This set of Surveying Multiple Choice Questions & Answers (MCQs) focuses on “Compass – Bearings and Angles”.
1. The direction of a survey line can either be established with relation to _______
a) each other
b) main station
c) arrows
d) tie station
View Answer
Explanation: The direction of a survey line can either be established in relation to each other or with relation to any meridian.
2. What is the direction of line relative to a given meridian?
a) Bearing of a line
b) Length of a line
c) Slope of a line
d) Reciprocal of slope of a line
View Answer
Explanation: Bearing of a line is the direction of line relative to a given meridian. A meridian is any direction such as true meridian, magnetic meridian, arbitrary meridian.
3. Which line passes through true north and true south?
a) True Meridian
b) Magnetic Meridian
c) Arbitrary Meridian
d) Dip
View Answer
Explanation: True Meridian through a point is the line in which a plane passing that point and the north and the south poles, intersects with the surface of the earth. It, thus, passes through the true north and south.
4. Which meridian direction can be established with the help of a magnetic compass?
a) True Meridian
b) Magnetic Meridian
c) Arbitrary Meridian
d) All meridians
View Answer
Explanation: Magnetic meridian through a point in the direction shown by a freely floating and balanced magnetic needle free from all other attractive forces. The direction of magnetic meridian can be established with the help of a magnetic compass.
5. Which meridians are used to determine the relative positions of the lines in a small area?
a) True Meridian
b) Magnetic Meridian
c) Arbitrary Meridian
d) All meridians
View Answer
Explanation: Arbitrary Meridian is any convenient direction towards a permanent and prominent mark or signal, such as a church spire etc. Such meridians are used to determine the relative positions of the lines in a small area.
6. What is the horizontal angle which it makes with the true meridian through one of the extremities of the line?
a) True bearing
b) Magnetic bearing
c) Arbitrary bearing
d) Dip
View Answer
Explanation: True bearing is the horizontal angle which it makes with the true meridian through one of the extremities of the line. True Meridian through a point is the line in which a plane passing that point and the north and the south poles, intersects with the surface of the earth.
7. What is the horizontal angle which it makes with the magnetic meridian through one of the extremities of the line?
a) True bearing
b) Magnetic bearing
c) Arbitrary bearing
d) Dip
View Answer
Explanation: Magnetic bearing is the horizontal angle which it makes with the magnetic meridian through one of the extremities of the line. The direction of magnetic meridian can be established with the help of a magnetic compass.
8. What is the horizontal angle which it makes with the arbitrary meridian through one of the extremities of the line?
a) True bearing
b) Magnetic bearing
c) Arbitrary bearing
d) Dip
View Answer
Explanation: Arbitrary bearing is the horizontal angle which it makes with the arbitrary meridian through one of the extremities of the line. Arbitrary meridians are used to determine the relative positions of the lines in a small area.
9. Convert 22°30′ whole circle bearings to quadrant bearings?
a) 180 – 22°30
b) 22°30
c) 360 – 22°30
d) 270 – 22°30
View Answer
Explanation: Reduced bearing = Whole circle bearing if R.B is less than 90°. Therefore here R.B = W.C.B = N 22°30’E.
10. Convert 122°30′ whole circle bearings to quadrant bearings?
a) 180 – 122°30
b) 122°30
c) 360 – 122°30
d) 270 – 122°30
View Answer
Explanation: Reduced bearing = 180 – Whole circle bearing if R.B is lies between 90° and 180°. Therefore here R.B = W.C.B = N 22°30’E.
Sanfoundry Global Education & Learning Series – Surveying.
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