What is the forbidden energy gap? How does it occur?

1137

---

What is its magnitude for ge and si?

1217

---

What types of carriers are present in space charge region?

1255

---

Define what are the charge carriers in p-type and n-type semiconductors?

1059

---

Why is schottky diode called hot-carrier diode?

1180

---

Why is bleeder resistance employed in a filter circuit?

1278

---

What are the applications of tunnel diodes?

1168

---

How the current is reduced to zero in a photodiode?

1121

---

Why half-wave rectifiers are generally not used in dc power supply?

1377

---

Why temperature coefficient of resistance of a semiconductor is negative?

1078

---

Define why iceo >> icbo?

1459

---

What is static resistance of a diode?

1164

---

Why iceo >> icbo?

1281

---

How an ammeter can be changed to a voltmeter?

1237

---

Define what happens to the series current , load current and zener current when the dc input voltage of a zener regulator increases?

1264

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