Civil Engineering - Surveying - Discussion

10. 

If the whole circle bearing of a line is 270°, its reduced bearing is

[A]. N 90° W
[B]. S 90° W
[C]. W 90°
[D]. 90° W.

Answer: Option C

Explanation:

No answer description available for this question.

Irfan Ahmad Lone said: (Aug 5, 2014)  
The answer is S 90 degree W because it lies in third quadrant.

Nagababu said: (Oct 26, 2015)  
Then it can be of N 90 degree W.

So answer is west 90.

Baloch said: (Nov 28, 2016)  
Yes @Irfan,

It's in 3rd quadrant, so, the answer is [B] i.e. S90°W.

Vinod said: (Mar 27, 2017)  
How, Can anyone explain it?

Rakesh said: (Aug 21, 2017)  
Clear between w90 or 90w?

Santhosh said: (Sep 7, 2017)  
Answer is option B. So 90 degree W.

MLY said: (Dec 21, 2017)  
I think the answer is 90° W.

Dev said: (Jan 16, 2018)  
Answer should be D.

Umashanker said: (Mar 4, 2018)  
Answer should be options B.

Prudhvi said: (Mar 30, 2018)  
What if W.C.B is 359, what is R.B? PLease anyone answer me.

Shiv Kumar said: (Apr 21, 2018)  
I think both A and B is the right answer.

Amexo said: (Jun 17, 2018)  
As per my knowledge, N 90° W is the answer.

Rohit said: (Jul 8, 2018)  
360-270=90.

As the 270 lies on exact quadrant line i.e 270.

So it is W only, not even in third and fourth quadrant.
Hence, option C and D are correct.

Surojit said: (Jul 11, 2018)  
@Prudhvi.

359°= N1°W.
And 181°=S1°W.

Narayan said: (Sep 22, 2018)  
The answer will be 90° west.

Jayraj Khatri said: (Sep 23, 2018)  
Answer is C

If you see from both references N and S than it is same so confusion occurs.
If you write 90 W then it will be same as showing declination.
Due to this, all reason at this point answer is W 90.

Similarly,
0° = N 0,
180° = S 0,
90° = E 90,
270° = W 90.

Abu said: (Mar 21, 2019)  
A is the right answer.

Gorishankar said: (Jun 25, 2019)  
N90W and S90W both are correct.

Binesh said: (Jul 14, 2019)  
You are right, thanks @Jayraj.

Venkat said: (Aug 30, 2019)  
Correct @Jayraj.

Because in reduced bearings are done by surveyor compass.

S = 0.
W = 90.
N = 0.
E = 90.

Suresh Yadav said: (Dec 18, 2019)  
Jayraj you are right bro.

Mohammad said: (Jun 21, 2020)  
Thank you so much @Jayraj.

Kajack said: (Jun 25, 2020)  
The whole circle nearing of a line is 300 degree. It's Quadrantal bearing, right?

Gurjant Singh said: (Jul 23, 2020)  
Good, Thanks @Jayraj.

Umair said: (Aug 21, 2020)  
R.b is equal to WCB in which quadrant? Can anyone tell me?

Adhwik said: (Sep 21, 2020)  
Only in first quadrant @Umair.

Umesh said: (Nov 9, 2020)  
Answer should be (B) because W. C. B is in third quadrant so S 90° W.

Vijet said: (Dec 27, 2020)  
I think, options A) &B) is right. I know that in QB system to measure the angle of any line from north meridian and South meridian.

Mr.Guru said: (Feb 15, 2021)  
The Correct ans is D.

Because 270 means S 270 W.
Because wcb is always respect to N side measure.
The correct format are 90 W.

MrGuru said: (Feb 15, 2021)  
The Correct answer is D.

Because wcb 270 Means QB is S 90 W.
QB is measured by N and S side. That's N 90 W, and S 90 W.
Than 90 W is common.

The answer is 90 W.

Ajju said: (Jul 25, 2022)  
Reduced bearing is always from the closest north or south, but in this case, N90W and S90W both are equidistant so option A and B is rejected. When we don't take reference either from north or south, we have to specify W but with W90 is given in option So we go for option C.

Ratan Kumar said: (Aug 19, 2022)  
Let us assume, WBC=30°, We can say In Reduced bearing is = N 30° E.

Another one assumes WBC=60°, can say in reduced bearing= E 30° N.

So, we can see which quadrant is nearest the angle is first written on a paper then the degree then the direction.

Hence, according to the question, the nearest is exact on W 90°.

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