Related InterviewSolutions

• An electrical signal can be represented in either Thevenin form or Norton From. However, Thevenin representation is preferred when(a) The load resistance is very large as compared to the source resistance(b) The load resistance is very low compared to the source resistance(c) There is no preferred case.(d) Both of the cases mentioned are the preferred caseI got this question in final exam.I'd like to ask this question from Signals in portion Signals and Amplifiers of Electronic Devices & Circuits
• Consider an N-bits ADC (Analog to Digital Converter) whose analog input varies from 0 to Vmax, then which of the following is not true?(a) The least significant bit correspond to a change of Vmax/2^N -1 in the analog signal(b) The resolution of the ADC is Vmax/2^N -1(c) The maximum error in the conversion (or quantization error) is Vmax/2(2^N -1)(d) None of the mentionedThe question was posed to me by my school principal while I was bunking the class.Enquiry is from Signals topic in section Signals and Amplifiers of Electronic Devices & Circuits
• Which of the following is not a classification of amplifiers on the basis of their frequency response?(a) Capacitively coupled amplifier(b) Direct coupled amplifier(c) Bandpass amplifier(d) None of the mentionedThe question was asked during a job interview.Question is taken from Frequency Response of Amplifier topic in division Signals and Amplifiers of Electronic Devices & Circuits
• Which is the Most Significant Bit and Least Significant Bit in this case?(a) MSB: bN, LSB: bN(b) MSB: bN, LSB: b1(c) MSB: b1, LSB: bN(d) MSB: b1, LSB: b1The question was asked during an interview.The question is from Signals in portion Signals and Amplifiers of Electronic Devices & Circuits
• You are given two amplifiers, A and B, to connect in cascade between a 10-mV, 100-kΩ source (S) and a 100-Ω load (L). The amplifiers have voltage gain, input resistance, and output resistance as follows: for A, 100 V/V, 10 kΩ, 10 kΩ, respectively; for B, 1 V/V, 100 kΩ, 100 Ω, respectively. Your problem is to decide how the amplifiers should be connected so that the voltage gain is maximum.(a) SABL(b) SBAL(c) Both have the same voltage gain(d) None as neither combination is able to amplify the input signalI got this question in exam.My question comes from Circuit Models for Amplifier in division Signals and Amplifiers of Electronic Devices & Circuits
• Which of the following isn’t true?(a) Both transformer and amplifier can provide voltage gain(b) Both transformer and amplifier can provide current gain(c) Both transformer and amplifier can provide power gain(d) None of the mentionedThe question was asked during an interview.My doubt stems from Amplifiers topic in portion Signals and Amplifiers of Electronic Devices & Circuits
• In a two element series circuit, the applied voltage and the resulting current are v(t) = 60 + 66 sin (1000t) V, i(t) = 2.3sin (1000t + 68.3) 3 A. The nature of the elements would be(a) RC(b) LC(c) RL(d) RRI had been asked this question in homework.This intriguing question comes from Sinusoidal Steady State Analysis topic in portion Signals and Amplifiers of Electronic Devices & Circuits
• Statement 1: Voltage gain of -5 means that the output voltage has been attenuated.Statement 2: Voltage gain of -5db means that the output voltage has been attenuated.(a) Statement 1 and Statement 2 are true(b) Statement 1 and Statement 2 are false(c) Only Statement 1 is true(d) Only Statement 2 is trueThe question was asked during an interview.The origin of the question is Amplifiers topic in portion Signals and Amplifiers of Electronic Devices & Circuits
• What is the binary representation of 57?(a) 0011 1101(b) 0101 1001(c) 0111 1001(d) 0011 1001The question was posed to me in a national level competition.This interesting question is from Signals topic in section Signals and Amplifiers of Electronic Devices & Circuits
• For vref = 10V, n = 6, and R= 5000 ohm, which of the following is true?(a) The maximum value of the output current is 1.9375 mA(b) The change in the output current if the LSB is changed from 0 to 1 is 0.03125 mA(c) The change in the output current is the MSB is change from 0 to 1 is 0.5 mA(d) None of the mentionedThe question was asked during an interview.This intriguing question comes from Signals in portion Signals and Amplifiers of Electronic Devices & Circuits