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Worksheets141 S18-19
Total questions: 25
Worksheet time: 50mins
Name
Class
Date
1.
Some key applications areas of solar panels include …..
a)
power stations,
b)
rooftop systems
c)
Concentrated PV and vehicles.
d)
All of the choices
e)
rooftop systems
2.
A solar park, is a large-scale photovoltaic system (PV system), designed for the supply of power into the __________.
a)
Roof top
b)
electricity grid
c)
Automobile
d)
None of the choices
e)
Automobile
3.
Photovoltaic power stations are different from most building-mounted solar power applications because they supply power at the level and not to local users.
a)
Appliance
b)
Building
c)
Utility
d)
Station
e)
Building
4.
What power capacity do rooftop PV systems on residential buildings typically have?
a)
5-20 kW
b)
25-50 kW
c)
50-75 kW
d)
100 kW
e)
25-50 kW
5.
What does CPV stand for?
a)
Converter Photovoltaic
b)
Current Photovoltaic
c)
Concentrated Photovoltaic
d)
Capacitance Photovoltaic
e)
Current Photovoltaic
6.
The term usually implies that solar energy is used to power all or part of a vehicle's propulsion.
a)
Electric vehicle
b)
Hybrid vehicle
c)
Solar vehicle
d)
All of the above
e)
Hybrid vehicle
7.
What do spacecraft use solar power for?
a)
For propulsion systems
b)
To run sensors
c)
For telemetry
d)
All of the above
e)
To run sensors
8.
Solar energy is also called energy.
a)
Light
b)
Electrical
c)
Photovoltaic
d)
Wave
e)
Electrical
9.
A solar panel is made of number of photovoltaic .
a)
Effect
b)
Cells
c)
Batteries
d)
Components
e)
Components
10.
A PV system includes an to change electricity from DC to AC.
a)
Converter
b)
Inverter
c)
DC isolator
d)
AC isolator
e)
AC isolator
11.
Generation of electricity using solar energy depends on the photovoltaic .
a)
Effect
b)
Cells
c)
Batteries
d)
Components
e)
Cells
12.
A UPS is typically used to protect hardware such as:
a)
Computers
b)
Data centers (an example shown below)
c)
Telecommunication equipment
d)
All the choices
13.
A UPS differs from an auxiliary or emergency power system or standby generator as it provides near-instantaneous protection from input power interruptions. It does this by supplying energy stored in_____________, super capacitors, or flywheels.
a)
Batteries
b)
Transformer
c)
Motors
d)
All of the choices
14.
What else do most UPS do in addition to providing protection from loss of power supply?
a)
More voltage
b)
Surge protection
c)
Variable voltage
d)
High voltage
15.
_______________ the load is powered directly by the input power and the backup power circuitry is only used when the supply power fails. Most UPS below 1 kVA are of the line-interactive or standby type and are usually less expensive.
a)
Standby (off-line) UPS system
b)
Line-interactive UPS
c)
On-line UPS
d)
Dynamic uninterruptible power supplies (DUPS)
16.
________________maintains the inverter in line and redirects the battery’s DC current path from the normal charging mode to supplying current when power is lost.
a)
Standby (off-line) UPS system
b)
Line-interactive UPS
c)
On-line UPS
d)
Dynamic uninterruptible power supplies (DUPS)
17.
_______________- takes AC input, rectifying to DC for passing through the rechargeable battery, then inverting back to 120V/240V AC for powering the protected equipment.
a)
Standby (off-line) UPS system
b)
Line-interactive UPS
c)
On-line UPS
d)
Dynamic uninterruptible power supplies (DUPS)
18.
For large power units, ________________________are often used.
a)
Standby (off-line) UPS system
b)
Line-interactive UPS
c)
On-line UPS
d)
Dynamic uninterruptible power supplies (DUPS)
19.
There are primarily __________kinds of batteries used in UPSs.
a)
five
b)
three
c)
four
d)
two
20.
________________________, also known as sealed or maintenance-free.
a)
Valve-regulated lead-acid (VRLA)
b)
Wet-cell
c)
Flooded-cell
d)
Dry-cell
21.
______________ (also called flooded-cell).
a)
Valve-regulated lead-acid (VRLA)
b)
Wet-cell
c)
Flooded-cell
d)
Dry-cell
22.
___________ are sealed, usually within polypropylene plastic. They have the advantage of containing no liquid that might leak or drip out when inverted or handled roughly.
a)
Valve-regulated lead-acid (VRLA)
b)
Wet-cell
c)
Flooded-cell
d)
Dry-cell
23.
VRLA batteries usually have lower up-front costs but have a ___________than wet-cell, usually around five years.
a)
Shorter lifetime
b)
Longer lifetime
c)
Medium lifetime
d)
No lifetime
24.
Wet-cell/flooded-cell batteries have thick lead-based plates that are flooded with an acid electrolyte. Failures normally don’t occur until halfway through their _________pro-rated life.
a)
20-year
b)
10-year
c)
5-year
d)
30-year
25.
Wet-cells require ___________and a space-consuming separate battery room to use. Wet-cell batteries also require more advanced maintenance.
a)
more safety measures
b)
less safety measures
c)
same safety measures
d)
No safety measures
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