Chapter 6 CLOCKS AND TIMERS MCQs

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1. . The 555 Timer IC got its name from the three _______ resistors that are used in its voltage divider network:





2. . The 555 Timer IC is a _______ pin mini Dual-Inline Package:





3. . 555 Timer mainly useful for generating ___________ wave forms:





4. . The pictorial representation showing the internal details of a 555 timer is known as:





5. . The functional diagram of a 555 Timer IC consists of ___ comparators:





6. . 555 Timer IC is useful for generating accurate time delays and oscillations:





7. . Pin 8 of 555 IC consists of:





8. . Pin 1 of 555 time IC has:





9. . A 555 timer in monostable application mode can be used for:





10. . This 555 Timer IC can be operated with a DC supply of +5V to +18V:





11. . In 555 timer, reset is present at pin:





12. . Astable multivibrator is:





13. . Determine the time period of a monostable 555 multivibrator:





14. . A multivibrator is a circuit which generates:





15. . Most popular IC used in timing circuits:





16. . A monostable multivibrator has R = 120kΩ and the time delay T = 1000ms, calculate the value of C:





17. . Free running frequency of Astable multivibrator:





18. . What is the duty cycle of the output of an astable multivibrator?





19. . Which of the following multivibrator is called the flip-flop:





20. . A monostable multivibrator is also referred as:





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