Solar Energy Systems Overview Coursera Quiz Answers – Networking Funda

All Weeks Solar Energy Systems Overview Coursera Quiz Answers

Solar Energy Systems Overview Week 01 Quiz Answers

Solar Power Self-Check Quiz Answers

Q1. Where were Solar cells first produced?

• USA
• Russia
• Japan

Q2. Which country has the most PV on a per-capita basis?

• China
• United States
• Germany

Q3. Cloudy days still produce significant PV Energy. (T/F)

• True
• False

Q4. Discarded PV modules are hazardous to the environment.

• True
• False

Q5. The “Net Metering” incentive “banks” your excess energy with the utility. (T/F)

• True
• False

Solar Power Graded Quiz Answers

Q1. What country has installed the most PV?

• China
• USA
• Japan

Q2. Batteries ________________ (select all that apply)

• can “shave” electrical demand peaks.
• reduce use of Natural Gas Peaking plants.
• can supply a steady source of electricity.

Q3. PV Modules use _____________________ (select all that apply)

• aluminum.
• copper.
• silicon.
• lithium.

Q4. The net metering incentive is valued at the standard per kWh rate. (T/F)

• False
• True

Q5. What are the two least expensive forms of energy for most applications?

• Nuclear and Coal
• Photovoltaics and Wind
• Hydro Power and Geo-Thermal

Q6. Between 2015 and 2020, what was the largest United States PV market segment?

• Commercial
• Utility
• Residential
• Industrial

Q7. About how much solar energy does the earth’s land surface receive annually?

• 200 Trillion kWh
• 200,000 trillion kWh
• 200 Billion kWh

Q8. Wind Power is very site specific. (T/F)

• True
• False

Q9. Select the response that presents the solar history events in the correct order.

A: Solar cells used widely on spacecraft

B: Solar cell developed by Bell Labs

C: Price of solar cells decreased due to mass production

D: China entered solar market

• A, B, C, D
• B, A, D, C
• B, A, C, D

Q10. Select all solar energy incentives from the list below.

• Tax credits
• Net metering
• Accelerated depreciation
• Government buy-back of used equipment
• Cash rebates

Solar Energy Systems Overview Week 02 Quiz Answers

The Nature of PV Self-Check Answers

Q1. When added to crystalline silicon which element gives a negative charge?

• Aluminum
• Phosphorus
• Boron

Q2. A String Inverter has one or more high DC voltage inputs and outputs 208 or 240 VAC.

• True
• False.

Q3. When bolting mounting racks to a roof, they must be attached to the roof rafters or trusses.

• True.
• False

Q4. Ground mounting provides more options than roof mounting.

• True
• False

Q5. A ballasted mounting system prevents roof penetration on a flat roof.

• True.
• False

The Nature of PV Graded Quiz Answers

Q1. When added to crystalline silicon, which element gives a positive charge?

• Phosphorus
• Arsenic
• Boron

Q2. Increasing PV cell area increases

• Voltage
• Current

Q3. A string inverter has one or more high DC voltage Inputs and usually adds controls, metering and safety features.

• True
• False

Q4. Which components are part of the “balance of system”

• Datalogger
• Disconnect switches
• Cadmium telluride module
• Bilateral meter
• Polycrystalline module
• Grounding system
• Inverter

Q5. Standing seam roof mounts avoid roof penetration.

• True
• False

Q6. A typical roof mount with PV adds more than 6 pounds/sq.ft. of roof loading.

• True
• False

Q7. Ground mounting:

• Allows trackers to maximize yearly output
• Costs less than roof mounting
• Allows for the best orientation
• Can provide variable tilt

Q8. A stand-alone or off-grid system:

• Usually requires a battery bank
• Can only provide power for a few hours.
• Requires a generator
• Requires a charge controller
• Requires a different type of inverter than grid-tied systems

Q9. A microinverter:

• Mounts on the module or racking kit.
• Maximizes the power output of one (or two) PV modules
• Controls the charge going from the panel to batteries.

Q10. Select the option that best describes the flow of energy through a grid tied system.

• DC power from solar panels is converted to AC current by an inverter, then fed into a building’s electrical service panel, where it is distributed throughout the building.
• Power from solar panels is directed into an inverter where it is split into DC and AC power.
• AC power from solar panels is converted to DC current by an inverter, then fed into a building’s electrical service panel, where it is distributed throughout the building.

Q11. A solar cell converts light to electricity by exciting electrons in silicon cells.

• True
• False.

Solar Energy Systems Overview Week 03 Quiz Answers

Solar Power ROI Self-Check Answers

Q1. What does PPA stand for?

• Power Purchase Agreement
• Personal Procurement Authorization

Q2. A PPA

• Results in system maintenance costs for the land owner during the lease term.
• Is a way to save money on large systems.
• Uses a developer’s money to buy a PV system.

Q3. PV system costs are currently (as of 2020)

• Decreasing.
• Increasing.

Q4. To estimate PV system costs, the calculation should include permitting costs.

• True.
• False.

Q5. What is the federal tax incentive for solar PV in 2020?

• 30%
• 22%
• 20%
• 26%

Solar Power ROI Graded Quiz Answers

Q1. Financial benefits of a solar PV system are maximized by

• Leasing
• PPA
• Owning

Q2. Solar PV system costs are:

• Decreasing, as of 2020.
• Often lowered by government incentives.
• Reduced by using accelerated depreciation.

Q3. PV system costs include:

• Hardware
• Installation labor
• Design costs
• Permitting costs

Q4. Which of the following are additional PV system costs?

• Drawings
• Upgrading equipment to meet specifications
• Engineering
• Rental equipment

Q5. Solar power from a large plant costs less than $0.04/kWh.

• True
• False

Q6. Creating a new nuclear power plant is less expensive than solar power plant.

• True
• False

Q7. The primary reason that most business owners want solar power is:

• To save money and control costs.
• To improve their public image.
• To “go green” and save CO2.

Q8. An investment in solar PV:

• Is a higher-yield investment than a standard savings account.
• Can provide an ROI greater than 10%.
• Is good for 25 years or more.
• Requires no maintenance.

Q9. Solar fusion energy is preferred to nuclear fission because:

• Nuclear fission produces radioactive waste.
• Solar is more widely available.
• It is less expensive.
• It is lower risk.

Q10. Which factors should be included in a payback calculation for a residential customer?

• Estimated energy savings.
• Accelerated depreciation.
• Cost of system, less incentives.

Q11. PV output degrades by approximately what percent each year?

• 1% per year
• 0.5% per year.
• 0.1% per year

Get All Course Quiz Answers of Solar Energy for Engineers, Architects and Code Inspectors Specialization

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