GATE XE 2020 Paper 1 — page 13

Complete GATE XE 2020 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 37–39 of 175. Imported answers require review unless explicitly marked reviewed.

Paper practice 175 questionsPage 13 of 59

Water flows at an average velocity,

of 10 m/s through a horizontal smooth tube of diameter,

5 cm. The friction factor,

is 0.02. Head loss is obtained using Darcy-Weisbach relation

. The fluid pressure,

measured at various stations are reported in the table below. The length of the pipe,

between station 0 and station 6 is 6 m.

Station	0	1	2	3	4	5	6
, kPa	304	273	255	240	226	213	-

If acceleration due to gravity, g = 10 m/s

and density of water =1000 kg/m

, then the fluid pressure at station 6 is ______ kPa (rounded off to one decimal place)

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A sphere model of 10 cm diameter is tested in water flowing at 2 m/s. The drag force is measured as 5 N. Prototype of 1.5 m in diameter is tested in air with dynamic similarity conditions. (Density of water is 1000 kg/m

, density of air is 1.2 kg/m

, viscosity of water is 0.001 Ns/m

and viscosity of air is 1.78 x 10

Ns/m

Drag force experienced by the prototype is ______ N (rounded off to two decimal places).

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A liquid of viscosity 1.74 x 10

Ns/m

is flowing through a horizontal capillary tube of diameter 0.5 mm. The flow in the tube is steady, incompressible and fully developed laminar flow. The pressure drop across two locations spaced 1 m apart in the tube is 1.0 MPa.

The flow rate in the tube ______ mm

/s.

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2020 · Paper 1

Question 16

Question 17

Question 18