Related InterviewSolutions

• Which of the following is true for the saturation region of BJT transistor?(a) The collector current is inversely proportional to the base current(b) The collector current is proportional to the square root of the collector current(c) The natural logarithm of the collector current is directly proportional to the base current(d) None of the mentionedThe question was asked by my school principal while I was bunking the class.Asked question is from BJT Circuits at DC in chapter Bipolar Junction Triodes (BJTs) of Electronic Devices & Circuits
• The SI units of transconductance is(a) Ampere/ volt(b) Volt/ ampere(c) Ohm(d) SiemensThe question was posed to me during an interview for a job.Query is from Small Signal Operations and Model topic in chapter Bipolar Junction Triodes (BJTs) of Electronic Devices & Circuits
• Suppose the hop rate is increased to 2 hops/bit and the receiver uses square law combining the signal over two hops. The hopping bandwidth for this channel is(a) 3.2767 MHz(b) 13.1068 MHz(c) 26.2136 MHz(d) 1.6384 MHzThe question was asked in my homework.The query is from Spread Spectrum topic in division Bipolar Junction Triodes (BJTs) of Electronic Devices & Circuits
• In a fast FH spread spectrum system, the information is transmitted via FSK with non coherent detection. Suppose there are N = 3 hops/bit with hard decision decoding of the signal in each hop. The channel is AWGN with power spectral density 0.5No and an SNR 20 ~13 dB (total SNR over the three hops). The probability of error for this system is(a) 0.013(b) 0.0013(c) 0.049(d) 0.0049This question was posed to me during an online interview.The above asked question is from Spread Spectrum in portion Bipolar Junction Triodes (BJTs) of Electronic Devices & Circuits
• The maximum possible negative output signal swing as determined by the need to keep the transistor in the active region.(a) 0.5 V(b) 1 V(c) 5 V(d) 10 VI got this question in my homework.The doubt is from BJT in Amplifier Design topic in division Bipolar Junction Triodes (BJTs) of Electronic Devices & Circuits
• Find Ai.(a) 182 A/A(b) 364 A/A(c) 546 A/A(d) 728 A/AThis question was posed to me in an international level competition.Asked question is from Basic BJT Amplifier Configuration in section Bipolar Junction Triodes (BJTs) of Electronic Devices & Circuits
• The maximum possible positive output signal swing as determined by the need to keep the transistor in the active region.(a) -1.7 V(b) -2.7 V(c) -3.7 V(d) -4.7 VI had been asked this question during a job interview.The question is from BJT in Amplifier Design in section Bipolar Junction Triodes (BJTs) of Electronic Devices & Circuits
• Find Gvo.(a) 53.3 V/V(b) 63.3 V/V(c) 73.3 V/V(d) 83.3 V/VI have been asked this question at a job interview.My query is from Basic BJT Amplifier Configuration in section Bipolar Junction Triodes (BJTs) of Electronic Devices & Circuits
• Find Av.(a) 9.09 V/V(b) 10 V/V(c) 90.9 V/V(d) 100 V/VI had been asked this question in examination.Query is from Basic BJT Amplifier Configuration in chapter Bipolar Junction Triodes (BJTs) of Electronic Devices & Circuits
• Find R (in 1) for R (sig) = 5 kΩ.(a) 2.4 kΩ(b) 4.8 kΩ(c) 17.3 kΩ(d) 34.6 kΩThis question was posed to me at a job interview.This question is from Biasing in BJT Amplifier Circuits in portion Bipolar Junction Triodes (BJTs) of Electronic Devices & Circuits