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Sujet Examen

1. The document is an exam for a Master's program in mechanical engineering focusing on renewable energy. It is scheduled for January 30, 2019 from 8:30 to 10:30. 2. The document provides background information on renewable energies like wind, solar, geothermal, biomass, and hydropower. It explains some key principles like tidal energy relying on the moon's gravity and hydropower relying on water flow. 3. Renewable energies are important for two reasons - they are indefinitely sustainable sources of energy unlike fossil fuels, and they produce fewer greenhouse gas emissions. However, renewable sources also face challenges in large-scale deployment due to technological barriers, high initial costs, and issues of

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996 views1 page

Sujet Examen

1. The document is an exam for a Master's program in mechanical engineering focusing on renewable energy. It is scheduled for January 30, 2019 from 8:30 to 10:30. 2. The document provides background information on renewable energies like wind, solar, geothermal, biomass, and hydropower. It explains some key principles like tidal energy relying on the moon's gravity and hydropower relying on water flow. 3. Renewable energies are important for two reasons - they are indefinitely sustainable sources of energy unlike fossil fuels, and they produce fewer greenhouse gas emissions. However, renewable sources also face challenges in large-scale deployment due to technological barriers, high initial costs, and issues of

Uploaded by

Schmetterling Traurig
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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FACULTE DES SCIENCES DE L’INGENIEUR

DEPARTEMENT DE GENIE MECANIQUE

LMD

1ere année Master Option : Energie renouvelable

Examen

Matière : anglais technique : le 30 Janvier 2019 de 08h30. à 10h30. Durée : 01h 30 min.

The most common examples of renewable energies include wind, solar, geothermal, biomass,
and hydropower. This is in contrast to non-renewable sources such as fossil fuels.
Geothermal energy utilizes the Earth’s internal heat, tidal energy relies on the gravitational
pull of the moon, and hydropower relies on the flow of water.
Renewable energy systems is important for the Globe’s future for two main reasons: it
provide energy from sources that will never deplete, and it produces less greenhouse gas
emissions than fossil fuel energy systems.
While renewable energy systems are better for the environment and produce less emissions
than conventional energy sources, many of these sources still face difficulties in being
deployed at a large scale including, but not limited to, technological barriers, high start-up
capital costs, and intermittency challenges.
It is important to note that the terms ‘renewable energy’, ‘green energy’ and ‘clean energy’
are not interchangeable in all cases; for example, a ‘clean’ coal plant is simply a coal plant
with emissions reduction technology. The coal plant itself is still not a ‘renewable energy’
source. ‘Green energy’ is a subset of renewable energy, which boasts low or zero
emissions and low environmental impacts to systems such as land and water.

QUESTION 01 : Answer the following questions


1/ Translate the underlined words
2/ Give three examples of renewable energy and their principle.
3/ Why is renewable energy so important?
4/ What are the advantages and disadvantages of this type of energy?
5/ Are ‘renewable energy’, ‘green energy’ and ‘clean energy’ the same? and why ?

QUESTION 02 : Translate the following paragraph into English


In most of today solar cells the absorption of photons, which results in the generation of the
charge carriers, and the subsequent separation of the photo-generated charge carriers take
place in semiconductor materials (for the conversion of energy of photons into electrical
energy). One of the most common semiconducting materials is the crystalline silicon (c-Si)
solar cell, dominates the PV market at present, semiconductor electronic devices are produced
by doping, i.e., introducing controlled amounts of impurity into a semiconducting.

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