Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 9 (Q.No. 26)
26.
If the standard meridian is 82°30' E and the standard time at longitude 90°E is known to be 8 hr 30 m, the corresponding local mean time at the place will be
7 hr 00 m
8 hr 00 m
8 hr 30 m
9 hr 00 m
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
1 comments Page 1 of 1.

Vikram SyaL said:   7 years ago
Difference between standard meridian and the longitude of the given place = 90' E - 82'30'' E =7' 30''

Local Mean time = ?

Every 1o E longitude increase in the 4 minutes time also increased

standard meridian is 82'30'' E = 8 hrs 30 min
90' - 82'30'' = 7'30''
7'30''x 4 mins = 30 mins 0 seconds.
Local mean time = Standard time+30 minutes 0 seconds,
= 8 hrs 30 min + 30 min 0 seconds.
= 9hrs, 0 minutes and 0 seconds.
(3)

Post your comments here:

Your comments will be displayed after verification.