Explain different types of d.c motors? Give their applications

1147

---

explain the process of commutation in a dc machine. Explain what are inter-poles and why they are required in a dc machine.

1202

---

Explain the process of commutation in a dc machine.

1064

---

Explain what are inter-poles and why they are required in a dc machine.

1116

---

Comment on the working principle of operation of a single-phase transformer.

1221

---

Mention the disadvantages of low power factor? How can it be improved?

1178

---

Mention the disadvantages of low power factor?

1162

---

State the methods of improving power factor?

1179

---

State the factors, for the choice of electrical system for an aero turbine.

1192

---

Explain the terms real power, apparent power and reactive power for ac circuits and also the units used.

1119

---

Define average demand?

1393

---

Define maximum demand?

1090

---

Define demand factor?

1144

---

Define load factor?

1138

---

Explain forward resistance, static resistance and dynamic resistance of a pn junction diode.

1224

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