Download Electronics I Question Bank

Unit 1 QUESTION BANK
ELECTRONICS PAPER 1
Q1. What is a resistor? State its unit? What is its use?
Q2. What are the linear and non linear types of resistors? Give example.
Q3. Show the resistor family tree?
Q4. Explain the resistor colour code
Q5. Explain the colour coding for resistor below 10 Ω
Q6. Write a note on variable resistor
Q7. What are the different types of variable resistors? Explain
Q8. What are non linear and linear potentiometers?
Q9. Explain the following in 2-3 lines with symbols. Thermistors , varistors , LDR
Q10. What are the active and passive components?
Q11. What is the power rating of a resistor?
Q12. What is capacitance? State its unit. Write formula for capacitance.
Q13. Write the factors affecting capacitance of a capacitor
Q14. Write the symbols of the following types of capacitors fixed non electrolytic capacitors, variable
capacitors and polar electrolytic capacitor
Q15. Explain the charging of capacitor.
Q16. Explain the discharging of capacitor
Q17. Write the types of capacitors
Q18. Explain time constant.
Q19. Find the total capacitanceif the two capacitance of 20 µF and 5µF are connected in series and if
they are connected in parallel
Q20. Define self inductance and mutual inductance
Q21. Explain the types of inductors according to the type of core used
Q22. Define inductance of 1 henry of a inductor
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Components that conduct current in both the directions are known as -----.
Rheostats are ------- resistors
In resistors a larger physical size indicates a higher ----- rating
For PTC thermistors the resistance value ----- with increase in temperature
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Absence of fourth band means a resistor tolerance of --------The unit of capacitance is -------Capacitance of a capacitor is inversely proportional to -------Charging time constant is the time required to charge the capacitor to ------- % of the applied
voltage
A flow of electrons through a material is called --------a. Voltage b. current c. resistance d. conductance
A material that has very high resistance to electron flow is -----------a. Conductor b. semiconductor c. resistor d. insulator
A material that allows electron to flow easily is ---------a. Conductor b. semiconductor c. resistor d. insulator
A material that produces electrical friction and restricts the flow of electrons is --------a. Conductor b. semiconductor c. resistor d. insulator