• # question_answer What is the discharge for laminar flow through a pipe of diameter 40 mm having centre line velocity of 1.5 m/s? A) $\frac{3\pi }{59}\,{{\text{m}}^{\text{3}}}\text{/s}$                B) $\frac{3\pi }{2,500}\,{{\text{m}}^{\text{3}}}\text{/s}$C) $\frac{3\pi }{5000}\,{{\text{m}}^{\text{3}}}\text{/s}$             D) $\frac{3\pi }{10000}\,{{\text{m}}^{\text{3}}}\text{/s}$

$Q={{A}_{v}}=\frac{\pi }{4}{{(0.04)}^{2}}\times 1.5=\frac{3\pi }{5000}\,{{\text{m}}^{\text{3}}}\text{/s}$