**Important Questions in Fundamental Concept of Survey for GATE**

**12 Most Important Questions** in **Fundamental Concept of Survey for GATE**. The cornerstone of success in the **GATE 2024** exam lies in** mastering the fundamental principles of survey**. This blog post serves as a beacon, illuminating the key concepts that form the bedrock of survey theory. Journey through this guide as we explore vital questions that reinforce your knowledge and readiness for the GATE examination.

## One Mark questions

**Q 1)** The accuracy of an Electronic Distance Measuring Instrument (EDMI) is specified as ‡ (a mm + b ppm). Which one of the following statements is correct?

(a) Both a and b remain constant, irrespective of the distance being measured.

(b) A remains constant and b varies in proportion to the distance being measured.

(c) A varies in proportion to the distance being measured and b remains constant.

(d) Both a and b vary is proportion to the distance being measured.

**[GATE-2017 SET-I]**

**Q 2) **Which of the following statements is FALSE?

(a) Plumb line is along the direction of gravity

(b) Mean Sea Level (MSL) is used as a reference surface for establishing the horizontal control

(c) Mean Sea Level (MSL) is a simplification

(d) Geoid is an equipotential surface of gravity

**[GATE-2015 SET-I]**

**Q 3)** The survey carried out to delineate natural features such as hills, rivers, forests and man-made features such as turns, towns, villages, buildings, roads, transmission lines and canals is classified as.

(a) engineering survey

(b) geological survey

(c) land survey

(d) topographic survey

**[GATE-2014 SET-11]**

**Q 4)** The type of surveying in which the curvature of the Earth is taken into account is called.

(a) Geodetic surveying

(b) Plane surveying

(C) Preliminary surveying

(d) Topographical surveying

**[GATE-2008]**

**Q 5)** The following observations of an angle, P, are made as P = 30°28' 40"; ЗР = 91°25' 55" 4P = 121° 54 ' 30"

The most probable value of angle, P, is

(а) 30°28'38.1"

(b) 30°28'37.9"

(c) 30°28'37.5"

(d) 30°28'37.3"

**[GATE- 1992]**

**Q 6)** The length of a base line measured on ground at an elevation of 300metres above mean sea level is 2250 meters. The required correction to reduce to sea level length (given the radius of earth is 6370 km) is_______?

**[GATE-1991]**

**Q 7)** Symmetric errors are those errors

(a) whose effects are cumulative and can be determined

(b) on circumference of circumscribing circle

(c) outside the great triangle

(d) in the centre of the circumscribing circle.

**[GATE-1990]**

**Q 8)** The required slope correction for a length of 60m, along a gradient of 1 in 20 is:

(a) 7.50 cm

(b) 0.750 cm

(c) 75.0 cm

(d) 5.50 cm

**[GATE 1990]**

## two marks question

**Q 9) **A square area (on the surface of the earth) with side 100 m and uniform height, appears as 1 cm^{2} on a vertical aerial photograph. The topographic map shows that a contour of 650 m passes through the area. If focal length of the camera lens is 150 mm, the height from which the aerial photograph was taken, is

(a) 800 m

(b) 1500 m

(c) 2150 m

(d) 3150 m

**[GATE-2018, SHIFT-I]**

**Q 10)** In a survey work, three independent angle X, Y and Z were observed with weights W_{x}, W_{y}, W_{z} respectively. The weight of the sum of angles X, Y and Z is given by

(a) 1 / [(1/ W_{x})+(1/ W_{Y})+(1/ W_{z})

(b) [(1/ W_{x})+(1/ W_{Y})+(1/ W_{z})

(c) W_{x}+ W_{y} + W_{z}

(d) W^{2}_{x}+ W^{2}_{y} + W^{2}_{z}

**Q 11)** The plan of a survey plotted to a scale of 10 m to 1 cm is reduced in such a way that a line originally 10 cm long now measures 9 cm. The area of the reduced plan is measured as 81 cm^{2}. The actual area (m^{2}) of the survey is?

(a) 10000

(b) 6561

(c) 1000

(d) 656

**[GATE-2008]**

**Q 12)** The plan of a map was photo-copied to a reduced size such that a line originally 100mm, measures 90 mm. The original scale of the plan was 1 : 1000. The revised scale is

(a) 1 : 900

(C) 1 : 1121

(b) 1 : 1111

(d) 1 : 1221

**[GATE-2007]**

To understand all the fundamental regarding Surveying do visit the following Category.

To understand all about the fundamental concept of surveying do visit the following Article.

To understand all about the Scale, Types Of Scale And Accuracy & Errors In Surveying do visit the following link.

To understand all about the Chain Surveying: The Fundamental For Linear Measurement do visit the following link.

To understand all about the Correction In Chaining/Taping And Ranging In Surveying do visit the following link.