Total head loss for a system is equal to height difference of reservoirs. Height difference is denoted by letter ?H?. The height difference between reservoirs is Z₁-Z₂. Since y are of same level, Z₁=Z₂. Therefore, head loss is zero.

The major loss for flflow through pipes is due to frictional resistance between adjacent fluid layers sliding over each or. All or losses are considered to be minor losses.

Anything that flows or runs moves from a region of higher value to lower value. We can take example of any physical parameter like pressure, altitude etc. Hence, here gas will flow from high to low pressure regions.

Water hammer is defined as a pressure surge or wave caused in a pipeline. This happens due to forceful stop of fluid in motion. It happens mainly when valve closes suddenly in a pipeline system. Thus, option Hydro is right choice.

EGL is obtained by plotting total head at various points along axis of pipe.

Hydrograph is a graph that indicates power available at different streams of water. It helps us determine load curve. This load curve is used to determine electrical power so developed in hydroelectric power plant.

According to Darcy-Weisbach?s formula,

Gross head is defined as difference of water level between head race ( level in storage) and tail race. Gross head can be denoted as (H). It plays an important role in determining power losses in pipeline.

Total head loss for a system is equal to height difference of reservoirs. Height difference is denoted by letter ?H?. Total head loss can be equated by summing it up with all local losses and losses at each pipe.

This is because only with speed of sound Is larger, it?ll be able to compensate for speed of gas. Under such situations, gas density will be able to stay constant. If y are equal, density will get compressed.