Engineering :: Renewable Sources of Energy
41.
The sum of the solar altitude angle and the solar zenith angle is
Answer: Option A
Explanation:
42.
Which of the following angles is aero at solar noon?
A.
Solar altitude angle
B.
Solar zenith angle
C.
Hour angle
D.
Latitude angle
Answer: Option C
Explanation:
43.
Which of the following angles is aero at solar sunset?
A.
Latitude angle
B.
Hour angle
C.
Solar zenith angle
D.
Solar altitude angle
Answer: Option D
Explanation:
44.
At solar noon on the equinoxes the solar zenith angle is equal to
A.
the latitude angle
B.
the hour angle
C.
the solar altitude angle
D.
none of the above
Answer: Option A
Explanation:
45.
The hour angle is an angular measure of time and is equivalent to
A.
5? per hour
B.
10? per hour
C.
15? per hour
D.
30? per hour
Answer: Option C
Explanation:
46.
The hour angle is
A.
measured from noon based on the local apparent time
B.
positive in the forenoon
C.
negative in the afternoon
D.
all of the above
Answer: Option D
Explanation:
47.
At 1400 h (local apparent time) the hour angle is
Answer: Option B
Explanation:
48.
At 0900 h (local apparent time) the hour angle is
Answer: Option B
Explanation:
49.
Suppose that the transmissivity is zero for a very thick piece of material. If the material is perfectly black where ? = absorptivity and ? = reflectivity
Answer: Option D
Explanation:
50.
Suppose that the transmissivity is zero for a very thick piece of material. If the material is perfectly white where ? = absorptivity and ? = reflectivity
Answer: Option A
Explanation:
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