chain surveying

The longest survey line?

• Tie line

• Base line

• Check line

• None of the above

A traingle having less than 30° and greater than 120° is known as

• Ill conditioned traingle

• Isosceles triangle

• Well condition triangle

• None of the above

Which of the following is non metric chain?

• Engineer's chain

• Band chain

• Both a and b

• None of these

An obstacle which obstructs vision but not chaining

• Vegetation

• Marshy land

• Both a and b

• None of the above

In a prism square the angle between reflecting faces is

• 180°

• 45°

• 60°

• 90°

The working principle of optical square is based on

• Double retraction

• Retraction

• Reflection

• Double reflection

Which of the following is more accurate

• Engineer's chain

• Revenue chain

• Band chain

• Both a and b

Tie line offset is........

• When angle offset is 90

• Oblique offset

• When angle is other than 90

• Both b and c

Optical square angle between index sight and horizon is

• 90°

• 45

• 180

• 45 or 90

Invar tape alloy content is

• Steel 64% nickel 35%

• Steel 64% Nickel 36

• Steel 65 Nickel 35

• Steel 65 Nickel 36