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71
Longitudes are measured from 0° to
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Answer: Option C
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72
If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer then the hour angle of the star at elongation is given by
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Answer: Option B
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73
If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer, then the azimuth of the star at elongation is given by
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Answer: Option A
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74
The altitude of a circumpolar star is maximum when it is
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Answer: Option B
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75
Rotation of the camera at exposure about its vertical axis, is known as
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Answer: Option A
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76
The angle between the observer's meridian and declination circle of a heavenly body, is known as
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Answer: Option A
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77
A metallic tape is made of
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Answer: Option D
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78
If S is the sum of three angles of a spherical triangle, the spherical excess equals
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Answer: Option B
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79
The suitable contour interval for a map with scale 1 : 10000 is
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Answer: Option A
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80
Which of the following methods of plane table surveying is used to locate the position of an inaccessible point ?
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Answer: Option B
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