WorksheetsDay 65-Nov 28-worksheet-Diploma-Leveling part 1
Total questions: 15
Worksheet time: 10mins
Which of the following defines the Horizontal Plane?
Plane perpendicular to level surface
Plane tangential to level surface at a point
Plane parallel to plumb line
Plane containing two vertical lines
A line lying in a level surface and perpendicular to plumb line at all points is called:
Horizontal line
Vertical line
Level line
Line of collimation
Line of collimation connects:
Objective lens to diaphragm
Crosshair intersection to optical centre of objective
Eyepiece to object
Bubble axis to vertical axis
Which staff reading is taken on a point of known elevation?
Foresight
Intermediate sight
Height sight
Backsight
Which level cannot rotate in vertical plane?
Wye level
Cooke’s reversible level
Dumpy level
Cushing’s level
Elimination of parallax is achieved by correctly focusing:
Bubble tube only
Eyepiece and objective both
Eyepiece only
Objective only
Vertical line always passes through the centre of the Earth.
True
False
Intermediate sight is the last reading taken before the instrument is shifted.
True
False
The vertical distance of a point above or below the datum is called (a) .
H.I is calculated as RL of benchmark plus (a) .
A temporary line used for daily continuation of levelling work is called (a) .
The diaphragm holds the (a) used to take staff readings.
The foot screws form part of the _______ of a level.
levelling head
tripod legs
telescope
staff clamp
The vertical distance between the bottom and top stadia hairs is known as the (a) .
The operation of reading the staff without altering the position of the instrument is called taking a _______.
sight
traverse
offset
orientation
