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The relation between hydraulic efficiency ($${\eta _{\text{h}}}$$), mechanical efficiency ($${\eta _{\text{m}}}$$) and overall efficiency ($${\eta _{\text{o}}}$$) is
The hydraulic efficiency of a Francis turbine is 90%, the mechanical efficiency is 95% and the volumetric efficiency is assumed to be 100%. Fine the overall efficiency (in %)?
The hydraulic efficiency of a Kaplan turbine is 95%, the mechanical efficiency is 93% and the volumetric efficiency is assumed to be 100%. Fine the overall efficiency (in %)?
According to Naiya̅yikas we ascertain the relation of universal concomitance between x and y :  (A) We can determine the relation only if we can determine the relation of essential identity between x and y   (B) By perceiving that in all cases the presence of x is accompanied by the presence of y  (C) We can determine the relation only if we can determine the relation of cause and effect between x and y  (D) By not perceiving any instance where the presence of x is not accompanied by the presence of y or vice-versa.  Choose the correct answer from the options given below : 
In Pelton turbine hydraulic efficiency is product of mechanical efficiency and overall efficiency.
P. A weir is a hydraulic structure where majority or the entire ponding is achieved by a raised crest and smaller part or nil part by the shutters. Q. A weir is a hydraulic structure that is made by constructing the width of the channel only. R. A barrage is a hydraulic structure that is made by creating a choking condition only. S. A barrage is a hydraulic structure where majority or the entire ponding is achieved by a shutter and smaller part or nil part by the raised crest. Identify the correct statements in the above.
Consider the following statements: 1. Corrasion is a mechanical erosion mechanism of the land, arising from the mechanical grinding of a load of traction from the river to the bed and banks of the river. 2. Hydraulic action is a mechanical process, in which the moving water current flows against the banks and bed of a river. 3. Attrition is fluvial erosion, in which wear and tear of the transported material erode the bed load by itself. Which of the statements given above is/ are correct?  
Which among the following type of relations are considered by Nya̅ya system as necessary relation between middle and major terms? (A) Species - species relation  (B) The causal relation  (C) Member - class relation  (D) Species - genus relation  Choose the correct answer from the options given below :
Various efficiencies of a centrifugal pump are related as (where, ηm = mechanical efficiency ηv = volumetric efficiency. ηma = manometric efficiency ηo = overall efficiency)
Various efficiencies of a centrifugal pump are related as (where, ηm = mechanical efficiency ηv = volumetric efficiency. ηma = manometric efficiency ηo = overall efficiency)