Define energy conversion efficiency. Also state the first law of thermodynamics and mention its significance through fuel input as in petrol. An IC engine has an input of 500KWh. Energy equivalent to 350 KWh is utilized for running a motor. What is the energy conversion efficiency?

A car of mass 2000 kg is lifted up a distance of 30 m by a crane in 1 minute. A second crane does the same job in 2 minutes. Do the cranes consume the same or different amounts of fuels? What is the power applied by each crane? Neglect power dissipation against friction.

What are the types of energy sources? State various forms of renewable and non-renewable energy sources.

Solar air heater

Standalone PV System

Explain Solar water heater with neat schematic diagram. Also compare it with electric heater in terms of advantages and disadvantages.

Draw the block diagram of solar drying system and explain its different component.

Explain the Trombe wall in detail. Also explain effect of window orientation.

Explain floating drum biogas digester with neat diagram. Also write its advantages and disadvantage

Explain schematic flow sheet for high rate farm scale digester.

Draw and explain current-voltage characteristics of a solar cell. What is packing factor?

 Explain working of Solar Lantern with proper sketch.

What is the Kirchoff's Law of radiation and what are the main features of Solar radiation?

Renewable energy systems

Rural energy planning

Combustion analyser

Waste heat recovery

Sankey Diagram

The operating power factor during audit is 0.7. Total load connected is 180 kW. Determine the rating of power capacitors for improving the power factor to 0.9.

How do they differ from ordinary steam boilers?