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ADC/DAC Quiz

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.

Which of the following represents range of frequency measured by ADC?

a)

None of the answers

b)

Threshold Frequency

c)

Peak Frequency

d)

Bandwidth

2.

Typical conversion speed of ADC is_______________.

a)

Less than 100 microseconds

b)

Less than 500 microseconds

c)

Less than 1 microseconds

d)

Greater than 1000 microseconds

3.

Which of the following method is employed for ADC?

a)

Successive approximation type

b)

Ladder network

c)

None of the answers

d)

PWM type

4.

Dynamic range of ADC is dependent on

a)

Linearity

b)

Resolution

c)

All of the answers

d)

Accuracy

5.

Successive approximation is slow for large bit application

a)

False

b)

True

c)

either True or False

d)

None of the answer

6.

Which of the following type output is provided by ADC?

a)

Both serial and parallel type

b)

None of the answers

c)

Parallel type

d)

Serial type

7.

Small timing errors in ADC additional to noise is known as ________.

a)

Aliasing

b)

None of the answer

c)

jitter

d)

Super noise

8.

Rotary encoder is an ADC.

a)

False

b)

True

c)

Either True or False

d)

None of the answers

9.

Which of the following is an indication by setting time?

a)

All of the answers

b)

Precision in conversion

c)

Accuracy of conversion

d)

Speed of conversion

10.

Dynamic range is expressed in __________________.

a)

volts

b)

Hz

c)

Ampere

d)

Decibel

11.

Filling data between impulses in DAC is known as __________.

a)

None of the answers

b)

Interpolation

c)

Reconstruction

d)

Sampling

12.

Which of the following is a binary weighted DAC?

a)

Switched resistor DAC

b)

R-2R ladder DAC

c)

Sampling DAC

d)

PWM DAC

13.

Thermal noise is absent in DAC.

a)

False

b)

True

c)

either True or False

d)

None of the answers

14.

Which of the following are used in DAC?

a)

Ladder Network

b)

Successive approximation technique

c)

Both Ladder and successive approximation technique

d)

None of the answers

15.

Which of the following represents over sampling DAC?

a)

Switched resistor DAC

b)

Binary weighted DAC

c)

PWM DAC

d)

Delta sigma DAC

16.

ADC conversion involves

a)

Quantization

b)

Simulation

c)

Summation

d)

Subtraction

17.

ADC input is sampled

a)

Nyquist Rate

b)

Newton Rate

c)

Ohm's Rate

d)

Lens Rate

18.

An ADC works by sampling the value of the input at

a)

Discrete Interval

b)

Continuous Interval

c)

Exponential Interval

d)

Determinant Interval

19.

________ analog-to-digital converters (ADCs) use no clock signal, because there is no timing or sequencing required.

a)

Actuator

b)

Dual

c)

Flash

d)

Successive approximation

20.

________ analog-to-digital converters (ADCs) have a fixed value of conversion time that is not dependent on the value of the analog input.

a)

Flash

b)

Dual

c)

Recessive approximation

d)

Successive approximation

21.

The problems of the binary-weighted resistor digital-to-analog converter (DAC) can be overcome by using ___________.

a)

an 8-bit binary-weighted resistor DAC

b)

an R/2R ladder DAC

c)

a staircase DAC

d)

a flash DAC

22.

Inaccurate analog-to-digital conversion may be due to ____________.

a)

constant analog input voltage

b)

linear ramp usage

c)

intermittent counter inputs

d)

faulty sample-and-hold circuitry

23.

A binary-weighted resistor used in a digital-to-analog converter (DAC) is only practical up to a resolution of ________.

a)

10 bits

b)

2 bits

c)

8 bits

d)

4 bits

24.

The flash method of analog-to-digital conversion (ADC) uses comparators that compare reference voltages with the analog input voltage.

A.TrueB.

a)

True

b)

False

c)

None of the above

d)

either True or False

25.

A 4-bit R/2R digital-to-analog (DAC) converter has a reference of 5 volts. What is the analog output for the input code 0101.

A. B.C.D.

a)

0.3125 V

b)

3.125 V

c)

0.78125 V

d)

–3.125 V