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?