Test: Tides, Triangulation, Astronomy & Photogrammetric Surveying - 2 - Civil Engineering (CE) MCQ

A star may culminate at zenith if its declination is

A star has a declination of 55°N its upper culmination is in the zenith of the place. The altitude of the lower culmination is

A vertical photograph was taken from an aircraft flying at an altitude of 2000 m above mean sea level. The focal length of the camera is 175 mm. The scale of the photograph for a hill of an elevation of 250 m is

In an aerial photograph, if the photograph has a tilt of 3° and the focal length is 100 mm, then the distance between the perspective centre and the plumb point will be

In an aerial photograph, if the photograph has a tiit of 4° and the focal length is 200 mm, then the distance between, the principal point and plumb point will be

An aircraft is flying at a ground speed of 200 km/h. The focal length of the camera is 200 mm. The ground distance covered is 200 mm. The ground distance covered along the flight line between exposures is 2 km. The time interval between exposures is given by

Which one of the following surveys is required in observations of stars?