Class 10 Practice Level 2 – Sources of Energy – Set – 1

Total questions: 25

What is the primary function of a solar inverter in a solar power system?

To store solar energy

To convert DC to AC

To track the sun's position

To increase the temperature

None

The efficiency of a wind turbine is mainly affected by:

Temperature

Wind speed

Humidity

Sunlight

None

Which of the following processes is used to produce biogas?

Combustion

Fermentation

Distillation

Electrolysis

None

What is the role of a turbine in a hydroelectric power plant?

To store water

To convert mechanical energy to electrical energy

To regulate water flow

To generate heat

None

Burning fossil fuels primarily releases which greenhouse gas?

Nitrogen

Oxygen

Methane

Carbon dioxide

None

Which of the following best describes the function of a solar collector?

To store solar energy

To convert solar energy into electricity

To absorb and transfer solar heat

To reflect solar radiation

None

Which of the following is a commonly used method for storing excess renewable energy?

Combustion

Chemical batteries

Direct use

Cooling

None

Tidal energy harnesses power from which natural phenomenon?

Ocean currents

Waves

Tides

Wind

None

Which of the following measures can improve the energy efficiency of buildings?

Single-pane windows

Incandescent lighting

Poor insulation

Double-glazing windows

None

10.

The fuel used in nuclear reactors to generate energy is primarily:

Hydrogen

Uranium

Coal

Natural gas

None

11.

Which of the following technologies can store solar energy for use at night?

Wind turbines

Solar cells

Thermal energy storage

Hydroelectric dams

None

12.

Wind energy is considered to be:

Highly polluting

Finite

Intermittent

Non-renewable

None

13.

Which of the following is an advantage of using biomass as a source of energy?

High carbon emissions

Non-renewable

Reduces waste

Limited availability

None

14.

The environmental impact of hydropower includes:

Air pollution

Deforestation

Greenhouse gas emissions

Habitat disruption

None

15.

Which of the following is a limitation of renewable energy sources?

Infinite supply

High initial cost

Non-polluting

Sustainable

None

16.

Geothermal energy is most suitable for regions with:

High wind speeds

Abundant sunlight

Volcanic activity

Low rainfall

None

17.

Which of the following practices promotes energy conservation?

Using incandescent bulbs

Leaving appliances on standby

Insulating homes

Running water heaters all day

None

18.

The efficiency of a solar panel can be increased by:

Placing it in shaded areas

Tilting it towards the sun

Covering it with dust

Using it at night

None

19.

Wind turbines are most efficient when placed:

In valleys

Near buildings

On hilltops

In forests

None

20.

Pumped-storage hydroelectricity is used to:

Generate electricity from wind

Store energy during low demand

Produce solar power

Generate tidal energy

None

21.

A solar panel generates 300 watts of power in 5 hours of sunlight. Calculate the total energy generated in kilowatt-hours (kWh).

0.15 kWh

1.5 kWh

15 kWh

150 kWh

None

22.

A wind turbine with a capacity of 2 MW operates at a capacity factor of 30%. Calculate the average power output in megawatts (MW).

0.3 MW

0.6 MW

1.2 MW

1.8 MW

None

23.

If a biogas plant produces 500 cubic meters of biogas per day and the energy content of biogas is 21 MJ per cubic meter, calculate the total energy produced per day in megajoules (MJ).

10,500 MJ

105,000 MJ

1,050 MJ

52,500 MJ

None

24.

A hydroelectric plant with a water flow rate of 500 cubic meters per second and a height of 100 meters has an efficiency of 90%. Calculate the power output in megawatts (MW). (Use g = 9.8 m/s² for gravitational acceleration and the density of water = 1000 kg/m³)

44.1 MW

441 MW

49 MW

490 MW

None

25.

An energy-efficient LED bulb consumes 10 watts and operates for 1000 hours. Calculate the total energy consumption in kilowatt-hours (kWh).

1 kWh

10 kWh

100 kWh

1000 kWh

None

1 out of 25

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Class 10 Practice Level 2 – Sources of Energy – Set – 1

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