Title: Unit 6 Quiz
Course: SGRD 105 Microgrids and Renewable Energies > Section: SGRD 105 Microgrids and Renewable Energies

Q: Most of the energy emitted by the sun is in the form of
- ultraviolet light
- radio waves
- microwaves
- visible light
A: visible light

Q: At the top of the Earth’s atmosphere the total solar power per unit area is
- 3.8 × 10^20 MW
- 1380 W/m^2
- 1000 W/m^2
- 60 Hz
A: 1380 W/m^2

Q: The altitude angle of the sun is the angle measured with respect to
- local horizon
- due north
- due east
- due west
A: local horizon

Q: A rule of thumb for good performance of a PV array is set the tilt angle to
- zero (horizontal)
- 90◦ (vertical)
- site latitude
- site latitude − 45◦
A: site latitude

Q: For photovoltaic semiconducting materials, what source of energy moves charge carriers across the band gap
- mechanical
- thermal
- chemical
- solar
A: solar

Q: Efficiency of commercially available crystalline silicon PV cells are around
- 100 %
- 60 - 80 %
- 30 - 50 %
- 15 - 20 %
A: 15 - 20 %

Q: To increase voltage, PV modules are connected in
- parallel
- series
A: series

Q: To increase current, PV modules are connected in
- parallel
- series
A: parallel

Q: The operating point of a PV array is the voltage and current where
- power delivered is maximum
- power delivered is minimum
- load curve intersects the I-V curve
- slope of the load curve is minimum
A: load curve intersects the I-V curve

Q: The DC output of a solar array varies with
- time of day
- time of year
- weather conditions
- all of the above
A: all of the above