What terms do you use to define a pump capacity?, Pump motor & quanlity, Pump head and flow rate, Friction loss and friction head, Pump head and motor size, What is velocity head?, Head associated with kinetic energy, Head associated with change in elevation, Head associated with change in gravitational acceleration, Head due to friction losses, What is static head?, Head associated with kinetic energy, Head associated with velocity, Head associated with change in power, Head associated with change in elevation, Which of these are main hydraulic components of a centrifugal pump, Motor, impeller, shaft, suction-discharge ports, Power cable, motor, VSD, oil tank, Pump impeller only, Circuit breakers and pressure gauges, Friction loss is affected by flow rate and diameter of the pipe?, False, True, Major losses are losses in a pipe associated with the length of the straight pipe., False, True, Minor losses are losses associated with change in sections, bends, elbows and fittings, False, True, What is the flow rate of the pump at its shut-off Head, Hmax?, 1/2 of the maximum flow rate, maximum flow rate Qmax, Flow rate = 0, no flow condition, None of the above, What is a Best Efficiency Point in a pump?, The point at which the pump operates at it's lowest flow rate, The condition where the head is the maximum and flow rate is low, The point where the pump is operating at its most stable condition, All of the above, When two identical pumps are connected in parallel, the resulting head will be the addition of both pumps' heads., False, True, We should always aim to operate within the BEP (limited at less than 20% or more than 20% of the BEP)., False, True, Shaft power is power transferred from the motor to the shaft., Flase, True, When two identical pumps are connected in series, the resulting flow rate will be the addition of both pumps' flow rate., False, True, Which of the statement is correct?, We should always design for positive suction head to avoid cavitation , Proper head and flow rate sizing of the pump is critical to ensure best efficiency, prolonging the pump's lifespan and value for money, Minimum length of straight pipe located before the suction intake shall be at least 5 times the diamater of the suction pipe to avoid flow disturbances, All of the above, NPSH (required) obtained from the supplier is at 3.21m. What is the minimum NPSH (available) for the system to operate to avoid cavitation?, 4.5m, 3.21m, 3.0m, None of the above.

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