Hydraulic couplings will transmit torque equal to the input torque by means of energy changes in a rotating vortex of liquid. For the vortices to form there must be __________.

Question

Accepted Answer

slip between the impeller and runner

Answer

less than 2 percent slip between the impeller and runner

Answer

axial thrust generated by the runner pinion shaft

Answer

momentary torsional vibration transmitted by the driving impeller

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