Flip-Flops and Timers - General Questions Online Exam Quiz
Flip-Flops and Timers - General Questions GK Quiz. Question and Answers related to Flip-Flops and Timers - General Questions. MCQ (Multiple Choice Questions with answers about Flip-Flops and Timers - General Questions
Which of the following is correct for a gated D-type flip-flop?
A : The Q output is either SET or RESET as soon as the D input goes HIGH or LOW.
B : The output complement follows the input when enabled.
C : Only one of the inputs can be HIGH at a time.
D : The output toggles if one of the inputs is held HIGH.
When both inputs of a J-K flip-flop cycle, the output will:
A : be invalid
B : not change
C : change
D : toggle
Latches constructed with NOR and NAND gates tend to remain in the latched condition due to which configuration feature?
A : asynchronous operation
B : low input voltages
C : gate impedance
D : cross coupling
The 555 timer can be used in which of the following configurations?
A : astable, monostable
B : monostable, bistable
C : astable, toggled
D : bistable, tristable
A basic S-R flip-flop can be constructed by cross-coupling which basic logic gates?
A : AND or OR gates
B : XOR or XNOR gates
C : NOR or NAND gates
D : AND or NOR gates
One example of the use of an S-R flip-flop is as a(n):
A : transition pulse generator
B : astable oscillator
C : racer
D : switch debouncer
If both inputs of an S-R NAND latch are LOW, what will happen to the output?
A : The output would become unpredictable.
B : The output will toggle.
C : The output will reset.
D : No change will occur in the output.
The equation for the output frequency of a 555 timer operating in the astable mode is: . What value of C 1 will be required if R 1 = 1 k , R 2 = 1 k , and f = 1 kHz?
A : 0.33 F
B : 0.48 F
C : 480 F
D : 33 nF
An astable multivibrator is a circuit that:
A : has two stable states
B : is free-running
C : produces a continuous output signal
D : is free-running and produces a continuous output signal
What is another name for a one-shot?
A : monostable
B : bistable
C : astable
D : tristable
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