# Civil Engineering - Advanced Surveying

### Exercise :: Advanced Surveying - Section 1

11.

The most convenient co-ordinate system for specifying the relative positions of heavenly bodies on the celestial sphere, is

 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.

Explanation:

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12.

In a tropical year, the number of sidereal days, are

 A. 365 B. 365.2224 C. 365.2422 D. 366.2422 E. 366.2224.

Explanation:

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13.

Pick up the correct statement from the following :

 A. Sidereal time at any instant is equal to the hour angle of the first point of Aries B. Local sidereal time of any place is equal to the right ascension of its meridian C. Sidereal time is equal to the right ascension of a star at its upper transit D. All the above.

Explanation:

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14.

Polaris is usually observed for the determination of the azimuth when it is

 A. at culmination B. at elongation C. neither at culmination nor at elongation D. either at culmination or at elongation.

Explanation:

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15.

The latitude (λ) of a place and the altitude (α) of the pole are related by

 A. λ = α B. λ = 90° - α C. λ = α - 90° D. λ = 180° - α.