Student’s Name:
Date: June 5, 2013
ESCI-61, Introduction to Photovoltaic Systems
Quiz 2
Important Note : Unless otherwise indicated, each of the following questions has only one good
answer, so please circle only one answer for each question; if you think there are more than one
good answer, please circle the one you think is the best.
1)
In the northern hemisphere, and in general, the best orientation for a PV array is
A – North
B – East
C – South
D – West
2)
Sun Irradiance is a measure of
A – Intensity of the solar power (W/m2)
B – Total amount of solar energy accumulated on an area over time (Wh/m2)
C – all of the above
D – None of the above
3)
Sun Irradiation
A - Intensity of the solar power (W/m2)
B - Total amount of solar energy accumulated on an area over time (Wh/m2)
C - all of the above
D - None of the above
4)
PVWatts Calculator is
A – an online tool to do an energy audit for a residential customer
B – an electronic tool to measure energy usage of electric appliances used by a residential
customer
C – an online tool that estimates the energy production of a hypothetical grid-connected PV System
D – All of the above
E – None of the above
5) An I-V Curve is
A - a plot of the full range of current and voltage output from a PV cell. This is not applicable to
other PV devices such as a module or an array
B - a plot of the full range of current and voltage output from a PV module. This is not applicable
to other PV devices such as a cell or an array
C - a plot of the full range of current and voltage output from a PV array. This is not applicable to
other PV devices such as a cell or a module
D - a plot of the full range of current and voltage output from a PV device such as a cell, module
or array
6)
The Solmetric SunEye is a shade measurement tool for solar site assessment. This hand-held
electronic tool assesses
A - the available non-shaded roof area of a particular site.
B - the size of a PV array to be installed on a particular roof
C - the available solar energy by day, month, and year by measuring the shading patterns of a
particular site.
D - All of the above
E - None of the above
7) Please circle 2 answers
The Solmetric SunEye can be used
A – on sunny days only
B – on sunny and cloudy days
C – during the day only
D – during the day and at night, if you have a flashlight
8)
In order to determine the roof azimuth of a particular site, one can
A - go onsite and use a compass
B - get the site address and use an online tool such as the Solmetric Roof Azimuth Tool
C - All of the above
D - None of the above
9) See Appendix A
According the table in Appendix A, the optimal tilt angle for a PV array to maximize the average
amount of energy that can be collected during summer months (May-October, inclusive) is
closest to :
A – 0 degree
B – 18 degrees
C – 33 degrees
D – 48 degrees
E – 90 degrees
10) See Appendix A
According to the table in Appendix A, a PV flat plate collector installed facing south at a fixed
tilt of 48 degrees is expected to produce on average more electricity in winter months (NovApr, inclusive) than in summer months (May-October, inclusive).
A – True
B – False
Please explain briefly your answer; points are not accounted if there is no explanation
Appendix A