01. A fluid of kinematic viscosity 0.4 stoke flows through a 8 cm diameter pipe. Maximum
velocity in pipe for laminar flow will be:
(a) less than 1m/sec
(b) 1 m/sec
(c) 1.5 m/sec
(d) 2 m/sec
02. The discharge in m³/sec for laminar flow in a pipe of diameter 40 mm having centerline
velocity of 1.5 m/s is
(a) 3π/50
(b) 3π/2500
(c) 3π / 5000
(d) 3π/10000
03. Flow rate of a fluid (density = 1000 kg/m³) in a small diameter tube is 800 mm³/s. The length
and the diameter of the tube are 2m and 0.5 mm, respectively. The pressure drop in 2 m length
is equal to 2 MPa. The viscosity of the fluid (in milli Pa-s) is_______?
04. In a laminar flow through a circular pipe of diameter 200 mm, the maximum velocity is found
to be 1 m/s. The velocity at a radial distance of 50 mm from the axis of the pipe in m/s
is_________?
05. Oil having a relative density of 0.8 and μ=1 poise is flowing through a pipe of 50 mm dia.
with velocity of 2m/s. Darcy's friction factor for the flow is________?
06. Consider a fully developed laminar flow in a circular pipe. If the diameter of the pipe is
halved while the flow rate and length of the pipe are kept constant, the head loss increases by a
factor_______?
velocity in pipe for laminar flow will be:
(a) less than 1m/sec
(b) 1 m/sec
(c) 1.5 m/sec
(d) 2 m/sec
02. The discharge in m³/sec for laminar flow in a pipe of diameter 40 mm having centerline
velocity of 1.5 m/s is
(a) 3π/50
(b) 3π/2500
(c) 3π / 5000
(d) 3π/10000
03. Flow rate of a fluid (density = 1000 kg/m³) in a small diameter tube is 800 mm³/s. The length
and the diameter of the tube are 2m and 0.5 mm, respectively. The pressure drop in 2 m length
is equal to 2 MPa. The viscosity of the fluid (in milli Pa-s) is_______?
04. In a laminar flow through a circular pipe of diameter 200 mm, the maximum velocity is found
to be 1 m/s. The velocity at a radial distance of 50 mm from the axis of the pipe in m/s
is_________?
05. Oil having a relative density of 0.8 and μ=1 poise is flowing through a pipe of 50 mm dia.
with velocity of 2m/s. Darcy's friction factor for the flow is________?
06. Consider a fully developed laminar flow in a circular pipe. If the diameter of the pipe is
halved while the flow rate and length of the pipe are kept constant, the head loss increases by a
factor_______?
