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GATE 2019: Fluid Mechanics Quiz 6 (App update required to attempt this test)

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Question 1

The eye of the tornado has a radius of 70m. if the maximum wind velocity is 20m/sec, the velocity at a distance of 200 m radius is______.

Question 2

A flow field which has only convective acceleration is

Question 3

Match List-I with List-II and select the correct answer using the code given below the Lists:
List-I
A) Rotameter
B) Venturi-meter
C) Orifice-meter
D) Flow nozzle
List-II
1) Vena contracta
2) Tapering tube
3) Convergent divergent
4) Bell mouth entry

Question 4

A channel of width 450 mm branches into two sub-channels having width 300 mm and 200 mm as shown in figure. If the volumetric flow rate (taking unit depth) of an incompressible flow through the main channel is 0.9 m³/s and the velocity in the sub-channel of width 200 mm is 3 m/s, the velocity in the sub-channel of width 300 mm is ____ m/s.
Assume both inlet and outlet to be at the same elevation.

Question 5

A liquid of specific gravity 1.5 is discharged from a tank through a siphon whose summit point is 1.2 m above the liquid level in tank. The siphon pipe has a diameter of 0.1 m and it discharges the liquid into atmosphere at 100 kPa. If liquid vapour pressure is 28 kPa, the safe location of outlet is ______ m below the liquid level in the tank.

Question 6

Consider steady, incompressible and irrotational flow through a reducer in a horizontal pipe where the diameter is reduced from 20 cm to 10 cm. The pressure in the 20 cm pipe just upstream of the reducer is 150 kPa. The fluid has a vapour pressure of 50 kPa and a specific weight of 5 kN/m³. Neglecting frictional effects, the maximum discharge (in m³/s) that can pass through the reducer without causing cavitation is

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ESE & GATE ME Fluid Mechanics & Machinery

Nov 9ESE & GATE ME