Correct answer: (B) Turbulent-flow tortuous-path/orifice, good quality
Explanation
The emitter relation q=khˣ with x≈0.5 indicates turbulent orifice/tortuous-path behaviour; pressure compensation would require an exponent nearer zero and laminar flow nearer one. CV=0.04 indicates good manufacturing uniformity under the classification used by the paper. Thus B.
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