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Chapter 2 - Quiz

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1. What are the standard conditions for measuring the power of a photovoltaic panel
Maximum sunshine of 500 W/m², panel temperature of 20°C, Air mass coefficient of 2.5 Maximum sunshine of 1500 W/m², panel temperature of 30°C, Air Mass coefficient of 1.5 Maximum sunshine of 100 W/m², panel temperature of 25°C, Air mass coefficient of 2.5 Instantaneous sunshine of 1000 W/m², panel temperature of 25°C, Air-Mass coefficient of 1.5
2. Regarding the role of the charge controller in a photovoltaic system, which of these statements is false?
Regulate the voltage to adapt it to the characteristics of the battery and its charge level Increase the power produced by solar panels Control the current to the battery to avoid overcharging or over-discharging Avoid the return of current to the solar panels at night
3. Which of these statements is true?
The current produced by the solar panels varies proportionally with the amount of sunlight and not with the temperature to which they are exposed, If the temperature increases, the open-circuit voltage of the solar panels also increases, The efficiency of a solar panel does not depend on the materials that make up its photovoltaic cells, The bypass diode system avoids the risk of damage to the solar panel in the event of strong sunlight.
4. What is the main functional and technological difference between PWM and MPPT solar controllers?
Their possibility of remote monitoring Their ability to manage short circuits in the installation Their efficiency in getting the most power out of the solar panels Their compatibility with certain types of solar batteries
5. What type of device will not work properly with a pseudo-sine signal converter?
Iron Multimedia equipment Any device equipped with a motor LED lamps
6. What is one of the features of pure sine converters?
Low power (< 500 W) Perfect square signal Signal similar to that of the network Only suitable for heaters
7. The following criteria are used when choosing a battery, with the exception of:
Its storage capacity Its depth of discharge Its short-circuit current Its nominal voltage
8. What is the main risk of using a cable with insufficient cross-section between the panels and the regulator?
An increase in the frequency of the current. Overheating by the Joule effect and excessive voltage drop. A reversal of polarity. Faster battery charging.
9. The formula ΔV = (2 * ρ * L * I) / S allows us to calculate:
The power of the panel. The efficiency of the battery. The voltage drop in a cable. The amount of sunshine received.
10. What is the role of a surge arrester in a photovoltaic installation?
To increase energy production. To protect electronic components against lightning-related surges. To cool the solar panels. To convert direct current.
11. What does the acronym MPPT stand for?
Maximum Photon Power Transfer Maximum Power Point Tracker Multi-Panel Parallel Technology Minimum Power Protection Time