Linear Integrated Circuits Questions and Answers, Set 51

Linear Integrated Circuits Questions and Answers


Q1. 
State the reason for thermal shutdown of IC regulator?

Answer : 
Increase in temperature


Q2. 
The change in output voltage for the corresponding change in load current in a 7805 IC regulator is defined as

Answer : 
Load regulation


Q3. 
Which of the following is not a characteristic of adjustable voltage regulators?

Answer : 
Non-versatile

Q4. 
What is done in switching regulators to minimize its power dissipation during switching?

Answer : 
Uses external transistor and 1mH choke


Q5. 
Fixed voltage regulators and adjustable regulators are often called as

Answer : 
Series dissipative regulators


Q6. 
Which of the following is considered to be the most important components of the switching regulator?

Answer : 
RL or RLC filter


Q7. 
Which is the most commonly used low voltage switching regulators?

Answer : 
Silicon steel EI butt stacks


Q8. 
What is the conversion ratio of the phase detector in 565 PLL?

Answer : 
0.4458


Q9. 
At what range the PLL can maintain the lock in the circuit?

Answer : 
Lock in range


Q10. 
At which state the phase-locked loop tracks any change in input frequency?

Answer : 
Phase locked state

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