Practice Test GeeksBCE - Bachelor of Civil Engineering Practice Test
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Hydraulics & Fluid Mechanics Flashcards

6 cards from real BCE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Hydraulics & Fluid Mechanics flashcards as text

  1. What is the condition for critical flow in an open channel?

    Answer: Fr = 1

    Critical flow occurs when the Froude number equals 1, at which point specific energy is at its minimum for a given discharge.

  2. In a pipe network, the Hardy-Cross method is used to solve for which unknown?

    Answer: Flow distribution and head losses

    The Hardy-Cross method is an iterative technique for finding the distribution of flows and head losses that satisfy continuity and energy equations in a pipe network.

  3. Which pump type is most commonly used for water supply in civil engineering applications?

    Answer: Centrifugal pump

    Centrifugal pumps are the most widely used in water supply systems due to their simplicity, reliability, and ability to handle large volumes.

  4. What phenomenon occurs when pressure in a flowing liquid drops below its vapor pressure?

    Answer: Cavitation

    Cavitation occurs when local pressure falls below the vapor pressure of the liquid, causing formation and collapse of vapor bubbles that can damage pump impellers.

  5. The Darcy-Weisbach equation calculates which quantity in pipe flow?

    Answer: Head loss due to friction

    The Darcy-Weisbach equation (hf = f·L/D·V²/2g) calculates the head loss due to friction along a length of pipe.

  6. Which spillway type is designed to automatically maintain a fixed reservoir level by allowing overflow?

    Answer: Ogee spillway

    An ogee spillway is an overflow weir with an S-shaped profile that follows the natural trajectory of flow and automatically passes excess water when the reservoir reaches design level.