MP Sub Engineer_CE Surveying Quiz-5

Correction of length due to reduction to mean sea level is _________.

A line of true length 398 m when measured by a chain of 20 m chain is recorded to be 400 m. What is the actual length of the chain (in m)?

A plan represents a rectangular area of 61965 m² and measures 8.5 cm by 10 cm. What is the scale of the map?

A line PQ measures 12 cm on a photograph taken with a camera of focal length 22.5 cm. The same line measures 4 cm on a map drawn to scale of 1:35000. If average attitude is 300 m then what is the flying height of the aircraft?

The multiplying constant of a tacheometer is

A road section of length 1 km scales 8 cm on a vertical photograph. The focal length of the camera is 20 m, the scale of length of camera is 160 mm. If the terrain is fairly level, then the flying height will be

A vertical photograph is taken at an altitude of 1200 m above mean sea level of a terrain lying at a elevation of 80m. The local focal length of camera is 15 cm. The scale of the photograph will be nearly