Digital Circuits - Online Test

Q1. The output expression for the Karnaugh map shown below is

Answer : Option B
Explaination / Solution:



Q2. The circuit shown below is an example of a

Answer : Option A
Explaination / Solution:



Q3. The Boolean expression  simplifies to
Answer : Option D
Explaination / Solution:



Q4. The Boolean expression  simplifies to
Answer : Option A
Explaination / Solution:



Q5. The output expression for the Karnaugh map shown below is

Answer : Option D
Explaination / Solution:



Q6. The logical gate implemented using the circuit shown below where. V1 and V2 are inputs (with 0 V as digital 0 and 5 V as digital 1) and Vout is the output is

Answer : Option B
Explaination / Solution:


So, this logic level o/p is showing the functionality of NOR-gate.

Q7.
The second harmonic component of the periodic waveform given in the figure has an amplitude of

Answer : Option A
Explaination / Solution:
No Explaination.


Q8.
The TTL circuit shown in the figure is fed with the waveform X (also shown). All gates have equal propagation delay of 10ns. The output Y of the circuit is

Answer : Option A
Explaination / Solution:
No Explaination.


Q9. When a “CALL Addr” instruction is executed, the CPU carries out the following sequential operations internally: Note: (R) means content of register R ((R)) means content of memory location pointed to by R PC means Program Counter SP means Stack Pointer
Answer : Option D
Explaination / Solution:
No Explaination.


Q10. The following Karnaugh map represent a function F.

A minimized form of the function F is
Answer : Option B
Explaination / Solution:
No Explaination.