Civil Engineering MCQs

2965 MCQs  (Page 113 of 297)

Separation of flow occurs when_________________?
A. The pressure intensity reaches a minimum
B. The cross-section of a channel is reduced
C. The boundary layer comes to rest
D. All of the above
The Prartdtl mixing length is_________________?
A. Zero at the pipe wall
B. Maximum at the pipe wall
C. Independent of shear stress
D. None of the above
The wake_______________?
A. Always occurs before a separation point
B. Always occurs after a separation point
C. Is a region of high pressure intensity
D. None of the above
The hydraulic grade line is_________________?
A. Always above the centre line of pipe
B. Never above the energy grade line
C. Always sloping downward in the direction of flow
D. All of the above
In series-pipe problems_______________?
A. The head loss is same through each pipe
B. The discharge is same through each pipe
C. A trial solution is not necessary
D. The discharge through each pipe is added to obtain total discharge