## Q- Who was the founder of the ‘Bengal School of Art’?

Chapter: Ideas of History

## Q- State the function of split rings in a dc motor.

Chapter: Current Electricity

## Q- What is the name of the autobiography of Rabindranath Thakur?

Chapter: Ideas of History

## Q- Deduce a relation between 1 kWh and joule. 1 kWh is the amount of energy consumed when 1000watt power is used in 1 hour.

Chapter: Current Electricity

## Q- On an electric bulb is written 220V-40 W. What do they signify?

Chapter: Current Electricity

## Q- A 60W electric lamp connected in series with a room heater is further connected across the mains. If 60 W lamp is now replaced by a 100W lamp, will the heat produced by the heater be smaller, remain the same or be larger and why?

Chapter: Current Electricity

## Q- The maximum power a 20Ω resistor can dissipate as heat without being damaged is 2kW.Would you connect this resistor directly a 300V dc source of negligible internal resistance?

Chapter: Current Electricity

## Q- Distinguish between kilowatt and kilowatt hour.

Chapter: Current Electricity