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Q1. | The temporary adjustment of a prismatic compass is |

A. | Centring [Correct Answer] |

B. | Adjustment of levels [Wrong Answer] |

C. | Adjustment of needle [Wrong Answer] |

D. | Adjustment of vane [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ The total change in level along the line is equal to total back sights.

minus total fore sights

the total rises minus total falls

the reduced level of last point minus reduced level of the first point

all the above.

⇒ Flint glass.

has slightly the greater refracting power than crown glass

has roughly double refracting power than that of crown

and crown glass proportions yield the required focal length and neutralise the dispersion produced by the convex lens at the emergence from the concave

all the above.

⇒ If the whole circle bearing of a line is 180°, its reduced bearing is.

S 0Â° E

S 0Â° W

S

N.

⇒ The position of point can be fixed more accurately by

Perpendicular offset

Optical square

Prism square

Oblique offsets

⇒ The limiting length of an offset does not depend upon.

accuracy of the work

method of setting out perpendiculars

scale of plotting

indefinite features to be surveyed.

⇒ Different grades are joined together by a

compound curve

transition curve

reverse curve

vertical curve

⇒ In tangential tacheometry, an ordinary level staff is used.

leaning towards the instrument for inclined sights upward

leaning away from the instrument for inclined sights downwards

vertical in all cases

none of these.

⇒ The combined effect of curvature and refraction over a distance

*L*kilometres is.

67.2 L2 mm

76.3 L2 mm

64.5 L2 mm

none of these.

⇒ During chaining along a straight line, the . leader of the party has 4 arrows in his hand while the follower has 6. Distance of the follower from the starting point is

4 chains

6 chains

120 m

180m

⇒ Pick up the correct statement from the following :

the apparent error on reversal is twice the actual error

the correction may be made equal to half the observed discrepancy.

the good results may be obtained from a defective instrument by reversing and taking the mean of two erroneous results

all the above.

⇒ The bearings of the lines

*AB*and

*BC*are 146° 30' and 68° 30'. The included angle

*ABC*is.

102Â°

78Â°

45Â°

none of these.

⇒ Number of links per metre length of a chain are.

2

5

8

10

⇒ The total number of zeroes graduated on a surveyor's compass is

One

Two

Three

Four

⇒ If the declination of the needle is 10° W.

each of the whole circle reckoning has to be micros by 10Â°

in the quadrantal method, the correction is positive in the 1st and 3rd quadrants

in the quadrantal method, the corrections is negative in 2nd and 4th quadrants

all the above.

⇒ With usual notations, the expression V

^{2}/gR represents

centrifugal force

centrifugal ratio

super elevation

radial acceleration.

⇒ If the length of a transition curve to be introduced between a straight and a circular curve of radius 500 m is 90 m, the maximum perpendicular offset for the transition curve, is.

0.70 m

1.70 m

2.70 m

3.70 m

⇒ The branch of surveying in which both horizontal and vertical positions of a point, are determined by making instrumental observations, is known.

tacheometry

tachemetry

telemetry

all the above.

⇒ In chain surveying tie lines are primarily provided.

to check the accuracy of the survey

to take offsets for detail survey

to avoid long offsets from chain lines

to increase the number of chain lines.

⇒ Bergchrund is a topograhical feature in.

plains

water bodies

hills

glaciated region

⇒ In plane table survey, the method used for locating plane table station is

Traversina

Resection

Radiation

(A) or (B) above

⇒ Contour lines of different elevations can unite to form one line, only in the case of.

a vertical cliff

a saddle

a water shed line

a hill top.

⇒ The horizontal angle between true meridian and magnetic meridian, is known.

bearing

magnetic declination

dip

convergence.

⇒ In plane tabling, the straight lines, angles and triangles are constructed by

Protractor

Divider

Graphical method

Planimeters

⇒ If the whole circle bearing of a line is 270°, its reduced bearing is.

N 90Â° W

S 90Â° W

W 90Â°

90Â° W.

⇒ Method used for chaining on sloping ground is

By stepping method

By hypotenusal allowance method

By clinometer method

Both (A) and (B) above

⇒ The magnetic meridian at any point, is the direction indicated by a freely suspended

magnetic needle

and properly balanced magnetic needle

properly balanced and uninfluenced by local attractive force

magnetic needle over an iron pivot.

⇒ Locating the position of a plane table station with reference to three known points, is known as.

intersection method

radiation method

resection method

three point problem.

⇒ Which of the following is not used in measuring perpendicular offsets ?

line ranger

steel tape

optical square

cross staff

⇒ Whole circle bearing of a line is preferred to a quadrantal bearing merely because.

bearing is not completely specified by an angle

bearing is completely specified by an angle

Sign of the correction of magnetic declination is different in different quadrants

its trigonometrical values may be extracted from ordinary tables easily.

⇒ The constant vertical distance between two adjacent contours, is called.

horizontal interval

horizontal equivalent

vertical equivalent

contour interval