Maintenance cost of a ______________ pump for a particular duty is the least?

A. 0
B. 1
C. < 1
D. > 1

A. 0.58 to 0.8
B. 0.93 to 0.98
C. 0.2 to 0.3
D. 0.02 to 0.03

A. 25
B. 100
C. 250-300
D. 1000

A. Thickness only
B. Outer diameter only
C. Thickness & outer diameter both
D. Inner diameter

A. Weber
B. Mach
C. Froude
D. Reynold

A. 1500
B. 330
C. 1000
D. 3000