At 40 °N latitude (p) Determine (i) (ii) (iii) The direct normal extra-terrestrial irradiance (Io) at equinox Solar declination angle (8) at equinox the sunrise time, sun set time and day length (a) at Equinox (b) at Summer Solstice (c) at Winter Solstice Following equations are given with their usual notations. Io = Isc [1 + 0.034 cos (360N/365)] where Isc=1353w/m², 8 = 23.45 sin [360 (284+N)/365] where N is the day number from January 01 -1 Wss = cos -¹ [-tan o tan 8] Sun rise time (Tsr) = 12 -Wss X1/15) hrs Sun set time (Tss) = 12+wss x1/15) hrs Day length (Ta) = Wss X 2/15 hrs

EBK ELECTRICAL WIRING RESIDENTIAL
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Chapter25: Television, Telephone, And Low-voltage Signal Systems
Section25.1: Television Circuit
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At 40 °N latitude (p)
Determine
(i)
(ii)
(iii)
The direct normal extra-terrestrial irradiance (Io) at equinox
Solar declination angle (8) at equinox
the sunrise time, sun set time and day length
(a) at Equinox
(b) at Summer Solstice
(c) at Winter Solstice
Following equations are given with their usual notations.
Io = Isc [1 + 0.034 cos (360N/365)] where Isc=1353w/m²,
8 = 23.45 sin [360 (284+N)/365] where N is the day number from January 01
-1
Wss = cos -¹ [-tan o tan 8]
Sun rise time (Tr) = 12 -Wss x1/15) hrs
Sun set time (TSS) = 12+wss x1/15) hrs
Day length (Ta) = Wss X 2/15 hrs
Transcribed Image Text:At 40 °N latitude (p) Determine (i) (ii) (iii) The direct normal extra-terrestrial irradiance (Io) at equinox Solar declination angle (8) at equinox the sunrise time, sun set time and day length (a) at Equinox (b) at Summer Solstice (c) at Winter Solstice Following equations are given with their usual notations. Io = Isc [1 + 0.034 cos (360N/365)] where Isc=1353w/m², 8 = 23.45 sin [360 (284+N)/365] where N is the day number from January 01 -1 Wss = cos -¹ [-tan o tan 8] Sun rise time (Tr) = 12 -Wss x1/15) hrs Sun set time (TSS) = 12+wss x1/15) hrs Day length (Ta) = Wss X 2/15 hrs
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