# Consider the following statements: 1. Groynes are constructed projecting from the bank into the river at the bank to be protected from flood 2. Repelling groyne projects downstream into the river –flow from the point of its origin from the bank 3. Attracting groyne projects upstream into the river from the point of its origin from the point of its origin from the bank 4. Perpendicular groyne projects normal to the river-flow from the point of its origin from the bank Which of these statements are correct

1.  1 and 4

2.  1 and 2

3.  2 and 3

4.  3 and 4

4

1 and 4

Explanation :
No Explanation available for this question

# Which one of the following statements is correct

1.  In a retrograde vernier, (n-1) divisions on the primary scale are divided into n divisions on the vernier scale.

2.  A double vernier consists of two simple verniers placed end-to-end forming one scale with the zero in the center

3.  In an extended vernier, (2n+1) primary divisions are divided into n divisions on the vernier.

4.  In a direct vernier, (n+1) primary divisions are divided into n equal divisions on the vernier scale

4

In a retrograde vernier, (n-1) divisions on the primary scale are divided into n divisions on the vernier scale.

Explanation :
No Explanation available for this question

# The length of a line measured with a 30 m chain was found to be 734.6. It was afterwards found that the chain was 0.05 m too long. The true length of the line was:

1.  630.82 m

2.  680.82 m

3.  735.82 m

4.  780.92 m

4

735.82 m

Explanation :
No Explanation available for this question

# Following offsets were taken from a survey line to a hedge: Distance in meters 0 5 10 15 20 30 40 Offsets in meters 3 4 5.5 5 6 4 4.5 The area between survey line and the hedge is (by trapezoidal method):

1.  185.5 m2

2.  187.5 m2

3.  189.5 m2

4.  289.5 m2

4

187.5 m2

Explanation :
No Explanation available for this question

# The bearing of line AB is 1500 and the angle ABC is1240. Bearing the line BC is:

1.   940

2.  980

3.  1980

4.  900

4

940

Explanation :
No Explanation available for this question

# The following observations were taken during testing of a dumpy level: Instrument at Staff reading on   P Q P 1.475 m 2.205 m Q 1.440 m 2.060 m The collimation error in the instrument was:

1.  +0.055 m

2.  +0.005 m

3.  -0.055 m

4.   -0.005 m

4

+0.055 m

Explanation :
No Explanation available for this question

# R.L of a floor level is 200.490 m. Staff reading on the floor is 1.695 m. Reading on the staff held upside down against the bottom of the roof is 3.305m. Height of the ceiling is:

1.  3.5 m

2.  4.0 m

3.  5.0 m

4.   6.0 m

4

5.0 m

Explanation :
No Explanation available for this question

# Which of the following terms related to leveling are correctly defined 1. Line of collimation: Line joining the intersection of the crosshairs to the optical center of the object glass and its continuation 2. Back-sight: First staff reading taken after the level is set up 3. Fore-sight: Last staff reading prior to shifting of level, or termination of the process of levelling 4. Height of instrument: Height of center of telescope above the ground where the level is set up.

1.  1, 2, 3 and 4

2.  1, 2 and 4 only

3.  1, 2 and 3 only

4.  2, 3 and 4 only

4

1, 2, 3 and 4

Explanation :
No Explanation available for this question

# Two stations P and Q are on the opposite banks of a river. Following observations were taken in reciprocal leveling. Instrument near Staff reading on   P Q P 1.400 3.500 Q 0.600 2.200 R.L of P is 200.000 m, and then R.L of Q is nearly:

1.  199.3

2.  201.7

3.  200.0

4.  198.2

4

198.2

Explanation :
No Explanation available for this question

# Which of the following set of terms does not relate to operation of a theodolite

1.  Transiting and inverting

2.  Face left and face right

3.  Right swing and left swing

4.  Gauging and sounding

4