Linear Integrated Circuits Questions and Answers
Q1.
What happens if the frequency or amplitude of the input signal is increased to exceed slew rate of the op-amp?
Answer :
Distorted output
Q2.
State the application in which summing, scaling or averaging amplifiers are used?
Answer :
Audio mixers
Q3.
In which type of amplifier, the input voltage is amplified by a scaling factor
Answer :
Weighted amplifier
Q4.
How many additional sources are connected to each input terminal to obtain an eight input summing amplifier?
Answer :
Three
Q5.
What are the features of instrumentation amplifier?
Answer :
1. Low noise
2. High gain accuracy
3. Low thermal and time drift
Q6.
The temperature of a thermistor increases, when the value of its resistance
Answer :
Decrease
Q7.
Strain gage are used to monitor change in
Answer :
1. Pressure
2. Torque
3. Displacement
Q8.
What will be the resultant circuit, when the thermistor in the bridge transducer is replaced by a strain gage?
Answer :
Analog weight scale
Q9.
In what way the internal construction of the op-amp contribute to capacitive effect in op-amp?
Answer :
Formation of stray capacitor
Q10.
How to modify a low voltage DC voltmeter to low voltage ac voltmeter
Answer :
Add a full wave rectifier in the feedback loop
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