TACHEOMETRIC SURVEYING 14/5/20

If the ground is undulating, rough, difficult and inaccessible. Under these circumstances _________ methods are used to obtain distances

• Direct methods
• Indirect methods
• Chain surveying
• Tacheometry

Using tacheometric methods, elevations can also be determined.

• true
• false

Tacheometer has ______ number of horizontal hairs

• 2
• 3
• 4
• 1

The value of multiplying constant is generally taken as _________

• 60
• 80
• 100
• 90

Stadia method can also be known as __________

• Fixed hair method
• Movable hair method
• Subtense method
• Tangential method

Which among the following represents staff interval factor?

• f + d
• f – d
• f / i
• i/ f

Usage of anallactic lens makes the entire process more simple and reliable.

• true
• false

A tacheometer is setup at A and the readings on the staff at B are 1.77m, 2.12m, 2.34m and the inclination of line of sight is + 10 9ꞌ. Calculate the vertical distance between A and B. Take k = 100, c = 0.3?

• 1.51 m
• 2.51 m
• 2.15 m
• 1.15 m

in movable hair method value of stadia intercept is constant.

• ture
• false

advantages of tacheometric surveying is

• saves time & money
• used for the hydrographic survey
• used where chaining is difficult
• all the given