Questions and answers for exam Preparation

MCQs

Total Questions : 175 | Page 4 of 18 pages

Question 31. What is solar noon?

Time of the day at which sun’s rays are perpendicular to a given line of longitude
Time of the day at which sun’s rays are parallel to a given line of longitude
Time of the day at which sun’s rays are perpendicular earth’s surface
Time of the day at which sun’s rays are parallel to earth’s surface

Discuss Question

Answer: Option A. -> Time of the day at which sun’s rays are perpendicular to a given line of longitude
Answer: (a).Time of the day at which sun’s rays are perpendicular to a given line of longitude

Question 32. What is a sidereal day?

Time taken by earth to rotate about its axis for distant stars to appear fixed
Time taken by earth to rotate about its axis for sun to appear fixed
Time taken by earth to rotate about its axis for distant stars to be moved by 1 degree
Time taken by earth to rotate about its axis for distant stars to be moved by 0.5 degrees

Discuss Question

Answer: Option A. -> Time taken by earth to rotate about its axis for distant stars to appear fixed
Answer: (a).Time taken by earth to rotate about its axis for distant stars to appear fixed

Question 33. How does the solar noon vary with every 15 degrees of longitude west of a given longitude?

Solar noon occurs one hour later with every 15 degrees of longitude west of a given longitude
Solar noon occurs one hour earlier with every 15 degrees of longitude east of a given longitude
Solar noon occurs one hour later with every 15 degrees of longitude west of a given longitude
Solar noon occurs half hour later with every 15 degrees of longitude west of a given longitude

Discuss Question

Answer: Option C. -> Solar noon occurs one hour later with every 15 degrees of longitude west of a given longitude
Answer: (c).Solar noon occurs one hour later with every 15 degrees of longitude west of a given longitude

Question 34. How does the solar noon vary with every 15 degrees of longitude east of a given longitude?

Solar noon occurs one hour late with every 15 degrees of longitude east of a given longitude
Solar noon occurs one hour earlier with every 15 degrees of longitude east of a given longitude
Solar noon occurs does not vary with longitude
Solar noon occurs half hour late with every 15 degrees of longitude east of a given longitude

Discuss Question

Answer: Option B. -> Solar noon occurs one hour earlier with every 15 degrees of longitude east of a given longitude
Answer: (b).Solar noon occurs one hour earlier with every 15 degrees of longitude east of a given longitude

Question 35. What is a solar day?

One complete revolution of sun around moon
One complete revolution of earth around sun
One complete revolution of moon around earth
One complete revolution of sun around earth

Discuss Question

Answer: Option D. -> One complete revolution of sun around earth
Answer: (d).One complete revolution of sun around earth

Question 36. How do decomposition models compute diffuse solar radiation?

From specific information of environmental conditions
From measuring instruments
From global solar radiation data
From ASHRAE model

Discuss Question

Answer: Option C. -> From global solar radiation data
Answer: (c).From global solar radiation data

Question 37. Which of the following does the correlation of decomposition models (between diffuse and total radiation on horizontal surface) depend on?