Electronics and Communication Engineering (ECE) Exam  >  Electronics and Communication Engineering (ECE) Tests  >  Topicwise Question Bank for Electronics Engineering  >  Test: Data Converters - 1 - Electronics and Communication Engineering (ECE) MCQ

Test: Data Converters - 1 - Electronics and Communication Engineering (ECE) MCQ


Test Description

10 Questions MCQ Test Topicwise Question Bank for Electronics Engineering - Test: Data Converters - 1

Test: Data Converters - 1 for Electronics and Communication Engineering (ECE) 2024 is part of Topicwise Question Bank for Electronics Engineering preparation. The Test: Data Converters - 1 questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The Test: Data Converters - 1 MCQs are made for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Data Converters - 1 below.
Solutions of Test: Data Converters - 1 questions in English are available as part of our Topicwise Question Bank for Electronics Engineering for Electronics and Communication Engineering (ECE) & Test: Data Converters - 1 solutions in Hindi for Topicwise Question Bank for Electronics Engineering course. Download more important topics, notes, lectures and mock test series for Electronics and Communication Engineering (ECE) Exam by signing up for free. Attempt Test: Data Converters - 1 | 10 questions in 30 minutes | Mock test for Electronics and Communication Engineering (ECE) preparation | Free important questions MCQ to study Topicwise Question Bank for Electronics Engineering for Electronics and Communication Engineering (ECE) Exam | Download free PDF with solutions
Test: Data Converters - 1 - Question 1

The full-scale output of a digital to analog converter is 20 mA. If the resolution is 80µA, then the minimum number of bits required and percentage resolution are:

Detailed Solution for Test: Data Converters - 1 - Question 1

Concept:

The resolution for n bit DAC is given by:

The % resolution for n bit DAC is given by:

Calculation:

n = 8

% R = 0.39

Test: Data Converters - 1 - Question 2

An eight-bit D/A converter has a step size of 20 mV. The full-scale output voltage, in this case, would be -

Detailed Solution for Test: Data Converters - 1 - Question 2

The full scale output voltage of the given step size δ is:                             

Vfs = (2n−1) x δ where n is the number of bits

Now ,for question n = 8 and δ = 20 mV

Vfs = (28 − 1)×20×10−3

Vfs = 5.1 V

1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Data Converters - 1 - Question 3

What is the resolution of a 0 - 5 V 8-bit DAC?

Detailed Solution for Test: Data Converters - 1 - Question 3

 

Concept:

The resolution of either a digital-to-analog converter (DAC) or an analog-to-digital converter (ADC) is the measure of how finely its output may change between discrete, binary steps.

For an n-bit DAC, the resolution (R) is measured by:

Vout = Output Voltage

n = number of bits

Calculation:

With Vout = 5 V, and n = 8 bits, the resolution will be:

Resolution = 0.0196

Test: Data Converters - 1 - Question 4

How many comparators would a 12-bit flash ADC require?

Detailed Solution for Test: Data Converters - 1 - Question 4

No of comparators required for n bit flash type ADC is (2- 1)

Given that, n = 12

No of comparators = 4095

Test: Data Converters - 1 - Question 5

The resolution of an 8 bit DAC will be:

Detailed Solution for Test: Data Converters - 1 - Question 5

Resolution: It is defined as the smallest change in the analog output voltage corresponding to a change of one bit in the digital output.

The percentage resolution (%R) of an n-bit DAC is:

The resolution of an n-bit DAC with a range of output voltage from 0 to V is given by:

Calculation:

Number of bits (n) = 8

Resolution = 

Test: Data Converters - 1 - Question 6

If the resolution of a digital-to-analog converter is approximately 0.4% of its full-scale range, then it is a/an _______.

Detailed Solution for Test: Data Converters - 1 - Question 6

Concept of Resolution: 

It is defined as the smallest change in the analog output voltage corresponding to a change of one bit in the digital output.

The percentage resolution (%R) of an n-bit DAC is:

Calculation:

As we know the formula resolution,

250 = 2N -1

2N = 251 ≈ 255 

i.e., 28 = 255

N = 8

Hence the minimum value of N satisfying the condition.

Test: Data Converters - 1 - Question 7

The resolution of 4 Bit counting ADC is 05 V For an analog input 5.8 volt the output of ADC will be_____

Detailed Solution for Test: Data Converters - 1 - Question 7

Concept:

  • Analog-to-Digital Converters (ADCs) transform an analog voltage to a binary number (a series of 1’s and 0’s).
  • Then eventually to a digital number (base 10) for reading on a meter, monitor, or chart.
  • The ADC resolution depends upon the number of bits used to represent the digit number. 
  • As the number of bits increases the resolution of an Analog to Digital Converter improves and the quantization error decreases.

Resolution for n – bit A/D converter  will be:

Where 

R = Resolution

VFS is reference voltage 'or' Full-scale voltage

n = number of bits

2ibi gives output voltage value.

Calculation:

Given:

VFS = 5.8 V

n = 4

R = 05 V

2ibi = 12.93 V ≈ 12 V

In bits, the output voltage will be 1100

Hence option (A) is the correct answer.

Test: Data Converters - 1 - Question 8

A D/A converter has 5V full-scale input voltage and an accuracy of ± 0.2%. The maximum error for any output voltage will be

Detailed Solution for Test: Data Converters - 1 - Question 8

Concept:

Maximum error (Er) of D/A is given as,

E= (VFS x Accuracy)

Where,

VFS: full-scale input voltage

Calculation:

Given: VfS = 5V , Accuracy= 0.2%

Er = 10 mV

Test: Data Converters - 1 - Question 9

Match List I with List II

Choose the correct answer from the options given below:

Detailed Solution for Test: Data Converters - 1 - Question 9

Counter type ADC:

  • Counter-type ADC is very simple to understand and also easy to operate.
  • Counter-type ADC design is less complex, so the cost is also less.
  • ·Speed is less, since each time the counter has to begin from ZERO.
  • There may be conflicts if the next input is sampled before the completion of one process.
  • In a Counter type ADC, the conversion time varies.
Test: Data Converters - 1 - Question 10

The present resolution of an 8-bit D/A converter is

Detailed Solution for Test: Data Converters - 1 - Question 10

Resolution: It is defined as the smallest change in the analog output voltage corresponding to a change of one bit in the digital output.

The percentage resolution (%R) of an n-bit DAC is:

The resolution of an n-bit DAC with a range of output voltage from 0 to V is given by:

Calculation:

Full scale output voltage (V) = 10 V

Number of bits (n) = 8

Resolution = 

%R = 1 / 255 × 100 = 0.392 %

195 tests
Information about Test: Data Converters - 1 Page
In this test you can find the Exam questions for Test: Data Converters - 1 solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Data Converters - 1, EduRev gives you an ample number of Online tests for practice

Top Courses for Electronics and Communication Engineering (ECE)

Download as PDF

Top Courses for Electronics and Communication Engineering (ECE)