UPSC Civil Service Exam Questions - Engineering

Q1:

The velocity vector for a steady three-dimensional flow field is described as :
At point (1, 2, 3) what is the approximate value of the magnitude of the velocity?

A 21

B 18

C 10

D 4

ANS:A - 21

√ 324 + 16 + 100 = 21 approx.