A large Roynold number is indication of_________________?
(A) smooth and streamline flow
(B) laminar flow
(C) steady flow
(D) turbulent flow
(D) highly turbulent flow
In order that flow takes place between two points in a pipeline, the differential pressure between thes^ points must be more than_________________?
(A) frictional force
(B) viscosity
(C) surface friction
(D) all of the above
(D) none of the above
The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to________________?
(A) 1 Pa
(B) 91Pa
(C) 981 Pa
(D) 9810 Pa
(D) 98,100 Pa
For pipes, turbulent flow occurs when Reynolds number is_________________?
(A) less than 2000
(B) between 2000 and 4000
(C) more than 4000
(D) less than 4000
(D) none of the above
A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal tc__________________?
(A) 10 kg
(B) 100 kg
(C) 1000 kg
(D) 1 kg
(D) 10,000 kg
Bernoulli equation deals with the law of conservation of____________________?
(A) mass
(B) momentum
(C) energy
(D) work
(D) force
Cavitation is caused by___________________?
(A) high velocity
(B) high pressure
(C) weak material
(D) low pressure
(D) low viscosity
For pipes, laminar flow occurs when Roynolds number is__________________?
(A) less than 2000
(B) between 2000 and 4000
(C) more than 4000
(D) less than 4000
(D) none of the above
The fluid forces considered in the Navier Stokes equation are__________________?
(A) gravity, pressure and viscous
(B) gravity, pressure and turbulent
(C) pressure, viscous and turbulent
(D) gravity, viscous and turbulent
(D) none of the above
All the terms of energy in Bernoulli’s equation have dimension of_______________?
(A) energy
(B) work
(C) mass
(D) length
(D) time