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Mass curve = Cummulative rainfall vs time

Hyetograph = Rainfall intensity vs time

Hydrograph = Discharge vs time

DAD curve = Depth vs area vs duration

An inward flow reaction turbine is Francis turbine.
It combines radial and axial flow.

The amount of moisture present in air expressed as mass per unit volume is absolute humidity.
Absolute humidity is the mass of water vapour divided by a unit volume of air.

Salt concentration can also be measure by the electrical conductivity of irrigation water (ECi).
It is generally measured by Electrical conductivity value.

The water which cannot be extracted by the plants from the soil is called: Hygroscopic water

The canal which is not supposed to do any irrigation is called Main canal

Aquifer is a body of saturated rock or geological formation through which water can easily move (permeability) into wells and streams.
The geological formations which are both porous and permeable hence sufficient quantity of water can be extracted from them.
Aquifers vary in depth and thickness and in general, confined and non-confined aquifers are two main categories of the aquifer.

A ?mod-n? ring counter will require ?n? number of flip-flops connected together to circulate a single data bit providing ?n? different output states.

The decibel gain of a cascaded amplifier is = sum of individual gain.

Because the pointer of the meter is usually a small distance above the scale of the meter, parallax error can occur when the operator attempts to read the scale line that “lines up” with the pointer. To counter this, some meters include a mirror along the markings of the principal scale. The accuracy of the reading from a mirrored scale is improved by positioning one’s head while reading the scale so that the pointer and the reflection of the pointer are aligned; at this point, the operator’s eye must be directly above the pointer and any parallax error has been minimized.

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