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# Compass Surveying And Theodolite - 1

## 10 Questions MCQ Test Mock Test Series for Civil Engineering (CE) GATE 2020 | Compass Surveying And Theodolite - 1

Description
This mock test of Compass Surveying And Theodolite - 1 for Civil Engineering (CE) helps you for every Civil Engineering (CE) entrance exam. This contains 10 Multiple Choice Questions for Civil Engineering (CE) Compass Surveying And Theodolite - 1 (mcq) to study with solutions a complete question bank. The solved questions answers in this Compass Surveying And Theodolite - 1 quiz give you a good mix of easy questions and tough questions. Civil Engineering (CE) students definitely take this Compass Surveying And Theodolite - 1 exercise for a better result in the exam. You can find other Compass Surveying And Theodolite - 1 extra questions, long questions & short questions for Civil Engineering (CE) on EduRev as well by searching above.
QUESTION: 1

Solution:
QUESTION: 2

### Local attraction in compass surveying may exist due to

Solution:

Local attraction is a term used to denote any influence, which prevents the needle from pointing to the magnetic north in a given locality. Difference of fore bearing and back bearing = 0 ⇒ No local attraction.

QUESTION: 3

### The horizontal angle between the true meridian and magnetic meridian at a place is called

Solution:
QUESTION: 4

A negative declination shows that the magnetic meridian is to the

Solution:
QUESTION: 5

If the lower clamp screw is tightened and upper clamp screw is loosened, the theodolite may be rotated

Solution:
QUESTION: 6

The error due to eccentricity of inner and outer axes can be eliminated by

Solution:

Error due to eccentricity of inner and outer axes means that the centre of graduated horizontal circle does not coincide with the centre of vernier plate.

QUESTION: 7

While measuring horizontal angles by the method of repetition with a theodolite, readings are taken on both the verniers. Which one of the following errors will be eliminated by reading both the verniers?

Solution:
QUESTION: 8

if the quadrantal bearing of a line is N25°W, then the whole circle bearing of the line is

Solution:
QUESTION: 9

The following bearings were observed while traversing with a compass:

Which stations were affected by local attraction?

Solution:

As the difference between F.B and B.B of line AB is exactly 180°, stations A and B are free from local attraction which is not the case with line CD.
Hence stations C and D are affected by local attraction.

QUESTION: 10

The coordinates of two end-points A and B of a traverse line AB are

The bearing of the line AB will be

Solution:

Explanation : Bearing of line AB=tan-1 (Xb-Xa/Yb-ya).

= tan-1(2000-1000/1000-1000)

= tan-1(1000/0).

= tan-1(infinity Or not define).

Now by use of trigonometric table find the angle which tan value should be infinity or not define

So the value is 90°.