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explain the critical flowcritical flow occurs where the flow depth is at the critical depth one location in an open channel is where the flow is
what is froude numberused to determine if the flow is rapid critical or tranquil fr 1 critical flow fr lt 1 subcritical flow fr gt 1
define the alternate depthsin open channels two alternate depths of flow have the same energy for the same flow rate as shown in the figure the
define the equations for a contracted rectangular weirif the rectangular weir is a contracted weir and the flow is restricted from passing freely
explain the equation for a suppressed rectangular weir if the approach velocity is negligible velocity head can be excluded and the equation becomes
explain the suppressed rectangular weirif the length of the weir b equals the width of the channel ie the flow is not
explain the contracted rectangular weirweir plate has sides which extend above the maximum water surface directing the flow through an opening b
define the rectangular weirssometimes referred to as sharp crested weirs if the top edge of the weir plate is
define the approach velocitytypical problems have negligible approach velocity v1 qa where a the cross-sectional area of flow in the channel
explain flow measurement with weirs fixed plates positioned vertically in an open channel over which flow is directed through an opening the opening
explain the normal depth equation the equation is derived from the chezy-manning equation as written below it determines the diameter of a circular
define circular channels flowing partially fulltwo sets of curved lines on the circular channel ratios figure discharge qqfull and velocity
determine the head loss due to friction using the darcy-weisbach equation the water is pumped at 30 gallons per minute has a temperature of 60 degf
minor losses using th method of loss coefficientsone method of calculating the energy loss as a result of fluid flowing through a device or fitting
determine the flow velocity in 2000 ft of 8 inch diameter piping flowing full the energy lost in piping is 54 ft use nominal pipe diameter and c
determine the loss of fluid energy as 310 gallons per minute gpm of water flows through 1000 ft of 4 inch schedule-40 welded and seamless steel pipe
why the primary bushing of 7970138 distribution transformer blown up when connected wye on a 138 kv
if a high resolution emcoder is used for position control will the number of pole count in the dc motor be matter what is the requirement for the dc
dear engineer i have an aluminum tube6061 fixed at one end cantilever beam the length is 180 and the load on the other end is 150 lbs
determine the total head and total pressure of water flowing at in a pipe which has the following dataflow 2500 gpm elevation 30 ft pressure 40
the head energy loss in the piping system between points 1 and 7 is the most nearlysolution 3 ft the difference between point 1 and point 7 10 fnoft
define hydraulic grade line hglgraph of the sum of the pressure and potential energies at a position along a pipe or open channel the difference
explain energy grade line eglgraph of the sum of the potential pressure and kinetic energies along a pipe or open channel energies are plotted along
calculate the diameter of copper wire of length 100 metres used as winding material in a transformer such that the resistance of the whole winding is
a 6 v 25 ma relay is connected in the output stage of a transistor the coil is made of aluminium having alpha 0004 the resistance of the coil