One Liners | GATE 2022 | Fluid Mechanics | part 2

The following is a list of one-liners that can be useful for your preparations for the Fluid Mechanics, Civil Engineering GATE 2022 examination.

1. The equation T= -(dP/dl).r/2 for flow through circular tubes, where T is shear stress at distance r from center, is applicable for both laminar and turbulent flow.
2. A fluid is a substance that can not remain at rest when subjected to a shearing force.
3. One end of a two dimensional water tank has the shape of a quadrant of a circle of radius 2m. When the tank is full, the vertical component of the force per unit length on the curved surface will be 1000.kg.pi.f. (pi = 3.14)
4. If mean velocities at two ends of a stream tube 10 cm apart are 2.5 m/sec and 3 m/sec then convectional tangential acceleration mid-way will be 13.75 m/sec^2.
5. When a particular discharge is flowing in a horizontal pipe, a mercury water U-tube manometer connected to entrance and throat of a Venturi-meter 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 degrees to the horizontal, then the corresponding deflection by the U-tube manometer will be 25 cm.

References (Also the best books for GATE and PSU preparations):

1.  Civil Engineering Objectives by S P Gupta
2. GKP GATE 2022 Guide by GK Publishers
3. Previous 31 Years of Solved GATE Papers by Made Easy