No. ofPages: 2

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
SECOND SEMESTER M. TECH DEGREE EXAMINATION, APRIL/MAY 201 8

Branch: Electrical & Electronics Engineering
Elective I

Stream (s)

1. Power Systems
2. Guidance & Navigational Control
3. Power control and Drives
4. Control Systems
5. Electrical Machines

6. Power System and Control

OIEE6412 New And Renewable Sources Of Energy

Answer any twofull questions from each part Limit
answers to the required points.

Duration: 3 hours

Max. Marks: 60
PART A
a. What are the reasons for variations in solar radiation reaching the earth? 3
Differentiate between beam radiation, diffuse radiation and total radiation.
b. What are the characteristics ofthe solar spectrum? Which part is known 3 as the
visible spectrum?
c. Differentiate between solar insolation and irradiance. 3
2 a. Explain any one instrument used for measuring total solar radiation. 3
b. Determine the average value ofsolar radiation on a horizontal surface for 3
June 22, at the latitude of 10 °N, ifconstants a and b are given as equal to
0.30 and 0.51 respectively, and the ratio rv'N = 0.55.
c. What are the main parts ofa flat plate solar collector? Explain the 3 function of each.
3. a. Explain the different types of solar cookers. 4.5
4.5

b. Explain the principle of solar photovoltaic power generation?

What are the main elements of a PV system?