The equation used to measure the C d ​ (discharge coefficient) of the venturimeter value in the lab is: = 1 − 4 2 Δ ℎ Q= 1−β 4 ​ c d ​ ​ 2gΔh ​ – discharge coefficient c d ​ – discharge coefficient – β– D d ​ A1– Pipe section A2– Restriction area Δ ℎ – head losses Δh– head losses Q– flow rate Ramesh plotted the graph between Q on the y-axis and Δ ℎ Δh ​ on the x-axis and claimed that 1 − 4 2 1−β 4 ​ c d ​ ​ 2g ​ is the slope of the obtained straight line. Suresh plotted the graph between Δ ℎ Δh ​ on the y-axis and Q on the x-axis and claimed that 1 − 4 2 c d ​ 2g ​ 1−β 4 ​ ​ is the slope of the straight line. Who is/are actually correct?