71951. The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above the top of the orifice, H2 = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice, and Cd = Coefficient of discharge)
71952. The discharge over a rectangular notch is (where b = Width of notch, and H = Height of liquid, above the sill of the notch)
71953. The discharge through a siphon spillway is
71954. The maximum discharge over a broad crested weir is
71955. In a venturimeter, the velocity of liquid at throat is __________ than at inlet.
71956. The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)
71957. Which of the following is an example of laminar flow?
71958. The pressure less than atmospheric pressure is known as
71959. The total energy line lies over the hydraulic gradient line by an amount equal to the
71960. A structure whose width is __________ the width of the channel, is called a flumed structure.
71961. The maximum efficiency of transmission through a pipe is
71962. The coefficient of viscosity may be determined by
71963. The stability of a dam is checked for
71964. An ideal fluid is frictionless and incompressible.
71965. A manometer is used to measure
71966. The centre of gravity of the volume of the liquid displaced is called
71967. The coefficient of discharge for an external mouthpiece is
71968. The opposite of “heavy” is :?
71969. A siphon is used to connect two reservoirs at different levels intervened by a high ridge.
71970. A flow in which the volume of a fluid and its density does not change during the flow is called __________ flow.
71971. The loss of head due to an obstruction in a pipe is twice the loss of head at its entrance.
71972. The body will sink down if the force of buoyancy is __________ the weight of the liquid displaced.
71973. If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in
71974. The pressure measured with the help of a piezometer tube is in
71975. The power transmitted through a pipe is (where w = Specific weight in N/m3, and Q = Discharge in m3/s)
71976. In an external mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to 0.89 times the height of the liquid, above the vena contracta.
71977. The weight per unit volume of a liquid at a standard temperature and pressure is called
71978. The centre of buoyancy is the centre of area of the immersed body.
71979. The metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement.
71980. In open channels, the specific energy is the
71981. The Bernoulli's equation is based on the assumption that
71982. Arjuna award is associated with:?
71983. The velocity corresponding to Reynold number of 2800, is called
71984. When the pipes are in series, the total head loss is equal to the sum of the head loss in each pipe.
71985. Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, at right angles to the direction of flow of the liquid is known as lift.
71986. f-block elements are also called?
71987. The discharge over a rectangular weir, considering the velocity of approach, is (where H1 = Total height of water above the weir = H + Ha H = Height of water, over the crest of the weir, and Ha = Height of water, due to velocity of approach)
71988. A flow in which __________ force is dominating over the viscosity is called turbulent flow.
71989. If an incompressible liquid is continuously flowing through a pipe, the quantity of liquid passing per second is different at different sections.
71990. The atmospheric pressure at sea level is
71991. When the pressure intensity at a point is less than the local atmospheric pressure, then the difference of these two pressures is called vacuum pressure.
71992. Reynold's number is the ratio of inertia force to
71993. The unit of dynamic viscosity in S.I. units is
71994. Bulk modulus of a fluid __________ as the pressure increases.
71995. The hydraulic gradient line may be above or below the centre line of the pipe.
71996. A water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of the tank is
71997. The specific gravity has no units.
71998. The depth of water in a channel corresponding to the minimum specific energy is known as critical depth.
71999. The ratio of the inertia force to the gravity force is called Froude number.