Hydraulics and fluid mechanics questions with answers
211 multiple-choice questions. Open any question for its answer and explanation.
- The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if
- The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to
- True one-dimensional flow occurs when
- Non uniform flow occurs when
- In a Sutro weir, the discharge is proportional to (where H is head)
- If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its
- Free surface of a liquid tends to contract to the smallest possible area due to force of
- A perfect gas
- For a floating body to be in stable equilibrium, its metacentre should be
- The resultant of all normal pressures acts
- Pressure of the order of 10''' torr can be measured by
- Flow of water in a pipe about 3 meters in diameter can be measured by
- In which of the following the friction drag is generally larger than pressure drag?
- 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
- Fluid is a substance which offers no resistance to change of
- Choose the wrong statement. Alcohol is used in manometer, because
- Alcohol is used in manometers because
- At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be
- An open vessel of water is accelerated up an inclined plane. The free water surface will
- The unit of kinematic viscosity is
- An open cubical tank of 2 m side is filled with water. If the tank is rotated with an acceleration such that half of the water spills out, then the acceleration is equal to
- Mercury is often used in barometer because
- For a floating body to be in equilibrium
- Resultant pressure of the liquid in the case of an immersed body acts through
- Buoyant force is