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In order to measure the magnetic bearing of a line, the theodolite should be provided with ______
- a)extra telescope
- b)spirit level
- c)tabular or trough compass
- d)compass
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
In order to measure the magnetic bearing of a line, the theodolite sho...
Magnetic bearing:
The magnetic bearing of a line is the horizontal angel which it makes with the magnetic north.
Since magnetic meridian changes gradually with time and thus magnetic bearing also gets changed with time.
The magnetic bearing is determined from either the prismatic compass or from surveyor’s compass.
In order to measure the magnetic bearing of a line, the theodolite should be provided with a simple compass.
T
rough compass:
It is used in plane table surveying for aligning the plane table along the north direction, not for measuring the angles
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In order to measure the magnetic bearing of a line, the theodolite sho...
Explanation:
In order to measure the magnetic bearing of a line, the theodolite should be provided with a compass. The compass is an essential instrument for measuring magnetic bearings accurately.
Importance of a compass:
A compass is a navigational instrument that consists of a magnetized needle that aligns itself with the Earth's magnetic field. It is used to determine the direction of magnetic north and can be used to measure magnetic bearings. The compass needle points towards magnetic north, which can be compared to the readings on the theodolite to determine the magnetic bearing of a line.
Other options and their explanations:
a) Extra telescope: An extra telescope is not required for measuring magnetic bearings. The primary purpose of a telescope in a theodolite is to observe and measure angles, not magnetic bearings.
b) Spirit level: A spirit level is used to ensure that the theodolite is set up accurately and is level. While it is an important component of a theodolite, it is not directly related to measuring magnetic bearings.
c) Tabular or trough compass: A tabular or trough compass is a type of compass that is used for measuring magnetic bearings. However, it is not the only type of compass that can be used. A standard compass can also be used for this purpose.
Conclusion:
In order to measure the magnetic bearing of a line, the theodolite should be provided with a compass. The compass is an essential instrument that allows for accurate measurements of magnetic bearings. Other options such as an extra telescope, spirit level, or tabular or trough compass are not directly related to measuring magnetic bearings.
In order to measure the magnetic bearing of a line, the theodolite should be provided with a compass. The compass is an essential instrument for measuring magnetic bearings accurately.
Importance of a compass:
A compass is a navigational instrument that consists of a magnetized needle that aligns itself with the Earth's magnetic field. It is used to determine the direction of magnetic north and can be used to measure magnetic bearings. The compass needle points towards magnetic north, which can be compared to the readings on the theodolite to determine the magnetic bearing of a line.
Other options and their explanations:
a) Extra telescope: An extra telescope is not required for measuring magnetic bearings. The primary purpose of a telescope in a theodolite is to observe and measure angles, not magnetic bearings.
b) Spirit level: A spirit level is used to ensure that the theodolite is set up accurately and is level. While it is an important component of a theodolite, it is not directly related to measuring magnetic bearings.
c) Tabular or trough compass: A tabular or trough compass is a type of compass that is used for measuring magnetic bearings. However, it is not the only type of compass that can be used. A standard compass can also be used for this purpose.
Conclusion:
In order to measure the magnetic bearing of a line, the theodolite should be provided with a compass. The compass is an essential instrument that allows for accurate measurements of magnetic bearings. Other options such as an extra telescope, spirit level, or tabular or trough compass are not directly related to measuring magnetic bearings.
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In order to measure the magnetic bearing of a line, the theodolite should be provided with ______a)extra telescopeb)spirit levelc)tabular or trough compassd)compassCorrect answer is option 'D'. Can you explain this answer?
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