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Q1. | The vertical angle between longitudinal axis of a freely suspended magnetic needle and a horizontal line at its pivot, is known. |

A. | declination [Wrong Answer] |

B. | azimuth [Wrong Answer] |

C. | dip [Correct Answer] |

D. | bearing. [Wrong Answer] |

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

⇒ The distances

*AC*and

*BC*are measured from two fixed points

*A*and

*B*whose distance

*AB*is known. The point

*C*is plotted by intersection. This method is generally adopted in.

chain surveying

traverse method of surveys

triangulation

none of these.

⇒ Hydrographic survey deal with the mapping of

Large water bodies

Rainfall data

Wave movement

None of the above

⇒ The slope correction for a 3° slope for a length of 100 m, is.

-0.11 m

-0.11 m

-1.87 m

-0.137 m

⇒ Subtense bar is an instrument used for

levelling

measurement of horizontal distances in plane areas

measurement of horizontal distances in undulated areas

measurement of angles

⇒ A telescope is said to be inverted if its

vertical circle is to its right and the bubble of the telescope is down

vertical circle is to its right and the bubble of the telescope is up

vertical circle is to its left and the bubble of the telescope is down

vertical circle is to its left and the bubble of the telescope is up

⇒ The whole circle bearing of a line is 290°. Its reduced bearing is.

N 20Â° E

N 20Â° W

N 70Â° W

S 70Â° E

⇒ If vertical angles of inclined sights do not exceed 10° and non-verticality of the staff remains within 1°, stadia system of tacheometric observations are made on.

staff normal

staff vertical

staff normal as well as vertical

none of these.

⇒ An imaginary line lying throughout the surface of ground and preserving a constant inclination to the horizontal is known as

contour line

horizontal equivalent

contour interval

contour gradient

⇒ Prismatic compass is considered more accurate than a surveyor's compass, because.

it is provided with a better magnetic needle

it is provided with a sliding glass in the object vane

its graduations are in whole circle bearings

it is provided with a prism to facilitate reading of its graduated circle

⇒ 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.

⇒ With the rise of temperature, the sensitivity of a bubble tube

decreases

increases

remains unaffected

none of the above

⇒ In case of geographical maps, the scale is usually

1 cm = 10 cm to 10 cm

1 cm = 50 m to 100m

1 cm = 5 km to 160 km

1 cm = more than 200 km

⇒ The boundary of water of a still lake, represents.

level surface

horizontal surface

contour line

a concave surface.

⇒ In centesimal system circumference is divided Into

400 parts

360 parts

180 parts

240 parts

⇒ Two hill tops

*A*and

*B*20 km apart are intervened by a third top

*C*. If the top most contour of the three hill tops are of the same value, state whether the line of sight

*AB.*

passes clear of hill top C

passes below the hill top C

grazes the hill top C

none of these.

⇒ Two contour lines, having the same elevation.

cannot cross each other

can cross each other

cannot unite together

can unite together.

⇒ The angle between two plane mirrors of an optical square should be

30°

45°

60°

90°

⇒ A uniform slope was measured by the method of stepping. If the difference in level between two points is 1.8 m and the slope distance between them is 15 m, the error is approximately equal to.

cumulative, + 0.11 m

compensating, Â± 0.11 m

cumulative, - 0.11 m

none of these

⇒ Cross staff is an instrument used for

measuring approximate horizontal angles

setting out right angles

measuring bearings of the lines

none of the above

⇒ In a theodolite.

the telescope axis is perpendicular to transit axis

the axis of rotation is perpendicular to transit axis

the telescope axis, the transit axis and the rotation axis pass through the centre of theodolite

all the above.

⇒ The accuracy of measurement in chain surveying, does not depend upon.

length of the offset

scale of the plotting

importance of the features

general layout of the chain lines.

⇒ If the radius of a simple curve is

*R*, the length of the chord for calculating offsets by the method of chords produced, should not exceed.

R/10

R/15

R/20

R/25.

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

horizontal interval

horizontal equivalent

vertical equivalent

contour interval

⇒ An offset rod is provided at its top with

Hook

Flag

Distance measuring arrangement

None of these

⇒ The permissible limits of errors in chaining for measurement on rough or hilly ground is

1 : 2000

1 : 1000

1 : 500

1 : 250

⇒ The first observation taken on a turning point is

Fore sight

Back sight

Both are correct

None of the above

⇒ In geodetic surveys higher accuracy is achieved, if.

curvature of the earth surface is ignored

curvature of the earth surface is taken into account

angles between the curved lines are treated as plane angles

none of these.

⇒ In levelling the error due to refraction is

Positive

Negative

Compensating

Progressive

⇒ The error in measured length due to sag of chain or tape is known as

Positive error

Negative error

Compensating error

Instrumental error

⇒ For orientation of a plane table with three points

*A*,

*B*and

*C*, Bessel's drill is.

Align b through a and draw a ray towards c, align a through b and draw a ray towards c, finally align c through the point of intersection of the previously drawn rays

Align c through a and draw a ray towards b, align a through c and draw a ray towards b, finally align b through the point of intersection of the previously drawn rays

Align c through b and draw a ray towards a, align b through c and draw a ray towards a, finally align a, through the point of intersection of the previously, drawn rays

In the first two steps any two of the points may be used and a ray drawn towards the third point, which is sighted through the point of intersection of previously drawn rays in the final step.