# R.L. of floor at a building is 74.4 m, staff reading on the floor is 1.625 and staff reading when it is held inverted with bottom touching the ceiling of a hall is 2.870; then the height of the ceiling above the floor is:

1.  3.593 m

2.  3.953 m

3.  4.495 m

4.  4. 594 m

4

4.495 m

Explanation :
No Explanation available for this question

# Consider the following pre-conditions for correct use of a theodolite: 1. The vertical axis need not be perpendicular to the plane of the plate level bubble. 2. The line of sight must be perpendicular to the horizontal axis. 3. The axis of the level tube attached to the telescope need not be parallel to the line 4. The vertical axis, the horizontal axis and the line of sight should all pass through Which of these conditions is/are necessary

1.  1, 2, 3 & 4

2.  2 only

3.  3 only

4.  1 & 4 only

4

2 only

Explanation :
No Explanation available for this question

# Following observations were taken with a transit fitted with stadia wires. The line of sight was horizontal and the staff was held vertical.   Reading on staff(m) Top hair 1.726 Middle hair 2.278 Bottom hair 2.830 The tacheometric constants k and C are 100 and 0.4 m respectively. The horizontal distance between staff and instrument is:

1.  90.8

2.  100.8

3.  110.8

4.  120.8

4

100.8

Explanation :
No Explanation available for this question

# Following observations were taken during a reciprocal leveling: Instrument near P Q Staff reading at P 1.824 0.928 Staff reading at Q 2.748 1.606 If reduced level of P is 140.815 m, the reduced level of Q is:

1.  138.014 m

2.  139.616 m

3.  140.014 m

4.  141.616 m

4

140.014 m

Explanation :
No Explanation available for this question

# A counter may be defined as an imaginary line passing through:

1.  Points on the longitudinal section

2.  Points of equal elevation

3.  Point of equal local ground slope

4.  Points of transverse section surveys

4

Points of equal elevation

Explanation :
No Explanation available for this question

# A closed contour line with two or more higher contours inside it will represent a:

1.  Depression

2.  Hill

3.  Cave

4.  Well

4

Hill

Explanation :
No Explanation available for this question

# When compared with the co-latitude of the place of observation, the declination of a circumpolar star is always,

1.  Lesser

2.  Greater

3.  Equal

4.  Either lesser or equal

4

Greater

Explanation :
No Explanation available for this question

# Which of the following reasons are responsible for adoption of post-chlorination of water 1. Chlorine demand is reduced. 2. Possibility of taste and odour formation is reduced. 3. Possibility of carcinogenic compounds is reduced. 4. Chloramines are formed.

1.  1, 2, 3 & 4

2.  1, 2 & 3 only

3.  1 & 4 only

4.  2, 3 & 4 only

4

1 & 4 only

Explanation :
No Explanation available for this question

# Which one of the following tests employs Ethylene Diamine Tetra Acetic Acid as a titrating agent

1.  Chlorides

2.  Dissolved oxygen

3.  Hardness

4.  Residual chlorine

4

Hardness

Explanation :
No Explanation available for this question

# In case of levelling, back sight is:

1.  A fixed point of known elevation

2.  The last staff reading taken before shifting the instrument

3.  The first staff reading taken after setting the instrument

4.  Any staff reading taken on a point of unknown elevation

4