COMPUTER SCIENCE

  Q1. The energy gap in a semiconductor is typically of the order of: a) 10 eV b) 5 eV c) 1 eV ✅ d) 0.01 eV Q2. A PN junction acts as a: a) Rectifier ✅ b) Amplifier c) Oscillator d) Filter Q3. In forward bias, the width of the depletion region: a) Increases b) Decreases ✅ c) Remains constant d) Becomes zero Q4. In reverse bias, the current through a PN junction is mainly due to: a) Majority carriers b) Minority carriers ✅ c) Both d) None Q5. A transistor can be used as a: a) Switch ✅ b) Resistor c) Capacitor d) Diode Q6. The configuration of a transistor that provides the highest current gain is: a) Common Base b) Common Collector c) Common Emitter ✅ d) None of these Q7. TTL stands for: a) Transistor Transistor Logic ✅ b) Transistor Tuned Logic c) Triode Transistor Logic d) Transient Trigger Logic Q8. Which of the following logic families has the lowest power consumption? a) TTL b) ECL c) CMOS ✅ d) RTL Q9. In a digital circuit, a diode can act as a: a) Amplifier b) Switch ✅ c) Filt...

                                                                      UNIT – I: Fundamentals of Semiconductor Physics Short Answer / 2 Marks Questions Q1.What is the difference between a conductor, semiconductor, and insulator based on energy bands? Q2. Define intrinsic and extrinsic semiconductors. Q3. What is a depletion region in a pn-junction diode? Q4.What happens to a pn-junction diode under forward bias and reverse bias? Q5. What is the use of a diode as a switch? Q6. Define transistor and its types. Q7. What are the three configurations of a BJT? Q8. Define saturation and cutoff region of a transistor. Q9.What are Integrated Circuits (ICs)? Q10.Compare TTL, ECL, and CMOS logic families (any two differences). Long Answer / 5–10 Marks Questions Q11. Explain the formation of ...