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The direction of the magnetic meridian is established at each traverse station and the direction of the line is determined with reference to the magnetic meridian. This method of traversing is called
- a)fast needle method
- b)loose needle method
- c)bearing method
- d)fixed needle method
Correct answer is option 'B'. Can you explain this answer?
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The direction of the magnetic meridian is established at each traverse...
In the loose needle method, the direction of the magnetic meridian is established at each traverse station and the direction of the line is determined with reference to the magnetic meridian. In other words, the magnetic bearing of each line is determined directly. A theodolite fitted with a compass is used for determining the magnetic bearing of the traverse line. The loose needle method is also known as free needle method.
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The direction of the magnetic meridian is established at each traverse...
Explanation:
Traversing is a method of surveying in which a series of connected lines are measured along with the horizontal angles and vertical angles between them. The direction of the magnetic meridian is established at each traverse station and the direction of the line is determined with reference to the magnetic meridian. This method of traversing is called the loose needle method.
The loose needle method is also known as the free needle method, and it involves the use of a compass with a movable needle. The needle is allowed to swing freely, and the direction of the magnetic meridian is established by taking the mean of several readings. Once the magnetic meridian is established, the direction of the line is determined by measuring the horizontal angle between the line and the magnetic meridian.
The loose needle method is widely used for traversing in areas where there is no magnetic interference. However, it is not suitable for use in areas where there is a lot of magnetic interference, such as near power lines or substations.
Advantages of the Loose Needle Method:
- Easy to use and requires minimal equipment
- Suitable for use in areas with low magnetic interference
- Provides accurate results if the magnetic meridian is established correctly
Disadvantages of the Loose Needle Method:
- Not suitable for use in areas with high magnetic interference
- Can be affected by local attraction, which can lead to inaccurate results
- Requires careful handling to avoid damage to the compass needle
Traversing is a method of surveying in which a series of connected lines are measured along with the horizontal angles and vertical angles between them. The direction of the magnetic meridian is established at each traverse station and the direction of the line is determined with reference to the magnetic meridian. This method of traversing is called the loose needle method.
The loose needle method is also known as the free needle method, and it involves the use of a compass with a movable needle. The needle is allowed to swing freely, and the direction of the magnetic meridian is established by taking the mean of several readings. Once the magnetic meridian is established, the direction of the line is determined by measuring the horizontal angle between the line and the magnetic meridian.
The loose needle method is widely used for traversing in areas where there is no magnetic interference. However, it is not suitable for use in areas where there is a lot of magnetic interference, such as near power lines or substations.
Advantages of the Loose Needle Method:
- Easy to use and requires minimal equipment
- Suitable for use in areas with low magnetic interference
- Provides accurate results if the magnetic meridian is established correctly
Disadvantages of the Loose Needle Method:
- Not suitable for use in areas with high magnetic interference
- Can be affected by local attraction, which can lead to inaccurate results
- Requires careful handling to avoid damage to the compass needle
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The direction of the magnetic meridian is established at each traverse station and the direction of the line is determined with reference to the magnetic meridian. This method of traversing is calleda)fast needle methodb)loose needle methodc)bearing methodd)fixed needle methodCorrect answer is option 'B'. Can you explain this answer?
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