Fluid Mechanics
In magnetic flow meters, voltage generation is

Due to the motion of conducting fluid through an externally generated uniform field
Both A and B
Proportional to the fluid velocity
Neither A nor B

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Fluid Mechanics
Steady flow occurs, when the

Rate of the velocity change is constant
Conditions are the same at the adjacent points at any instant
Conditions do not change with time at any point
Conditions change steadily with time

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