What is the power factor of a transformer at no load?

1115

---

What happens to voltage when current is zero?

1306

---

How does an oscillator differ from an amplifier?

1171

---

List examples of current sources?

1122

---

What is the phase relationship between the primary and secondary voltages of a transformer?

1103

---

What are the functions of different probes used in cro?

1209

---

What is corkscrew rule?

1157

---

What is the name of the winding from which the supply is taken for load connections?

1090

---

What is meant by positive and negative feedback?

1059

---

Name two low frequency oscillators?

1435

---

What is instrumental error?

1205

---

What are the basic component of a cro?

1256

---

The size and construction of bushings in a transformer depend upon?

1787

---

Differentiate between kirchhoff’s first law and kirchhoff’s second law?

1078

---

Explain the purpose of inductor in an electric circuit?

1142

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