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34問 • 12ヶ月前

問題一覧

One of the oldest arts practiced by man is ______, it has always been necessary to mark boundaries and divide tracts of land

surveying

Planning and design are based on the results or surveys, and construction is controlled by surveying

✅

"Surveying is the art of determining the positions of points on or near the earth's surface by means of measurements in the three elements of space, namely, ______, ______, and ______." — ______

(1) distance (2) direction (3) elevation (4) Raynerr and Schmidt

Surveying is the process of measuring and mapping the Earth’s surface or determining boundaries and positions on it

surveying

It is the art and science of determining angular and linear measurements to establish the form, extent, and relative position of points, lines, and areas on or near the surface of the earth or on other extraterrestrial bodies through applied mathematics and the use of specialized equipment and techniques

surveying

A type of surveying in which the earth id considered a flat surface, and where distances and areas involved are of limited extent that the exact shape of the earth is disregarded

plane surveying

Plane surveying is the process of measuring and mapping small areas of the Earth’s surface, assuming it is flat

plane surveying

A type of surveying in which the earth is considered to be spheroidal shape

geodetic surveying

It serves as basis to produce accurate base and topographic map

geodetic surveying

In surveying, measurement are usually concentrated on:

— angles — elevations — times — lines — areas — volumes

The process of determining the extent, size, or dimension of a particular quantity in comparison to a given standard

measurement

Any surveying measurement is always subjected to the imperfections of the instrument used, and the different errors inherent in the process of obtaining the measurement

✅

There is no such thing as a perfect measuring instrument nor there is a surveyor whose senses are sufficiently perfect to measure any quantity exactly

✅

A comparison of measured quantity with standard measuring units employed

direct measurements

This method directly measures using chains, tapes, and other types of surveying equipment

direct measurements

Examples of direct measurements:

using tape to measure distance total station to find angle barometer for atmospheric pressure

When it is not possible to apply a measuring instrument directly to a quantity to be measured, ______ is used

indirect measurement

The observed value is determined by its relationship to some other known values

indirect measurements

Examples of indirect measurements:

elevation determination using backsight and foresight readings determining lot area using angles and distances

The SI units of plane angles are in ______

radians

Measures angles in degrees, minutes, and seconds It is also known as base ______ 360* = 1 revolution 1* = 60‘ 1’ = 60”

sexagesimal units 60

Gradian is the unit of measure of an angle 400^g = 1 revolution 1^g = 100’ 1’ = 60”

centesimal units

These are used to report a value, measured or calculated, to the correct number of decimal places or digits that will reflect the precision of the value

significant figures

✅

It becomes the official record of survey

field notes

It constitutes the only reliable way and permanent record of actual work done in the field

surveying field notes

✅

It is usually worked over in the office into some more advanced form of presentation, such as map, report, or a computation

field notes

These are always kept for future reference and may be used by another surveyor some years later

field notes

Types of notes:

— sketches — tabulations — explanatory notes — computations — combination of the aforementioned

Written description of what is done in the field

explanatory notes

Information in the field notebook:

— title of the field work — date and time of the day — weather conditions — group member names and designations — list of equipments used

— all survey equipments used must be listed including its make, brand, and serial number

information in the field notebook

EM Waves and Spectrum

John Marabiles · 73問 · 1年前

EM Waves and Spectrum