Your current solar and basics of electricity, knowledge self-assessment test

What term is used to indicate the net present cost of electricity generation for a generating plant over its lifetime? Effectively, the cost per kWh over the lifetime of the plant in today’s terms.

Levelized cost of energy
Simple payback
Local cost of energy
Energy generation cost

At an average of 15 USD cents per kilo Watt-hour, Levelized cost of energy, the cheapest form of energy generation currently is:_____________

Hint: Multiple answers can be right.

Nuclear
Coal
Wind
Solar

The potential difference between two points in a circuit is measured in which units?

Current
Voltage
Resistance
None of the Above

What is the unit that electrical current is measured in?

V (Voltage)
A (Ampere)
R (Resistance) (Ω)
U (Potential Difference)

DC Power is calculated in an electrical circuit by multiplying current with.

Resistance
Energy
Inductance
Voltage

Energy is calculated in and electrical circuit by multiplying power with.

Resistance
Time
Inductance
Voltage

The amount of power that an inverter can supply at once is measured in:

Volts
Ampere
Watt hours or Kilowatt hours
Watts or Kilowatts

The amount of energy that can be stored in a battery is measured in:

Volts
Ampere
Kilowatt hours
Kilowatts

If a 400W Solar panel is connected to a charge controller and connects to a 48 V battery bank it will supply 8.3 A. How much current will flow if it is connected to a 12V battery bank?

8.3 A
11.1 A
16.6 A
33,3 A

If 4 x 12 Volt batteries are connected in parallel with each other, what is the total voltage that will be measured across battery bank?

48 V
24 V
12 V
0 V

If 4 x 40 Volt solar panels are connected in series with each other, and one panel goes permanently into short circuit, what is the total voltage that will be measured across the string of solar panels?

160 V
120 V
40 V
0 V

The main function of a charge controller in a DC-based solar power is.

Disconnect loads if the battery voltage falls below a set voltage.
Stop charging a battery if the battery reaches a set voltage.
All of the above

What is the approximate efficiency of a Mono-Crystalline solar module?

15 %
20 %
25 %
30 %

What is the Energy Payback time typically of a solar panel manufactured in China and used in Africa.

Less than two years
Less than one year
More than two years
More than one year

which of the following types of solar systems requires battery storage?

Hint: Multiple answers can be right.

Grid Tied solar system
Off-grid solar system
Hybrid solar system
All Above

In which unit is irradiance measured?

W/kg
W/joule
W/kWp
W/m2

Peak sun hours are the number of hours that the sun shines per day.

True
False

In what units is a solar system’s specific yield measured?

kWh/kWp/year
kWh/kWp/m2
kWh/m2/year
kWh/day

How is the inclination angle of a solar panel measured?

Angle from the horizon plane
Angle from the vertical plane
Angle from North
Angle from South

A rule of thumb is to mount modules facing the Equator at an angle equal to the site’s latitude plus ___ Degrees.

5 Degree
10 Degree
15 Degree
20 Degree