mV/mA and 120mV/mA respectively(b) 30mV/mA and 60mV/mA respectively(c) -60mV/mA and +60mV/mA respectively(d) -30mV/mA and -120mV/mA respectivelyThis question was posed to me in my homework.Origin of the question is Zener Diode in portion Diodes of Electronic Devices & Circuits