A to D Converter MCQs : This section focuses on the "A to D Converter". These Multiple Choice Questions (MCQs) should be practiced to improve the A to D Converter skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
A 12 bit dual ramp generation has a maximum output voltage of +12v. Compute the equivalent digital number for the analog signal of +6v.
A. 1000000000
B. 10000000000
C. 1000000000000
D. 100000000000
Question 2
At what condition error occurs in the servo tracking A/D Converter?
A. Slow change input
B. Rapid change in input
C. No change in input
D. All of the mentioned
Question 3
Calculate the conversion time of a 12-bit counter type ADC with 1MHz clock frequent to convert a full scale input?
A. 4.095 µs
B. 4.095ms
C. 4.095s
D. None of the mentioned
Question 4
Drawback of counter type A/D converter
A. Counter clears automatically
B. More complex
C. High conversion time
D. Low speed
Question 5
Find out the integrating type analog to digital converter?
A. Flash type converter
B. Tracking converter
C. Counter type converter
D. Dual slope ADC
Question 6
How many clock pulses do a successive approximation converter requires for obtaining a digital output.
A. Twelve
B. Six
C. Eight
D. None of the mentioned
Question 7
How many control lines are present in analog to digital converter in addition to reference voltage?
A. Three
B. Two
C. One
D. None of the mentioned
Question 8
How to overcome the drawback of the charge balancing ADC?
A. By using precision integrator
B. By using Voltage to frequency converter
C. By using voltage comparator
D. By using dual slope converter
Question 9
In a servo tracking A/D converter, the input voltage is greater than the DAC output signal at this condition
A. The counter count up
B. The counter count down
C. The counter back and forth
D. None of the mentioned
Question 10
In integrating type ADCs, the
A. Input voltage is proportional to input averaged over the integration period
B. Output voltage is proportional to input averaged over the integration period
C. Output voltage is proportional to sum of input voltage
D. Input voltage is proportional to sum of input voltage
Question 11
In which application dual slop converter are used.
A. Thermocouple
B. Digital panel meter
C. Weighting scale
D. All of the mentioned
Question 12
The flash type A/D converters are called as
A. Parallel non-inverting A/D converter
B. Parallel counter A/D converter
C. Parallel inverting A/D converter
D. Parallel comparator A/D converter
Question 13
The Integrating type converters are used in
A. Digital meter
B. Panel meter
C. Monitoring system
D. All of the mentioned
Question 14
The number of comparator required for flash type A/D converter
A. Triples for each added bit
B. Reduce by half for each added bit
C. Double for each added bit
D. Doubles exponentially for each added bit
Question 15
What is the advantage of using flash type A/D converter?
A. High speed conversion
B. Low speed conversion
C. Nominal speed conversion
D. None of the mentioned
Question 16
Which among the following has long conversion time?
A. Servo converter
B. Dual ramp converter
C. Flash converter
D. None of the mentioned
Question 17
Which type of ADC follow the conversion technique of changing the analog input signal to a linear function of frequency?
A. Direct type ADC
B. Integrating type ADC
C. Both integrating and direct type ADC
D. None of the mentioned
Question 18
Which type of ADC is chosen for noisy environment?
A. Successive approximation ADC
B. Dual slope
C. Charge balancing ADC
D. All of the mentioned