Linear Integrated Circuits Questions and Answers
Q1.
The output voltage of an open-loop differential amplifier is equal to
Answer :
Product of voltage gain and the difference between the two input voltages
Q2.
Which of the following is not a feedback configuration?
Answer :
Current-Voltage feedback
Q3.
The output resistance of the op-amp with feedback is
Answer :
Smaller than that of the output resistance without feedback
Q4.
Voltage follower is also called as
Answer :
Non-inverting amplifier
Q5.
Why differential amplifiers are preferred for instrumentation and industrial applications?
Answer :
Reject common mode voltage
Q6.
How is it possible to vary the voltage from closed loop gain to the open loop gain?
Answer :
By using differential amplifier with variable gain
Q7.
The input offset voltage of 741 op-amp has an absolute maximum value of 6mv, which means
Answer :
Maximum difference between input terminals in 741 op-amp can be large as 6mv DC
Q8.
When the input voltage is reduced to zero in a closed loop configuration the circuit acts as
Answer :
Inverting and non-inverting amplifier
Q9.
The offset voltage in the voltage follower is balanced using
Answer :
Voltage drop across feedback resistor
Q10.
The maximum amount by which the two input bias current may differ is known as
Answer :
Input offset current
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