Explain Transistor action with neat diagram.

Explain and draw v - i relation of a diode.

What are the differences between a synchronous motor and an induction motor?

Draw and Describe torque-speed characteristic of different DC motors.

Explain working principle, construction details and EMF equation of Transformer.

An inductive coil of resistance 32 ohm and reactance 15.7 ohm is connected in series with a capacitor of reactance 79.5 ohm. The circuit is connected across 500 V AC supply, determine

(a) Current,

(b) Phase difference between voltage and current,

(c) Magnitude of voltage across the inductive coil, and

(d) Total power absorbed.

Discuss Self and Mutual Induction.

 Explain Kirchhoff's Voltage Law (KVL).

In an electrical system what is the importance of active power and reactive power?

Explain EMF and Current, Effects of Electric Current.

Mention the key features of a floating drum bio-gas plant with a neat sketch.

 Discuss, in detail the various types of hydrothermal resources.

What is solar drying and its types? Explain with neat sketches wherever possible.

What is solar drying and its types? Explain with neat sketches wherever possible.

Discuss, in detail the two types of solar water heaters with neat sketches.

Describe in detail any two solar radiation measuring instruments.

 Elaborate on the role of control rods in a nuclear fission reaction.

Discuss the chemical structure of petroleum in detail.

Explain the proximate analysis of coal in detail.

Describe the classification of energy resources as per its nature, availability and storing capacity.