# A to D Converter MCQ Questions & Answers

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

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

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

C. Both integrating and direct type ADC
D. None of the mentioned