Linear Integrated Circuits Questions and Answers
Q1.
The clipping level in op-amp is determined by
Answer :
Reference voltage
Q2.
Why a voltage follower stage is connected at the output of the negative small signal half wave rectifier?
Answer :
Due to Non-uniform output resistance
Q3.
The resistor in the peak detector are used to
Answer :
Protect op-amp from damage
Q4.
Determine the time period of a monostable 555 multivibrator.
Answer :
T = 1.1RC
Q5.
How to obtain symmetrical waveform in Astable multivibrator?
Answer :
Use clocked JK flip-flop
Q6.
What is the function of low pass filter in phase-locked loop?
Answer :
Removes high frequency noise
Q7.
What happens when VCO output is 90o out of phase with respect to input signal?
Answer :
Perfect lock
Q8.
The output frequency of the VCO can be changed by changing
Answer :
1. External tuning resistor
2. External tuning capacitor
3. Modulating input voltage
Q9.
What must the typical value of n for a frequency multiplication / division? (n->order of harmonics)
Answer :
n = 7
Q10.
To get a maximum output current, IC regulation are provided with
Answer :
Heat sink
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