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Q1. | 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 [Correct Answer] |

B. | reiteration [Wrong Answer] |

C. | double observations [Wrong Answer] |

D. | exactness. [Wrong Answer] |

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

⇒ Cross staff is an instrument used for

measuring approximate horizontal angles

setting out right angles

measuring bearings of the lines

none of the above

⇒ Ranging is an operation of.

reconnaissance

judging the distance

determination of slope

establishing intermediate points between terminals.

⇒ The angle of intersection of a contour and a ridge line, is.

30Â°

45Â°

60Â°

90Â°.

⇒ Ramsden eye-piece consists of.

two convex lenses short distance apart

two concave lenses short distance apart

one convex lens and one concave lens short distance apart

two plano-convex lenses short distance apart, with the convex surfaces facing each other.

⇒ The least count of prismatic compass is

1°

30'

15'

20"

⇒ Irregular variation in magnetic declination may be due to

Magnetic storm

Earthquakes

Solar influence

Any of the above

⇒ The method of reversal.

is usually directed to examine whether a certain part is truly parallel or perpendicular to another

makes the erroneous relationship between parts evident

both (a) and (b)

neither (a) nor (b).

⇒ For a well-conditioned triangle, no angle should be less than

20°

30°

45°

60°

⇒ The rise and fall method

is less.accurate than height of instrument method

is not suitable for levelling with tilting levels

provides a check on the reduction of intermediate point levels

quicker and less tedious for large number of intermediate sights

⇒ A relatively fixed point of known elevation above datum, is called.

bench mark

datum point

reduced level

reference point.

⇒ The defect of a lens whereby rays of white light proceeding from a point get dispersed into their components and conveyed to various foci, forming a blurred and coloured image is known as.

chromatic aberration

spherical aberration

astigmatism

coma.

⇒ 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.

⇒ The curvature of the earth's surface, is taken into account only if the extent of survey is more than.

100 sq km

160 sq km

200 sq km

260 sq km.

⇒ At the equator, the amount of dip is

0°

45°

60°

90°

⇒ When the bubble of the level tube of a level, remains central.

line of sight is horizontal

axis of the telescope is horizontal

line of collimation is horizontal

geometrical axis of the telescope is horizontal.

⇒ What is the whole circle bearing of a quadrant bearing N 15° 28' W

195°28'

164°32'

344°32'

344°28'

⇒ The minimum range for sliding the focusing lens in the internal focusing telescope for focusing at all distances beyond 4 m is.

5 mm

10 mm

15 mm

20 mm.

⇒ An imaginary line joining the points of equal elevation on the surface of the earth, represents.

contour surface

contour gradient

contour line

level line

⇒ Which of the following instruments can be used for the direct measurement of directions?

Surveyor's compass

Prismatic compass

Any of the above

None of the above

⇒

*ABCD*is a regular parallelogram plot of land whose angle

*BAD*is 60°. If the bearing of the line

*AB*is 30°, the bearing of

*CD*, is.

90Â°

120Â°

210Â°

270Â°

⇒ The correction to be applied to each 30 metre chain length along θ° slope, is.

30 (sec Î¸ - 1) m

30 (sin Î¸ - 1) m

30 (cos Î¸ - 1) m

30 (tan Î¸ - 1) m

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

S 0Â° E

S 0Â° W

S

N.

⇒ The length of a ranging rod should be

1.5 to 2 m

2 to 3 m

3 to 4m

2.5 to 4.5 m

⇒ The two point or three point problems are methods of

Orientation

Resection

Traversing

(A) and (B) above

⇒ The lens equation 1/f = 1/f

_{1}+ 1/f

_{2}is applicable

when the thickness of the lens is small

only to conjugate distances along the principal axis

the computed quantities are accurate enough for geometrical optics of simple distances

all the above.

⇒

*ABCD*is a rectangular plot of land. If the bearing of the side

*AB*is 75°, the bearing of

*DC*is.

75Â°

255Â°

105Â°

285Â°

⇒ While surveying a plot of land by plane tabling, the field observations.

and plotting proceed simultaneously

and plotting do not proceed simultaneously

and recorded in field books to be plotted later

all the above.

⇒ One of the tacheometric constants is additive, the other constant, is.

subtractive constant

multiplying constant

dividing constant

indicative constant.

⇒ Removal of parallax, may be achieved by focussing.

the objective

the eye-piece

the objective and the eye-piece

none of these.

⇒ The Random errors tend to accumulate proportionally to.

numbers of operations involved

reciprocal of operations involved

square root of the number of operation involved

cube root of the number of operation involved.