Velocity of jet of water travelling out of opening in a tank filled with water is proportional to____ ?
A. h3/1.
B. V/T
C. h2
D. All of them
Hydraulics and Fluid mechanics
Hydraulics and fluid mechanics MCQs with answers and explanations for civil engineering students. Fluid mechanics and hydraulic machines MCQs for civil engineering exams. Fluid mechanics & hydraulic machines questions with answers for competitive exams.
A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury?
A. 0.515
B. 0.5
C. 0.3
D. All of them
A streamline is defined as the line _____ ?
A. of equal yelocity in a flow
B. along which the pressure drop is uniform
C. parallel to central axis flow
D. parallel to outer surface of pipe
General energy equation holds for _____ ?
A. turbulent flow
B. laminar flow
C. steady flow
D. non-uniform flow
In order that flow takes place between two points in a pipeline, the differential pressure between thes^ points must be more than _____ ?
A. surface friction
B. frictional force
C. viscosity
D. All of them
Pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to _____ ?
A. 91Pa
B. 98,100 Pa
C. 1 Pa
D. 9810 Pa
For pipes, turbulent flow occurs when Reynolds number is ____ ?
A. more than 4000
B. less than 4000
C. less than 2000
D. between 2000 and 4000
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. 160 kg
B. 1060 kg
C. 10 kg
D. 100 kg
Bernoulli equation deals with the law of conservation of _____ ?
A. momentum
B. force
C. mass
D. energy
Cavitation is caused by _____ ?
A. high pressure
B. low viscosity
C. high velocity
D. low pressure