Civil Engineering - Surveying - Discussion
Discussion Forum : Surveying - Section 6 (Q.No. 30)
30.
The magnetic bearing of a line is 32° and the magnetic declination is 10° 15' W. The true bearing is
Discussion:
22 comments Page 1 of 3.
TSKD said:
7 years ago
MD = MB - TB.
10'15" = 32' - TB
-21'45" = -TB
Hence, TB = ANS "A".
10'15" = 32' - TB
-21'45" = -TB
Hence, TB = ANS "A".
(2)
Shubham Umak said:
7 years ago
TB=MB+MD (if deflection toward east).
TB=MB-MD (if deflection toward west).
In this problem;
Given: MB=32degree.
And
MD = 10degree and 15 minutes (west).
Therefore;
TB=MB-MD{because deflection in west side is given that's why we take it negative).
TB=32'-10'15' = 21'45'.
Hence answer A is correct.
TB=MB-MD (if deflection toward west).
In this problem;
Given: MB=32degree.
And
MD = 10degree and 15 minutes (west).
Therefore;
TB=MB-MD{because deflection in west side is given that's why we take it negative).
TB=32'-10'15' = 21'45'.
Hence answer A is correct.
(2)
Amol said:
10 years ago
60 - 15 = 45 degree.
31 - 10 = 21 degree.
Total = 21 degree 45 minute.
31 - 10 = 21 degree.
Total = 21 degree 45 minute.
(1)
Fakhar Naveed said:
2 years ago
TRUE BEARING = MAGNETIC BEARING - MAGNECTIC DEC.
TB = 32' - 10'15' = 21'45'.
TB = 32' - 10'15' = 21'45'.
(1)
Nagender thakur said:
7 years ago
B is the right answer.
Manoj said:
1 decade ago
The magnetic declination W is always -ve so just subtract 32 Degree -10degree 15 minute= 21 degree 45 minute.
Rohan said:
6 years ago
I know A is the correct answer but will someone explain the solution without any misinformation!?
Mayur said:
6 years ago
A is the final and correct answer.
Nbn said:
6 years ago
magnetic meridian is measured from magnetic meridian i.e 10d15m west of true meridian (north). Hence it should be deducted. and the answer is correct
Amit said:
9 years ago
@Anmol.
60-15 = 45 minutes? Explain it.
60-15 = 45 minutes? Explain it.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers