1
GATE PI 2011
MCQ (Single Correct Answer)
+2
-0.6
Water is flowing through a horizontal pipe of constant diameter and the flow is laminar. If the diameter of the pipe is increased by $$50\% $$ keeping the volume flow rate constant, then the pressure drop in the pipe due to friction will decrease by
A
$$33\% $$
B
$$50\% $$
C
$$70\% $$
D
$$80\% $$
2
GATE PI 2009
MCQ (Single Correct Answer)
+2
-0.6
The pressure drop for laminar flow of a liquid in a smooth pipe at normal temperature and pressure is
A
directly proportional to density
B
inversely proportional to density
C
independent of density
D
proportional to (density)$$\,{}^{0.75}$$
3
GATE PI 2008
MCQ (Single Correct Answer)
+2
-0.6
Two pipes of uniform section but different diameters carry water at the same volumetric flow rate. Water properties are the same in the two pipes. The Reynolds number, based on the pipe diameter,
A
is the same in the both pipes
B
is large in the narrow pipe
C
is smaller in the narrower pipe depends on the pipe material
D
depends on the pipe material
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12