Explore topic-wise MCQs in Boolean Algebra and Logic Simplification .

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Boolean Algebra and Logic Simplification knowledge and support exam preparation. Choose a topic below to get started.

1.

An astable multivibrator requires

A. no input signal
B. dual J-K flip-flops
C. a pair of matched transistors
D. balanced time constants
Answer» B. dual J-K flip-flops
Discussion
2.

If V cc of a 555 timer circuit is set to +10 V what is the level of output voltage from the circuit?

A. V OH = 10 V, V OL = 0 V
B. V OH = 10 V, V OL = 0.1 V
C. V OH = 8.5 V, V OL = 0 V
D. V OH = 8.5 V, V OL = 0.1 V
Answer» E.
Discussion
3.

A 0.3- F capacitor has an initial charge of 2.7 V. If it is discharged through a 10-k resistor for 6.5 ms, how much voltage will be left across the capacitor?

A. 0.0 V
B. 0.309 V
C. 2.7 V
D. 2.295 V
Answer» C. 2.7 V
Discussion
4.

What is the pulse width of the output of a 74123 if an external 4.7-k resistor and a 0.022- F capacitor are used?

A. 290 ms
B. 29 ms
C. 33.3 s
D. 290 s
Answer» D. 290 s
Discussion
5.

A 22-k resistor and a 0.02- F capacitor are connected in series to a 5-V source. How long will it take the capacitor to charge to 3.4 V?

A. 0.44 ms
B. 0.501 ms
C. 0.66 ms
D. 0.70 ms
Answer» C. 0.66 ms
Discussion