The most convenient co-ordinate system for specifying the relative positions of heavenly bodies on the celestial sphere, is
Options
A. altitude and azimuth system
B. declination and hour angle system
C. declination and right ascension system
D. declination and altitude system
E. azimuth and declination system.
Correct Answer
declination and right ascension system
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1. At the same mean velocity, the ratio of head loss per unit length for a sewer pipe flowing full to that for the same pipe flowing half full would be :