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7 Exercise

This document contains 5 questions regarding calculating the amplitude of the sun at different locations and times of day. It provides details like local mean time, latitude, declination, and calculated values for true amplitude, true azimuth, computed azimuth, error, variation, and deviation. The questions involve using the formula for amplitude (sin(declination) x sec(latitude)) to determine the angle of the sun above or below the horizon at sunrise/sunset.

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Jayesh Solaskar
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173 views6 pages

7 Exercise

This document contains 5 questions regarding calculating the amplitude of the sun at different locations and times of day. It provides details like local mean time, latitude, declination, and calculated values for true amplitude, true azimuth, computed azimuth, error, variation, and deviation. The questions involve using the formula for amplitude (sin(declination) x sec(latitude)) to determine the angle of the sun above or below the horizon at sunrise/sunset.

Uploaded by

Jayesh Solaskar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Exercise -7 (Amplitude - Sun)

Q.1)

LMT Sunrise = 2d 05h 27m 00s

LIT (E) = (-) 04h 17m 20s

GMT Sunrise = 2d 01h 09m 40s

GMT: 2d 01h 09m 40s

Dec = 753.3 N Sin Amp = Sin Dec x Sec Lat

d (0.9) =(-) 0.1 = sin 753.1 x


sec 4028

Dec = 7 53.1 N Amp =E 10.4 N

Lat = 4028N

T.Amp : E 10.4 N

T. Az : 079.6

C. Az :090(C)

Error : 10.4 W

Variation: 5 W

Deviation: 5.4 W
Q.2)

LMT Sunset = 1d 18h 37m 00s

LIT (W) =(+) 11h 59m 00s

GMT Sunset = 2d 06h 36m 00s

GMT: 02d 06h 36m 00s

Dec = 15 27.8 N Sin Amp = Sin Dec x Sec


Lat

d (0.8) =(-) 0.5 = sin 15 28,3 x


sec 30

Dec = 15 28.3 N = 0.308

Lat = 30 06 N Amp = W 17.9 N

T.Amp : W 17.9 N

T. Az : 287.9

C. Az : 285

Error : 2.9 E

Variation: 2W

Deviation: 4.9 E
Q.3)

LMT Sunset = 20d 20h 21m 00s

LIT (W) = (+) 03h 05m 48s

GMT Sunset = 20d 23h 26m 48s

GMT: 20d 23h 26m 48s

Dec = 20 07.2 S Sin Amp = Sin Dec x Sec Lat

d (0.5) = (-) 0.2 = sin 2007 x sec


5420

Dec = 20 07.0 = 0.3439 x 1.7150

Lat = 54 20 S Amp = W 36.14S

T.Amp : W 36.14S

T. Az : 234 (T)

C. Az : 234 (C)

Error : NIL

Variation: 3 W

Deviation: 3 W
Q.4)

D H M S OR D H
M S
CHRON 30d 00h 10m 00s 30d 12h 10m
00s
ERROR (+) 05m 10s (+)
05m 10s
GMT 30d 00h 15m 10s 30d 12h 15m 10s
LIT(E) (+) 07h 20m 48s 07h 20m 48s
LMT 30d 07h 35m 58s 30d 19h 35m 58s

GMT: 30d 00h 15m 10s

Dec = 21 38.9 S Sin Amp = Sin Dec x Sec


Lat

d (0.4) = (+) 0.1 = sin 21 38.9 x


sec 49 18

Dec = 21 39 S Amp = 34.4

Lat = 49 18 N

T.Amp : E 34.4 S

T. Az : 124.4 (T)

C. Az : 110 (C)

Error : 14.4 E

Variation: 10 E

Deviation: 4.4 E
Q.5)

D H M S OR D H
M S
CHRON 01h 54m 00s 13h 54m 00s
ERROR (F) (-) 03m 12s 03m 12s
GMT 24d 01h 50m 48s 23d 13h 50m
48s
LIT(W) (-) 08h 01m 48s 08h 01m 48s
LMT 23d 17h 49m 00s 23d 05h 49m 00s

GMT: Sept 23rd 13h 50m 48s

Dec = 0 17.8S Sin Amp = Sin Dec x Sec Lat

d (1.0) = (-) 0.8 = sin 018.6 x


sec 0000

Dec = 0 18.6 S Amp = 018.6 or 0.3

Lat = 00 00

T.Amp : E 0.3 S

T. Az : 90.3

C. Az : 094

Error : 3.7 W

Variation: 2.7 W

Deviation: 1 W

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