Digital Logic Design – Digital Electronics – D/A and A/D Converters MCQs

In this section of Digital Logic Design – Digital Electronics – D/A (D to A – Digital to Analog) and A/D (A to D – Analog to Digital) Converters MCQs (Multiple Choice Questions and Answers),We have tried to cover the below lists of topics.All these MCQs will help you prepare for the various Competitive Exams and University Level Exams.

1. Digital to Analog Conversion MCQs.
2. Resistor Divider D/A Converter MCQs.
3. Binary Ladder Network D/A Converter MCQs.
4. Analog to Digital Conversion MCQs.
5. Voltage to time to Digital converter MCQs.
6. Dual Slope Integrator A/D Converter MCQs.
7. Counter Type or Pulse Width Type A/D Converter MCQs.
8. Voltage to Frequency A/D converter MCQs.
9. Discrete Voltage Comparison A/D converter MCQs.

PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE

1. The equivalent weight of LSB in a four-bit variable resistive divider D/A converter is

• ¼
• 1/16
• 1/15
• 8/15

C. 1/15

2. For a 5 bit resistive divider network the weight assigned to MSB is

• 1/31
• 1/32
• 8/31
• 16/31

D. 16/31

3. For a four input resistive divider (0=0V ,1=+10V),the analog output voltage for a digital input of 1101 is

• 7 (1/3) V
• 13V
• 8(2/3)V
• 11.01 V

C. 8(2/3)V

4. The number of resistors required for a five bit resistor divider ,D/A converter are

• 10
• 5
• 8
• 31

B. 5

5. Binary ladder network is better than resistive divider for D/A conversion ,because

• It requires lesser number of resistors
• it requires resistor having two values only
• It is cheaper
• It gives better accuracy

B. it requires resistor having two values only

6. A 4 bit resistor divider D/A converter uses 80KOHM resistor for MSB . the resistor value used for LSB

• 160 KOhm
• 40 Kohm
• 20 Kohm
• 10 Kohm

D. 10 Kohm

7. The error in the D/A converter output may be due to

• Errors in the values of resistors used
• Monotonocity
• Small resolution
• Its higher D/A speed

A. Errors in the values of resistors used

8. In a binary ladder (R-2R),D/A converter ,the input resistance for each input is

• R
• 2R
• 3R
• 4R

C. 3R

9. In a five bit binary ladder D/A converter ,if the value of R is 1Kohm,2R is 2Kohm and voltage levels are 0=0V and 1=+6V, then the current ,which each digital input voltage source can supply is

• 6mA
• 4mA
• 2mA
• 1mA

C. 2mA

10. The percentage resolution of ten-bit A/D converter is nearly

• 1%
• 0.01%
• 0.1%
• 10%

C. 0.1%

11. The percentage Quantization error of a ten-bit A/D converter is

• 0.1%
• 1%
• 0.01%
• 10%

A. 0.1%

12. The fastest A/D converter is

• Single slope ramp comparator A/D converter
• Dual slope integrator A/D converter
• Successive approximation A/D converter
• Counter type A/D converter

C. Successive approximation A/D converter

13. A/D converter which does not use D/A converter is

• Continuous null balance A/D converter
• Dual slope integrator A/D converter
• Staircase ramp A/D converter
• Successive approximation A/D converter

B. Dual slope integrator A/D converter

14. The main disadvantage of a dual slope integrator A/D converter is its

• Slow conversion time
• High cost
• Low sensitivity
• Temperature immunity

A. Slow conversion time