Select the incorrect statement.
a) The true meridians at different places are parallel to each other. b) The true meridian at any place is […]
Select the incorrect statement. Read Post »
a) The true meridians at different places are parallel to each other. b) The true meridian at any place is […]
Select the incorrect statement. Read Post »
a) on its outer spindle with a relative motion between the vernier and graduated scale of lower plate b) on
a) concave b) convex c) plano-convex d) plano-concave Ans: a
In an internal focussing type of telescope, the lens provided is Read Post »
a) is lighter than chain b) is easier to handle c) is practically inextensible and is not liable to kinks
a) transiting b) reversing c) plunging d) swinging Ans: d
a) foresight only b) backsight only c) foresight and backsight d) foresight and intermediate sight Ans: c
The following sights are taken on a “turning point” Read Post »
a) ±2 mm b) ±3 mm c) ±5 mm d) ±8 mm Ans: c
The maximum tolerance in a 20 m chain is Read Post »
a) centre of one handle to centre of other handle b) outside of one handle to outside of other handle
The length of a chain is measured from Read Post »
a) the length of telescope b) the diameter of vertical circle c) the diameter of lower plate d) the diameter
Size of a theodolite is specified by Read Post »
a) backsight b) intermediate sight c) foresight d) all of the above Ans: d
The rise and fall method of levelling provides a complete check on Read Post »
a) 4 chains b) 6 chains c) 120 m d) 180m Ans: b
a) the magnetic needle moves with the box b) the line of the sight does not move with the box
In the prismatic compass Read Post »
a) to support the main part of the instrument b) to attach the theodolite to the tripod c) to provide
Which of the following is not the function of levelling head ? Read Post »
a) 99.345 m b) 100.345 m c) 100.655m d) 101.870m Ans: a
a) steel b) invar c) linen d) cloth and wires Ans: d
A metallic tape is made of Read Post »