Define hard-driving or over-driving?

1215

---

Write down the expression for the average output voltage for step down and step up chopper?

1168

---

Explain what is an integrator?

1128

---

What are the applications of a series inverter?

1339

---

what is an adder or summing amplifier?

1115

---

Explain the operation of 3φ bridge inverter for 1200 degree mode of operation with aid of relevant phase and line voltage waveforms?

1089

---

Explain the operation of sequence control of ac voltage controller?

1118

---

Why opamp called operational amplifier?

1154

---

Explain the working of voltage commutated chopper with aid of circuit diagram and necessary waveforms. Derive an expression for its output voltage?

1148

---

Explain what is an excitation table?

1198

---

What are the types of commutation? (Or) turn off methods?

1075

---

What is characteristic of ideal opamp?

1062

---

What are the advantages of free wheeling diodes in a controlled in a controlled rectifier?

1099

---

What is meant by duty-cycle?

1158

---

What is commutation angle or overlap angle?

1482

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