Analog and Digital Electronics - Online Test
Q1. The output expression for the Karnaugh map shown below is
Answer : Option B
Explaination / Solution:
Q2. Group
I gives two possible choices for the impedance Z in the diagram. The circuit
elements in Z satisfy the conditions R2C2 > R1C1. The transfer functions V0/V1 represents a kind of
controller.
Match the impedances in Group I with the type of controllers in Group II
Group I Group II
Answer : Option B
Explaination / Solution:
Q3. The circuit shown below is an example of a
Answer : Option A
Explaination / Solution:
Q4. Consider the Schmidt trigger circuit shown below
A triangular wave which goes from -12 to 12 V is applied to the inverting input
of OPMAP. Assume that the output of the OPAMP swings from +15 V to -15 V.
The voltage at the non-inverting input switches between
Answer : Option C
Explaination / Solution:
Let the voltage at non inverting terminal be V1, then after applying KCL at non
inverting terminal side we have
If V0 swings from -15 to +15 V then V1 swings between -5 V to +5 V.
Q5. The Boolean expression 
simplifies to
simplifies to
Answer : Option D
Explaination / Solution:
Q6. 
The logic function implemented by the following circuit at the terminal OUT is
Answer : Option D
Explaination / Solution:
From the figure shown below it may be easily seen upper MOSFET are shorted
and connected to Vdd thus OUT is 1 only when the node S is 0,
Since the lower MOSFETs are shorted to ground, node S is 0 only when input P
and Q are 1. This is the function of AND gate.
Q7. The Boolean expression 
simplifies to
simplifies to
Answer : Option A
Explaination / Solution:
Q8. 
In the following transistor circuit, 
, and 𝛽 and all the capacitances are very large
, and 𝛽 and all the capacitances are very largeThe mid-band voltage gain of the amplifier is approximately
Answer : Option D
Explaination / Solution:
The small signal model is shown in fig below
Q9. The output expression for the Karnaugh map shown below is
Answer : Option D
Explaination / Solution:
Q10. 
Assuming the OP-AMP to be ideal, the voltage gain of the amplifier shown below is
Answer : Option A
Explaination / Solution:
