Digital to Analog Converters MCQ’s

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This set of Mechatronics Multiple Choice Questions & Answers (MCQs) focuses on “Digital to Analog Converters”.

1. Which conversion takes place when music is played from a memory card?
a) AAC
b) ADC
c) DDC
d) DAC

2. What is the output of a music player?
a) Digital
b) Semi-digital
c) Analog
d) Semi-Analog

3. What is the form in which audio files are stored?
a) Digital
b) Semi-digital
c) Analog
d) Semi-Analog

4. What does PWM stand for?
a) Pulse Width modulation
b) Pulsating Width modulation
c) Pulse Width modulator
d) Pulsating Width modulator

5. What is the duty cycle of a signal if the pulse width is 0.008 seconds and frequency is 50 hertz?
a) 60%
b) 50%
c) 40%
d) 20%

6. Which of the integrated circuit mentioned below is the name of a Digital to Analog converter?
a) BC541
b) MCP4725
c) TIP122
d) TIP135

7. What is the duty cycle of a signal if the pulse width is 0.4 seconds and the time period is 0.8 second?
a) 60%
b) 50%
c) 40%
d) 20%

8. What is the duty cycle of a signal if the ON time of the signal is 0.5 seconds and off time of the signal is 0.5 seconds?
a) 60%
b) 50%
c) 40%
d) 20%

9. What is the duty cycle of a signal if the pulse width is 0.004 seconds and frequency is 50 hertz?
a) 60%
b) 50%
c) 40%
d) 20%

10. What is the duty cycle of a signal if the ON time of the signal is 0.7 seconds and off time of the signal is 0.3 seconds?
a) 60%
b) 70%
c) 40%
d) 20%

11. The highest voltage value of an analog signal is replaced by “logic 1” in digital signal.
a) True
b) False

12. What is the duty cycle of a signal if the pulse width is 0.3 seconds and the time period is 0.6 second?
a) 60%
b) 50%
c) 40%
d) 20%

13. Which is an example of Digital to Analog converter module?
a) PCF8591
b) TMS320F2809PZA
c) RD-KL25-AGMP01
d) DM388AAARD21

14. We cannot store analog data directly.
a) True
b) False

15. Light can be considered as a form of digital signal.
a) True
b) False

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