WorksheetsELECTRONIC CIRCUITS QUIZ ONLINE TOPIC TIMER
Total questions: 10
Worksheet time: 5mins
What is the popular and useful version of timer?
555
556
554
355
555 Timer can be classified into several of modes, list belows shows the name of modes in timer, EXCEPT:
Monostable
Astable
Bistable
Non-stable
What is the types of timer mode that not stable and known as a free running?
Monostable
Astable
Bistable
Schmitt Trigger
What is the type of timer mode that remain in the low state until the trigger pulse applied to pin trigger?
Schmitt Trigger
Astable
Monostable
Bistable
What is the timer mode for the circuit below?
Bistable
Monostable
Astable
Schmitt Trigger
A monostable circuit produces a single output pulse when triggered. It is called a monostable because it is stable in just one state: 'output low'. The 'output high' state is temporary. The duration of the pulse is called the time period (T) or pulse width(w) . Calculate the T if given R=1.2K Ohm and C= 0.1uF. W (pulse width) = 1.1 RC seconds
1.32 ms
1.32 us
1.42 ms
1.42us
This timer mode has two stable states. It has two inputs pin 2 makes the output high. and pin 4 makes the output low. . Name the timer mode.
Bistable
Astable
Monostable
Schmitt Trigger
Calculate the Duty Cycle, D for astable timer if given TH= 19.96us and T= 24.95us. Formula D=( TH / T) x 100%
70%
80%
90%
95%
What is pin number for Ground and Output at timer 555?
Ground-1
Output-3
Ground-1
Output-7
Ground-2
Output-3
Ground-8
Output-3
Choose is CORRECT Astable mode output waveform.
