Bernoulli’s equation is applicable only when
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a. Across a hydraulic jumpi. there is a significant loss of energyii. there is an increase in the flow depthiii. the flow transits from supercritical to subcriticaliv. all of the aboveb. Bernoulli’s equation is applicable only wheni. a flow is unsteadyii. a flow is steady, incompressible and can be treated as inviscidiii. a flow is only incompressible and inviscidiv. None of the abovec. Separation is likely to occuri. only in regions of a flow where there are no solid objectsii. only in flows that are turbulentiii. when viscous stresses can be neglectediv. when the flow is forced to change direction suddenly such as around sharp cornersd. Gauge pressure isi. always positiveii. always negativeiii. equal to the atmospheric pressure everywhere in a flowiv. the difference between the true pressure and a reference pressure, and the reference pressureis usually the atmospheric pressuree. In a static fluid of constant densityi. it is impossible to tell how the pressure varies without knowing if the fluid is a liquid or a gasii. pressure varies quadratically with the depthiii. pressure varies linearly with the depthiv. pressure is constant
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