| An imaginary line lying throughout on the surface of the earth and preserving a constant inclination to the horizontal, is called |
A) contour line
B) contour gradient
C) level line
D) line of gentle scope
| In horizontal angles, the error due to imperfect levelling of the plate bubble is |
A) large when sights are nearly level
B) large for long sights
C) less for steeply inclined sights
D) large for steeply inclined sights
| In tangential tacheometry, an ordinary level staff is used |
A) leaning towards the instrument for inclined sights upward
B) leaning away from the instrument for inclined sights downwards
C) vertical in all cases
D) none of these
| You have to observe an included angle with better accuracy than what is achievable by a vernier, you will prefer the method of |
A) repetition
B) reiteration
C) double observations
D) exactness
| The boundary of water of a still lake, represents |
A) level surface
B) horizontal surface
C) contour line
D) a concave surface
| Prolongation of chain line across an obstruction in chain surveying, is done by |
A) making angular measurements
B) drawing perpendiculars with a chain
C) solution of triangles
D) all the above
| The length of a traverse leg may be obtained by multiplying the latitude and |
A) secant of its reduced bearing
B) sine of its reduced bearing
C) cosine of its reduced bearing
D) tangent of its reduced bearing
| The chord of a curve less than peg interval, is known as |
A) small chord
B) sub-chord
C) normal chord
D) short chord
| An internal focussing type surveying telescope, may be focussed by the movement of |
A) objective glass of the telescope
B) convex-lens in the telescope
C) concave lens in the telescope
D) plano-convex lens in the telescope
| Number of subdivisions per metre length of a levelling staff is |
A) 100
B) 200
C) 500
D) 1000
