SCERT Maharashtra solutions for सायन्स अँड टेक्नॉलॉजी पार्ट २ [इंग्रजी] इयत्ता १० महाराष्ट्र राज्य मंडळ chapter 5 - Towards Green Energy [Latest edition]

In modern civilization, __________ has become a primary need.

Most electric power plants are based on the principle of ___________.

Principle of Electromagnetic induction was invented by the scientist ___________.

In the power plant based on nuclear energy, __________ is used to rotate the generator.

When a neutron is bombarded on an atom of uranium, ____________ neutrons generated in this process.

Kinetic energy in flowing water drives ________ to generate electricity.

Wind turbines with capacity are commercially available.

Solar photovoltaic cells convert the solar radiation energy directly into ______ energy.

A silicon solar cell of dimension 1 sq.cm. generates a current of about ___________.

A silicon solar cell of dimension 1 sq.cm. generates __________ potential difference.

In nuclear power plants, neutrons are bombarded on atoms of __________.

Find an odd one out.

Find an odd one out.

Find an odd one out.

Find an odd one out.

Find an odd one out.

Find an odd one out.

The Electric Power Stations based on Thermal Energy.

Nuclear power plants in India

Major hydroelectric power plants in India

Forms of energy.

A machine/An engine required to rotate the generator.

Name any two natural gases.

Type of power generation station at Chandrapur.

Hydroelectric power station : Water stored in dams : : Nuclear power station : ____________

Stove : Thermal energy : : Sewing machine : _____________

Power available from solar cells : DC : : power require to run domestic equipments : _________

Thermal power generation : Air pollution : : Nuclear power generation : _____________

Write the function of Generator.

Write the function of Turbine.

Write the function of Condenser.

The power produced from solar cells is a DC.

Electrical energy can be generated using wind.

While producing hydroelectric energy, there is no pollution.

In a windmill, the rotating blades drive the turbine and the turbine in turn drives the generator to generate electricity.

In nuclear power plants, the chain reaction cannot be controlled.

The disposal of nuclear waste safely is a big challenge before scientists.

Efficiency of power generation plants based on energy of natural gas is higher than that of the power generation plant based on coal.

In a hydroelectric power plant, the potential energy in water stored in a dam is converted into kinetic energy.

In nuclear power plants, turbines working on solar panels are used.

The potential difference available from a solar cell depends on its area.

Match the following.

Match the following.

Define.

Electromagnetic induction

Define.

Nuclear fission

Write the advantages of the Hydroelectric Power project.

Write the problems associated with hydroelectric power projects.

Write the merits of nuclear energy.

Write the demerits of a nuclear energy plant.

Draw the flowchart showing generation of electrical energy through hydroelectric power plant.

Which substance is used as fuel in nuclear power plants?

Energy from fossil fuels and nuclear plants are not eco-friendly sources, why?

Solar reflectors are important, why?

In fuels coal and natural gas, which one is eco-friendly? why?

State the importance of inverters.

Why are control rods used in nuclear reactors?

What is green energy?

Which energy source can be called a green energy source?

Explain: Fossil energy is not an example of green energy.

Give scientific reason.

The schematic of a turbine also varies according to the type of power generation.

Give scientific reasons:

It is absolutely necessary to control the fission reaction in nuclear power plants.

Give scientific reason

It is possible to produce energy from mW to MW using solar photovoltaic cells.

Give scientific reason.

Hydropower, solar energy and wind energy are called renewable energy.

Give scientific reason.

Energy saving is a need of the hour.

Write a short note.

Lake Tapping

Write a short note.

Nuclear Power Plant

Write a short note.

Problems due to nuclear power plant

Explain the difference between conventional and non-conventional sources of energy.

Distinguish between the following.

Thermal power plant and Solar thermal power plant

Distinguish between the following.

Electricity generation from solar cells and solar thermal power generation

Observe the given diagram and answer the questions given below.

1. What is the name of machine given in the diagram?
2. Write down the function of this machine in short.
3. How does it gets/forms the motion?

Observe the given diagram and answer the questions.

1. Which type of energy is generated?
2. This power station depends on which factors?
3. Is it environment friendly?

Complete the table.

Complete the following flow chart.

Complete the following flow chart.

Complete the following flow chart.

Draw the flowchart for the given power stations.

Thermal energy based electric power plant

Draw the flowchart for the given power stations.

Power generation plant on energy of natural gas

Explain the stages in electric generation from the given schematic diagram.

Draw the schematic diagram of natural gas power plants and answer the following questions.

1. Where is the power plant based on natural gas in Maharashtra?
2. Why is there less pollution by natural gas power plants?
3. Give the example of eco-friendly electric power generation plants.

Solar reflectors are important, why?

Complete the table.