⚙️Mechanical Engineering MCQs
Mechanical Engineering MCQs
488 MCQs181
The equation of continuity holds good when the flow____________________?
Ais steady
Bis one dimensional
Cvelocity is uniform at all the cross sections
Dall of the above E. none of the above
182
Pitot tube is used for measurement of_________________?
Apressure
Bflow
Cvelocity
Ddsscharge E. viscosity
183
The velocity of jet of water travelling out of opening in a tank filled with water is proportional to_________________?
Ahead of water (h)
Bh2
CV/T
Dh2 E. h3/1
184
A streamline is defined as the line________________?
Aparallel to central axis flow
Bparallel to outer surface of pipe
Cof equal yelocity in a flow
Dalong which the pressure drop is uniform E. which occurs in all flows
185
Flow occurring in a pipeline when a valve is being opened is________________?
Asteady
Bunsteady
Claminar
Dvortex E. rotational
186
The flow in which the velocity vector is identical in magnitude and direction at every point, for any given instant, is known as________________?
Aone dimensional flow
Buniform flow
Csteady flow
Dturbulent flow E. streamline flow
187
The flow in which each liquid particle has a definite path and their paths do not cross each other is called__________________?
Aone dimensional flow
Buniform flow
Csteady flow
Dturbulent flow E. streamline flow
188
Steady flow occurs when___________________?
Athe direction and magnitude of the velocity at all points are identical
Bthe velocity of successive fluid particles, at any point, is the same at successive periods of time
Cthe magnitude and direction of the velocity do not change from point to point in the fluid
Dthe fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane E. velocity, depth, pressure, etc. change from point to point in the fluid flow
189
Uniform flow occurs when ___________________?
Athe flow is steady
Bthe flow is streamline
Csize and shape of the cross section in a particular length remain constant
Dsize and cross section change uniformly along length E. flow occurs at constant fate
190
A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will_________________?
Aincrease
Bdecrease
Cremain same
Dincrease/decrease depending on depth of immersion E. unpredictable