An aircraft was flying height of 25000 feet above the ground and takes a vertical aerial photograph of an object which is 30 meters height. The image of the object is at a distance of 6 inches from the nadir point find the relief displacement ?

Q: Which of the following mistakes was made by a measurement team trying to take a length measurement…

A: Solution: The correct option to the above given question is "option a". i.e Horizontal error

Q: The sides of a closed figur

A: Accuracy ratio is the ratio of the error of the measurement to the distance measured. Accuracy…

Q: What is the result when the sum of the two values does not equal 360°?

A: Compass is used by surveyors to determine the direction of point or line. Compass points to magnetic…

Q: What are the disadvantages or limitations to the use of dilatometer equipment?

A: The flat plate Dilatometer test (DMT) is an in-situ test device with specific advantages that can be…

Q: Given the angle section provided in the figure, you are required to determine: a) The principle axes…

A:

Q: Describe the benefits of measuring magnitude over intensity of earthquake

A: The impact, size, and strength of an earthquake are commonly expressed by using two types of…

Q: What are the principles of ultrasonic speed measurement?

A: Explaining the ultrasonic speed: Ultrasound waves are defined as waves with a frequency greater than…

Q: An aerial photograph of a terrain having an average elevation of 1400 m is taken at a scale of 1:…

A:

Q: On top of a mountain 100 meters high, Hubert saw and fell in love with a girl who is at the foot of…

A: Tan (theta ) = Opposite side /Adjacent side  Given  Height of hill = 100m  Angle with the horizontal…

Q: 2. An archaeologist took some measurements on the unique mountain he had found. He sets two points X…

A: Given: Distance between X and Y =928 m Angle of elevation of peak of mountain from point X=47 ° 10'…

Q: A 100 m tape weighing 30 N is suspended between the two ends under a standard pull of 180 N. The…

A:

Q: Micrometer caliper have more accurate measurement than Vernier Caliper?

A: The dimensions measured internally, externally and the depth when measured with help of two set of…

Q: Linear measurement can be measured through either direct method, indirect method, or electronic…

A: Well As we know that, In the surveying,Linear measurements can be determined by using any of 3…

Q: What are the differences between the true kinematic and pseudokinematic methods?

A: the kinematic method requires an initilisation process at the beginning of the survey in order to…

Q: 240 N block is set on a 20 degrees inclined plane with a coefficient of friction 0.30. Find  A) The…

A:

Q: Which of the following would produce the greatest error when taping a distance of 100' with a steel…

A: Errors when taping a distance of 100 ft with a steel tape - a) When the tape is pulled with too…

Q: What will be the error in the measurement of dischrage if the error in the measurement of head in a…

A: Given, A 'V' notch, having error in head, dH/H =1%

Q: List the main component in dilatometer instruments

A: Following are the main component in dilatometer instrument.

Q: Describe the basic principles of dilatometer testing

A: Dilatometer test: This is an flat plate dilatometer test we conduct this test as in situ test. The…

Q: Briefly explain the drawback of plate earthling in system earthing.

A: Electrical earthing is the practise of transmitting the quick discharge of electrical energy with…

Q: 57.A camera with a focal length of 20 cm fitted in an aircraft is used for taking vertical aerial…

A: Given data:- the given focal length, f=20 cm =0.2 m

Q: Find qu Via Terzaghi's equatioms: 2m Y = 18.2 KN/m C =15 kym + = 20° D=3 m CirCular Shape %3D

A:

Q: Two towers, A and B, standing horizontal ground, vertically on a

A:

Q: Which of the following options represents the stereoscopic shape of the projections in the ?figure O…

A: Option (A) is the correct answer. By drawing the projecions of the figure we can know the…

Q: The distance measurement method

A: There are several methods available for measuring Horizontal distance. Some of them are:   Chain…

Q: Explain about the flat-blade dilatometer.

A: The Flat-blade Dilatometer test (DMT) is an in-situ testing method to determine the strength and…

Q: A distance of 17.44 m is measured with a tape. During measurement, the other end was discovered to…

A:

Q: An aerial photograph of a terrain having an average elevation of 1400 m is taken at a scale of…

A: Given  Average elevation, h = 1400 m              On a scale = 1  : 7500 The focal length of the…

Q: a. Two points A and B (distance =100m) were nominated at the field and Two points A and B (distance…

A: The staff readings at point A and point B are given in the above table.The leveling instrument is…

Q: explain how to do this and what would be happened in autocad?

A: For the first figure, just use the line command and input the measurement values to draw the entire…

Q: 8. Distances d1, d2, and d3 on a calibration baseline were measured. dz d, The following results…

A: Basic data given: d1 : 95.49 m + 0.03 m d2 : 100.73 m + 0.03 m d1 : 196.18 m + 0.06 m

Q: Pilot training or computer games are examples of simulator types. Select one: True False

A: Pilot training or computer games are examples of simulator types.   This statement is true.

Q: Question A camera with a focal length of 20 cm fitted in an aircraft is used for taking vertical…

A: Given Data- Focal length of the camera = 20 cm. Scale S = 1:8000 The average elevation of the…

Q: Do the measurement using Micrometer Caliper agree with that of the Vernier Caliper from different…

A: The linear dimensions such as diameter, length, and depth are generally measured using the Vernier…

Q: Explain the role & importance of using Piezometer ?

A: Piezometer: It is the instrument that is used to measure the pressure of the groundwater. The role…

Photogrammetry

Photogrammetry is a technology of taking measurements of physical objects present in the environment, using photographs. It includes the process of recording and analyzing a three-dimension image in the two-dimension form. Photogrammetry was invented around 150 years ago in 1851 by Aimé Laussedat, he was also known as the father of photogrammetry, but this method was not in use until 50 years after its invention. This method was first used in Germany by Dr. Albrecht Meydenbauer in 1893 who was the director of the Royal Prussian Photogrammetric institute founded by him.