Civil Engineering - Surveying - Discussion
Discussion Forum : Surveying - Section 3 (Q.No. 19)
19.
The main plate of a transit is divided into 1080 equal divisions. 60 divisions of the vernier coincide exactly with 59 divisions of the main plate. The transit can read angles accurate upto
Discussion:
23 comments Page 2 of 3.
Gouthami said:
5 years ago
L scale = 360/1080.
= 0.3333333*3600sec.
= 1200sec.
No. Of divisions = 59.
= 1200/59 = 20.33.
Therefore, their least count is 20".
= 0.3333333*3600sec.
= 1200sec.
No. Of divisions = 59.
= 1200/59 = 20.33.
Therefore, their least count is 20".
(1)
Piyush said:
4 years ago
360 deg =1080*M.
M=360/1080 =0.333 deg,
M*59 =60*V,
0.333*59/60 = v,
v=0.327777.
Least count = 0.3333-0.3277 = 0.005552 deg = 19.98 sec.
M=360/1080 =0.333 deg,
M*59 =60*V,
0.333*59/60 = v,
v=0.327777.
Least count = 0.3333-0.3277 = 0.005552 deg = 19.98 sec.
(1)
Sourabh said:
3 years ago
All the explanations are correct assuming:
1 degree = 1hour equivalent.
So, we write 1° 00' 00"= 3600 secs.
1 degree = 1hour equivalent.
So, we write 1° 00' 00"= 3600 secs.
(2)
Vamsi Krishna said:
4 years ago
L.C of the main scale:
1080/360 = 20.
Now, L.C of vernier is;
S/V=(20*60)/60=20".
1080/360 = 20.
Now, L.C of vernier is;
S/V=(20*60)/60=20".
(2)
KrishOM said:
7 years ago
@Shubham Vighne
1200-1080 = 120 seconds not 20 seconds.
1200-1080 = 120 seconds not 20 seconds.
(1)
Suresh Awasthi said:
1 decade ago
1080/60 = 18.
According to the answer sheet answer is 20.
According to the answer sheet answer is 20.
Parth said:
9 years ago
@Ansha.
The total degree of rotation =360°.
The total degree of rotation =360°.
Ansha said:
9 years ago
Please explain clearly from where 360 came.
(1)
Longti said:
4 years ago
Thanks everyone for explaining the answer.
(2)
Dinesh prasad sao said:
9 years ago
(1080/60) - (1080/59)= .3°=20".
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers