Electronic Devices and Circuit Theory-Linear-Digital ICs Questions and Answers

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Q1
What is the level of the output voltage of a ladder-network conversion?
  • A The analog output voltage proportional to the digital input voltage
  • B The digital output voltage proportional to the linear input voltage
  • C A fixed digital value Vref
  • D A fixed analog value Vref
Answer: Option A
Q2
Which of the following is not a linear/digital IC?
  • A Phase-locked loop
  • B Voltage-controlled oscillator
  • C Passive filter
  • D Comparator
Answer: Option C
Q3
Which of the following is not a linear/digital IC?
  • A Phase-locked loop
  • B Voltage-controlled oscillator
  • C Passive filter
  • D Comparator
Answer: Option C
Q4
Which of the following is not a linear/digital IC?
  • A Phase-locked loop
  • B Voltage-controlled oscillator
  • C Passive filter
  • D Comparator
Answer: Option C
Q5
A 339 IC is an example of a fourteen-pin DIP that can be made to function as a ________.
  • A comparator
  • B 555 timer
  • C D to A converter
  • D ladder network
Answer: Option A
Q6
What is the minimum number of conversions per second of a clock rate of 1 MHz operating a 10-stage counter in an ADC?
  • A 1000
  • B 976
  • C 769
  • D 697
Answer: Option B
Q7
Which of the following is (are) the results of improvements built into a comparator IC?
  • A Faster switching between the two output levels
  • B Noise immunity
  • C Outputs capable of directly driving a variety of loads
  • D All of the above
Answer: Option D
Q8
What is the first phase of the dual-slope method of conversion?
  • A Connecting the analog voltage to the integrator for a fixed time
  • B Setting the counter to zero
  • C Connecting the integrator to a reference voltage
  • D All of the above
Answer: Option A
Q9
What is the maximum conversion time of a clock rate of 1 MHz operating a 10-stage counter in an ADC?
  • A 1.024 s
  • B 102.3 ms
  • C 10.24 ms
  • D 1.024 ms
Answer: Option D
Q10
On which of the following does the conversion depend in ladder-network conversion?
  • A Comparator
  • B Control logic
  • C Digital counter
  • D Clock
Answer: Option A
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