UPSC Civil Service Exam Questions - Engineering

Q1:

The acceleration components of a fluid particle are denoted as
1. local tangential acceleration.
2. convective tangential acceleration.
3. local normal acceleration.
4. convective normal acceleration.
In a curved nozzle fitted to the end of straight pipeline carrying water under variable head, the acceleration component that are present would include

A 1 and 2

B 3 and 4

C 1, 2 and 4

D 1, 2, 3 and 4

ANS:C - 1, 2 and 4

I think the correct answer is B. Because the curved nozzle streamlines are curved and tangential acceleration can not exist.

Tangential ----> Straight streamlines.

Normal ----> Curved streamline.

Local ----> Change with time.

Convective ----> Change with length.