Test: Methods of Levelling - Civil Engineering (CE) MCQ

# Test: Methods of Levelling - Civil Engineering (CE) MCQ

Test Description

## 10 Questions MCQ Test Geomatics Engineering (Surveying) - Test: Methods of Levelling

Test: Methods of Levelling for Civil Engineering (CE) 2024 is part of Geomatics Engineering (Surveying) preparation. The Test: Methods of Levelling questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Methods of Levelling MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Methods of Levelling below.
Solutions of Test: Methods of Levelling questions in English are available as part of our Geomatics Engineering (Surveying) for Civil Engineering (CE) & Test: Methods of Levelling solutions in Hindi for Geomatics Engineering (Surveying) course. Download more important topics, notes, lectures and mock test series for Civil Engineering (CE) Exam by signing up for free. Attempt Test: Methods of Levelling | 10 questions in 30 minutes | Mock test for Civil Engineering (CE) preparation | Free important questions MCQ to study Geomatics Engineering (Surveying) for Civil Engineering (CE) Exam | Download free PDF with solutions
Test: Methods of Levelling - Question 1

### How many methods are used in levelling?

Detailed Solution for Test: Methods of Levelling - Question 1

The 2 methods are the height of instrument method and rise and fall method. These are used to evaluate heights of various points.

Test: Methods of Levelling - Question 2

### Which of the following is the INCORRECT correction to be applied while determining the difference in elevation between two points, when the observations are from only one point?

Detailed Solution for Test: Methods of Levelling - Question 2

The following corrections are to be applied while determining the difference in elevation between two points when the observations are from only one point:

• Axis signal correction
• In order to observe the points from the theodolite station, signals of appropriate heights are erected at the points to be observed. The signal may or may not be the same height as that of the instrument.
• If the height of the signal is not the same as that of the height of the instrument axis above the station, a correction known as the axis signal correction or eye and object correction is applied
• Correction for curvature
• Earth has actually a curved surface which is assumed to be a level surface for simplification in the surveying. So the level line between the stations is not horizontal in real conditions but the line of sight by the leveling instrument is horizontal.
• The vertical distance between the horizontal line and the level line denotes the effect of the curvature of the earth. The correction applied to counter this error is curvature correction
• Correction for refraction
• The rays of light passing through the atmosphere of different densities bend down. It results in this type of correction.
• The effect of refraction is 1/7th time the curvature correction but is of the opposite nature. Hence the correction for refraction is additive to the staff reading.

Hence, Correction for sag is the incorrect correction to be applied while determining the difference in elevation between two points, when the observations are from only one point.

 1 Crore+ students have signed up on EduRev. Have you?
Test: Methods of Levelling - Question 3

### The suitable contour interval for a map with scale 1 : 10000 is

Test: Methods of Levelling - Question 4

How many types of levelling are there?

Detailed Solution for Test: Methods of Levelling - Question 4

There are 4 ways to perform levelling. They are direct levelling, trigonometric levelling, barometric levelling and stadia levelling.

Test: Methods of Levelling - Question 5

In a road embankment work, the reduced level of formation bed at Zero m chainage is 107 m. The road is supposed to have a downward gradient of 1 in 100. Determine the reduced level of formation bed at 1000 m chainage

Detailed Solution for Test: Methods of Levelling - Question 5

Given data,
The reduced level of formation bed at Zero m chainage = 107 m
A downward gradient = 1 in 100
Hence, the reduced level of formation bed at 1000 m chainage is

Test: Methods of Levelling - Question 6

In an adjusted level, when the bubble is central, the axis of the bubble tube becomes parallel to

Test: Methods of Levelling - Question 7

Trigonometric levelling is also called:

Detailed Solution for Test: Methods of Levelling - Question 7

In trigonometric levelling, the horizontal distance and vertical angle are measured from the station to the object. It uses trigonometric relations to compute the vertical height of a point.

Test: Methods of Levelling - Question 8

Correct method of Arithmetic check in rise and fall method:
A. ΣBS -ΣFS = Σrise -Σfall
B. last station RL - First station RL = Σrise -Σfall
C. ΣBS - ΣFS = last station RL - First station RL

Detailed Solution for Test: Methods of Levelling - Question 8

For leveling work, the following equation must be satisfied:

• ΣBS - ΣFS = last station RL - First station RL
• ΣBS -ΣFS = Σrise -Σfall

Based on the above two equations, the third equation can be obtained.
Last station RL - First station RL = Σrise -Σfall
Note:

• If the Last RL is more than that of the First RL, this means that the ground slope is upward or the ground is rising from the initial benchmark.
• Backsight is a first reading of staff that remains unchanged when the leveling apparatus is taken to another or new point. It is taken on the known reduced level or benchmark.
• Foresight is the reading of the staff or leveling rod which is taken in the forward direction of the leveling process, and it is the last reading of the whole surveying process.
• All the reading which is taken between backsight and foresight is called inter-sight.
Test: Methods of Levelling - Question 9

Ranging is an operation of

Test: Methods of Levelling - Question 10

In _________ levelling, the first and last point are at a far distance.

Detailed Solution for Test: Methods of Levelling - Question 10

In differential levelling, a number of inter-stations are located and then the instrument is shifted to each station and the elevation is observed.

## Geomatics Engineering (Surveying)

19 videos|31 docs|35 tests
Information about Test: Methods of Levelling Page
In this test you can find the Exam questions for Test: Methods of Levelling solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Methods of Levelling, EduRev gives you an ample number of Online tests for practice

## Geomatics Engineering (Surveying)

19 videos|31 docs|35 tests