UPSC Civil Service Exam Questions - Engineering

Q1:

When a particular discharge is flowing in a horizontal pipe, a mercury-water U-tube manometer connccted to the entrance and throat of a venturimeter fitted in the pipe recorded a deflection of 25 cm. If the same discharge flowed through the same pipe kept at an inclination of 45° to the horizontal, then the corresponding deflection recorded by the U-tube manometer will be

A
25 2 cm

B
25/2 cm

C 25/2 cm

D 25 cm

ANS:D - 25 cm

For manometer, reading of a venturimetre remains same for any position of the venturimeter.