A device used to determine the specific gravity of a liquid.

A device used for measuring intensities of pressure exerted by the atmosphere.

A device used to measure pressure heads in pipes where the liquid is in motion.

A tube usually bet in the form of a U, containing a liquid of known specific gravity, the surface of which moves proportionally to changes of pressure. This device is capable of measuring gage pressure using the open type with an atmospheric surface on one leg and the differential type of capable of measuring only difference of pressure.

If a reservoir having a large cross-sectional area compared to the area of the tube is introduced into a one leg of the manometer, the change in liquid level in that leg is held to a small or negligible amount and the pressure is. indicated approximately by the height of the liquid in the other leg, which measures the pressure head at the contact level in the reservoir, this device used to measure the pressure head is called:

Because of the raised water level on the upstream face of a dam, there is a tendency for the water to seep under the dam and escape at the lower level on the downstream side. In as much as this seepage is under pressure, it exerts what is commonly called:.

One way of expressing fluid velocity which focus on a certain point in space and consider the motion of fluid particles that pass that point as time goes on. The fluid particle velocity depends on the point in space and time. This is called:

Whenever flow occurs around a body, part of it will go to one side and part to the other side. The streamline that follows the flow division (that divides on the upstream side of the body and joins again on the downstream side is called the dividing streamline. Also at the point of division the velocity will be zero. This point is called:

If the average velocity at every cross-section is the same in any length or reach of stream, the flow is said to be:

In a steady flow in any length of the stream where changes of cross-section and velocity occur, the flow is said to be:

When at any instant, the number of particles passing every cross-section of the stream is the same, the flow is said to be:

The product of the actual or potential flow Q -(m^3/s) and each cu.units of fluid weighs yw, the weight of fluid which will pass at any point per second is Qyw (Newtons) and the total energy at any point in the stream is E N.m. per N of fluid is called:

An instrument which is used to measure discharge through pipes is known as:

A fluid in motion suffers a frictional loss, which is an expenditure of energy required to overcome resistance to flow. The expended energy is transformed into heat. After being so transform it cannot, through the ordinary process of nature, be reconverted into any useful forms of energy contained in a flowing fluid, this is referred to as:

A tube with square-cornered entrance and a length of about 2:5 times its diameter is called:

A tube having a circular sections, which are frustum of cones with the larger end adjacent to the reservoir are called:

Another name for a diverging tube.

Tubes having their ends projecting into a reservoir is known as:

A special case of the re-entrant tube, consisting of a thin tube projecting into the reservoir about one meter, is used to prove that the coefficient of contraction for such a tube under ideal conditions is 0.50 using the pressure-momentum theory.

An overflow structure built across an open channel for the purpose of measuring the flow.

The flow over a weir may be either free or submerged. If the water surface downstream from the weir is lower than the crest, the flow is free, if this downstream surface is higher. than the crest, the weir is submerged. The overfalling stream is called the:"

In a standard weir, there is a downward curvature of the surface of the liquid in the vicinity of the weir, which is called the drop down curve. The vertical distance between the liquid surface and the crest the weir measured far enough upstream to be beyond the drop down curve is called the:

Weirs built with the upstream face of the weir plate is vertical and smooth, the crest level shall be level, and the narrow that the water will not touch it again after the passing the upstream comer, the of the flume shall be vertical and smoottend and a short distance downstream past the weir crest, the pressure under the nappe shall be atmospheric and the approach channel shall be of uniform cross-section for a sufficient distance above the weir ir and the water surface is free of waves or surges is called _______.

If the elevation of the downstream water surface is higher than the crest of a weir, the weir is called:

A conduit flowing partially full are called:

A closed conduit of circular cross-section through which liquids or gases flow.

The depth of water on a circular cross-section of a channel occurs at:

An abrupt rise in water surface which results from retarding water flowing at the lower stage. The change in stage is from a depth less than critical depth to one greater than critical depth.

A body falling freely through a fluid is being acted upon by three vertical forces, its weight, acting downwards, the drag force, acting upward and the buoyant force of the fluid acting upward. If the body falls freely for a sufficient length of time, the sum of the two upward forces may become equal to the weight of the body. In this case, the summation of the vertical forces has become zero and the body has acquired a constant velocity of fall, called _______.

The maximum discharged from a circular cross-section occurs at a little less than full depth. The corresponding depth is equal to: