Hydraulics and Fluid Mechanics in ME The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to Twice the depth Half the breadth Twice the breadth Half the depth Twice the depth Half the breadth Twice the breadth Half the depth ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice) Q = Cd × a × 2gh Q = (2/3). Cd × a × h Q = (3Cd × a)/√(2h) Q = (Cd × a)/√(2gh) Q = Cd × a × 2gh Q = (2/3). Cd × a × h Q = (3Cd × a)/√(2h) Q = (Cd × a)/√(2gh) ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies Square root of fan speed Directly as fan speed Cube of fan speed Square of fan speed Square root of fan speed Directly as fan speed Cube of fan speed Square of fan speed ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME Runaway speed of a hydraulic turbine is The speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open The speed at which turbine runner will be damaged Full load speed The speed corresponding to maximum overload permissible The speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open The speed at which turbine runner will be damaged Full load speed The speed corresponding to maximum overload permissible ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The efficiency of a Pelton wheel working under constant head ________ with the increase in power. Remain same Increases None of these Decreases Remain same Increases None of these Decreases ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The undershot water wheels are those in which The wheel runs partly by the weight of water and partly by the impulse of water The wheel runs entirely by the impulse of water The wheel runs entirely by the weight of water None of these The wheel runs partly by the weight of water and partly by the impulse of water The wheel runs entirely by the impulse of water The wheel runs entirely by the weight of water None of these ANSWER DOWNLOAD EXAMIANS APP
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