SOLAR PLANT INTERVIEW QUESTION



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SOLAR PLANT INTERVIEW QUESTION

Prepare for your next interview with these Mechanical Engineering Job Interview Questions! We've compiled a list of the most popular interview questions in the field.
This article will give you the answers to some of the most common interview questions asked by mechanical engineers.
Time span of video lecture:
Question number 1: What is photovoltaic system?
Answer:
A system which uses solar cells to convert light into electricity; consists of multiple components, including solar cells, mechanical and electrical connections and mountings and means of regulating and/or modifying the electrical output.
Question number 2: What is difference between photovoltaic (PV) and photovoltaic cell?
Photovoltaic:
Technology and research that relates to the application of solar cells for energy by converting radiant energy directly to electricity.
Photovoltaic cell:
The smallest semiconductor elements contained within a PV module that perform the immediate conversion of light into electrical energy. It is also called a Solar cell.
Question number 3: What is difference between monocrystalline and polycrystalline cell?
Answer:
Monocrystalline:
Single silicon crystal; monocrystalline panels are made from one large, single silicon crystal making it rated the most efficient solar technology available.
Polycrystalline cell:
Solar cells produced from processed liquid silicon; when solidified, multiple silicon crystals are formed. Less efficient than monocrystalline cells.
Question number 4: What is solar constant?
Answer:
The average density of solar radiation measured outside Earth's atmosphere and at Earth's mean distance from the sun, equal to 0.140 watt per square centimeter.
Question number 5: What is photovoltaic efficiency?
Answer:
the ratio of power produced by a solar cell at any instant to the power of radiant energy striking the cell; certain factors such as temperature can cause the efficiency rate to vary during the day.
Question number 6: What is ampere (amp)?
Answer:
Unit of electric current (refers to flow of current); one ampere corresponds to a certain number of electrons passing a fixed point each second.

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