Describe the difference between p-type and n-type semiconductor materials.

1173

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Explain different types of feedback.

1103

---

Which configuration among ce, cb, cc gives highest input impedance and no voltage gain?

961

---

Define what is the significance of the arrow-head in the transistor symbol?

1457

---

What happens when a voltmeter is connected in series with the circuit?

1150

---

Name the breakdown mechanism in a highly doped p-n junction under reverse biased condition.

1055

---

What is the basis for classifying a material as a conductor, semiconductor, or a dielectric? Define what is the conductivity of perfect dielectric?

1903

---

Example for negative feedback and positive feedback.

1020

---

What is the importance of valence shell and valence electrons?

1121

---

What are the main purposes for which a common-collector amplifier may be used?

1233

---

Why an electric field is produced in a depletion region of a p-n junction?

1204

---

Define what is back diode?

1115

---

What is a high-pass filter?

1100

---

How is focussing achieved?

1167

---

Why is zener diode used as a voltage regulator?

1025

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