Solar Photovoltaic System
1.For satellite the source of energy is........
A.Cryogenic storage
B.Battery
C.Solar cell
D.Any of the above
Answer: C.
2.The output of solar cell is of the order of….....
A.1W
B.5 W
C.10 W
D.20 W
Answer: A.
3.Most widely used solar material is….....
A.Arsenic
B.Cadmium
C.Silicon
D.Steel
Answer: C.
4.Photovoltaic cell or solar cell converts........
A.Thermal energy into electricity
B.Electromagnetic radiation directly into electricity
C.Solar radiation into thermal energy
D.Solar radiation into kinetic energy
Answer: B.
5.The voltage of a single solar cell is…....
A.0.2 v
B.0.5 v
C.1.0 v
D.2.0 v
Answer: C.
6.The term photo voltaic comes from
A.Spanish
B.Greek
C.German
D.English
Answer:B
7.When the source of light is not sun light then the photo voltaic cell is used as
A.Photo diode
B.Photo voltaic cell
C.Photo detector
D.Photo transmitter
Answer: C
8.......is one of the most important materials is also known as solar grade silicon.
A.Crushed silicon
B.Crystalline silicon
C.Powdered silicon
D.Silicon
Answer:B
9.......photo voltaic devices in the form of thin films.
A.Cadmium Telluroide
B.Cadmium oxide
C.Cadmium sulphide
D.Cadmium sulphate
Answer: A
10.A module in a solar panel refers to
A.Series arrangement of solar cells.
B.Parallel arrangement of solar cells.
C.Series and parallel arrangement of solar cells.
D.None of the above.
ANSWER: C. Series and parallel arrangement of solar cells.
11.The efficiency of the solar cell is about
A.25 %
B.15 %
C.40 %
D.60 %
ANSWER: B.
12.What is the maximum possible output of a solar array?
A.300 W/m2
B.100 W/m2
C.250 W/m2
D.500 W/m2
ANSWER: c. 250 W/m2
13.In solar thermal conversion systems the solar heat is transferred to
A.water-steam
B.liquid metals
C.molten salts
D.any of the above.
Answer –D.
14.The current density of a photo voltaic cell ranges from
A. 10 – 20 mA/cm2
B. 40 – 50 mA/cm2
C. 20 – 40 mA/cm2
D. 60 – 100 mA/cm2
ANSWER: B.
15.Which of the following area is preferred for solar thermal electric plants ?
A.mountain tops
B.hot arid zones
C.coastal areas
D.high rainfall zones.
ANSWER – B
16.Batteries used for electrical energy storage are
A.Laclanche cells
B.Edison cells
C.Lead acid cells
D.Any of the above.
ANSWER – C.
17.Turn around efficiency of battery energy storage system is around
A.75 percent
B.50 percent
C.25 percent
D.10 percent.
ANSWER – A.
18.Certain metals become super-conducting when cooled below
A.melting point
B.transition temperature
C.00 K
D.00 C
ANSWER – B.
19.Identify the adjacent figure
A.solar cell
B.solar module
C.solar array
D.none of the above
Answer- A.
20.Identify the adjacent figure
A.solar cell
B.solar module
C.solar array
D.none of the above
Answer- B.
21.Identify the adjacent figure
A.solar cell
B.solar module
C.solar array
D.none of the above
Answer- C.
22.Solar cells are made up of
A.Semiconductor
B.Conductors
C.Insulators
D.All of the above
Answer- A.
23.P-type semiconductor has:
A.Pentavalent impurity
B.Trivalent impurity
C.Divalent Impurity
D.None of the above
Answer - B.
24.N-type semiconductor has:
A.Pentavalent impurity
B.Trivalent impurity
C.Divalent Impurity
D.None of the above
Answer- A.
25.The process of adding impurity to silicon is known as
A.Doping
B.Imparting
C.Bombarding
D.Injecting
Answer- A.
26.Identify the adjacent module configuration.
A.Monocrystalline
B.Polycrystalline
C.Thin film
D.Any other
Answer- A.
27.Identify the adjacent module configuration.
A.Monocrystalline
B.Polycrystalline
C.Thin film
D.Any other
Answer- A.
28.Identify the adjacent module configuration.
A.Monocrystalline
B.Polycrystalline
C.Thin film
D.Any other
Answer- C.
29.What is function of inverter?
A.Conversion of AC to DC
B.Conversion of DC to AC
C.Amplifying the sound
D.Step up the voltage
Answer- B.
30.What is MPPT?
A.Maximum Photo Power Tracer
B.Maximum Power Point Tracer
C.Multi Point Power Tracer
D.None of the above
Answer - B.
31.What is the smallest unit of solar photovoltaic system
A.Solar Cell
B.Solar Array
C.Solar module
D.Solar panel
Answer - A. Solar Cell
32.In P-N Junction solar cell, P-type semiconductor is connected to
A.Cathode
B.Anode
C.triode
D.Diode
Answer- B. Anode
33.In P-N Junction solar cell, N-type semiconductor is connected to
A.Cathode
B.Anode
C.triode
D.Diode
Answer- A. Cathode
34.In P-type semiconductor are the majority carriers.
A.Holes
B.Elelctrons
C.Neutrons
D.All of the above
Answer - A. Holes
35.In N-type semiconductor are the majority carriers.
A.Holes
B.Elelctrons
C.Neutrons
D.All of the above
Answer - B. Elelctrons
36.What does the word photovoltaic mean?
A.Sun - Powered
B.Light - Cell
C.Light – Electricity
D.Solar – Energy
Answer - C. Light – Electricity
37.What are the most common photovoltaic cells used today?
A.Organic Cells
B.Polymer Cells
C.Plastic Cells
D.Crystalline Silicon Cell
Answer - D. Crystalline Silicon Cell
Explanation - Unveiled by Bell Labs in 1954, silicon cells were the very first successful photovoltaic (PV) technology, and they remain the most common PV cells in use today.
38.Which of the following is not a equipment used in solar photovoltaic system?
A.Battery
B.MPPT
C.Inverter
D.Transformer
Answer – D. Transformer
39.Which batteries are used in solar photovoltaic system?
A.Lead Acid
B.Lithium
C.Saltwater
D.All of the above
Answer - D. All of the above
40.Fill factor of solar cell is always
A.Greater then 1
B.Less than 1
C.Equal to 1
D.Any of the above
Answer - B. Less than 1
41.Full sunlight is falling on a 20% efficiency solar cell of area 2 m2 at an angle of incidence of 60 degrees to the normal to the cell. What is the output power of the cell?
A.100 W
B.150 W
C.200 W
D.400W
Answer – 200 W
Explanation - The projected area of the cell normal to the direction of the sunlight is 2xcos60 = 1 m2. The cell's efficiency is 20% and full sunlight has an intensity of ~ 1000 W m-2, so the output power is 0.2x1000x1 = 200 W.
42.A photocell has a short circuit current of 25 mA, an open circuit voltage of 0.6 V and a maximum power output of 12 mW. What is its fill factor?
A. 50%
B. 65%
C. 80%
D. 95%
Answer – C. 80%
Explanation -Relation is FF = P/ISCVOC
43.Which of these are not the positive effects of using solar energy?
A.It harms the environment
B.It increases home safety
C.It stabilizes economy
D.It reduces pollution
Answer - A. It harms the environment
44.Which of the following should not be the characteristic of the solar cell material?
A.High Absorption
B.High Conductivity
C.High Energy Band
D.High Availability
Answer - C. High Energy Band
Explanation: The Energy Band of the semiconductor should not be too high. It should be around 1.5 eV so that the incident solar radiation can cause the generation of e-h pairs.
