Solar Panels MCQ [Free PDF] – Objective Question Answer for Solar Panels MCQ Quiz

1. A solar cell converts light energy into __________

A. Electrical energy
B. Thermal energy
C. Sound energy
D. Heat energy

Answer: A

A solar cell converts light energy into electrical energy. The light energy excites the electron of the solar cell which further flows in the circuit and constitutes the electric current.   

 

2. There are three types of solar cells.

A. True
B. False

Answer: A

There are three types of solar cells. Single crystal, polycrystal, and amorphous silicon cells are the major types of solar cells.   

 

3. Series and parallel combination of the solar cell is known as _________

A. Solar array
B. Solar light
C. Solar sight
D. Solar eye

Answer: A

Series and parallel combination of the solar cell is known as the Solar array. Shunt diodes are used to avoid the circulating current.   

 

4. Full form of FF in the solar field is ____________

A. Form factor
B. Fill factor
C. Face factor
D. Fire factor

Answer: B

FF stands for Fill factor. It is the ratio of the maximum obtainable power to the product of the open-circuit voltage and short circuit current.   

 

5. Calculate the Fill factor using the data: Pmax=15 W, Voc=18 V, Isc=4 A.

A. .65
B. .59
C. .20
D. .98

Answer: C

The fill factor is the ratio of the maximum obtainable power to the product of the open-circuit voltage and short circuit current.

F.F=Pmax÷(Voc×Isc)=15/72=.20.   

 

6. Permanent magnet DC motor is more expensive than an Induction motor.

A. True
B. False

Answer: A

A permanent magnet DC motor is more expensive than an Induction motor because of the magnetic used in it. Magnets are made up of ferromagnetic material which results in high cost.   

 

7. Calculate the line voltage in star connection when phase voltage=311 V.

A. 548.29 V
B. 538.66 V
C. 587.28 V
D. 185.58 V

Answer: B

The line voltage in the case of star connection is 1.73 times of phase voltage. It leads the phase voltage by an angle of 30°.

VL-L = 1.73×311 = 538.66 V.   

 

8. The slope of the V-I curve of a solar cell is 66.1°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line.

A. 3.5 Ω
B. 2.2 Ω
C. 2.5 Ω
D. 2.9 Ω

Answer: B

The slope of the V-I curve of a solar cell is resistance. The slope given is 66.1° so

R=tan(66.1°)=2.2 Ω.

The slope of the I-V curve is reciprocal to resistance.   

 

9. SCIM has a _________

A. Shorter life
B. Medium life
C. Longer life
D. Infinite life

Answer: C

SCIM stands for squirrel cage induction motor. It has high efficiency, maintenance-free operation, and long life because of its rigid nature.   

 

10. The power factor of a SCIM generally is ___________

A. .1-.2
B. .6-.8
C. .3-.4
D. .5-.7

Answer: B

At light loads, the current drawn is largely a magnetizing current due to the air gap and hence the power factor is low. The power factor of a SCIM generally is .6-.8.   

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