MILLWRIGHT TEST #3 QUESTIONS AND ANSWERS 2025
TIR - (ANSWER)Total Indicator Reading
Positive Displacment vs. Centrifugal Pump - (ANSWER)Capacity is constant reguardless of pressure
Flow does not decrease with increasing viscosity
Centrifugal Pump - (ANSWER)Capacity decrease with increase in pressure
Flow rate decrease with viscosity
2 categories of postive displacment pumps - (ANSWER)Reciprocals and Rotary
2 types of pistons - (ANSWER)Single action and Double action
Similar to piston - (ANSWER)pumping element iscylindrical solid move back and forth in a cylindrical
chamber.
Difference to piston - (ANSWER)plunger moves into and withdrawls from the cylindrical chamber.
Diaphragm Pump 3 types of operations - (ANSWER)Mechanical linkage, compressed air, and fluid from a
pulsating, external force.
4 types of rotary Pumps - (ANSWER)External, Internal, Vane, Lobe
External Gear pump ADVANTAGE - (ANSWER)High speed and pressure
External Gear pump Applications - (ANSWER)Chemical and polymer metering, industrial and hydraulic
application.
Internal Gear pump Advantage - (ANSWER)High viscosity liquids
TIR - (ANSWER)Total Indicator Reading
Positive Displacment vs. Centrifugal Pump - (ANSWER)Capacity is constant reguardless of pressure
Flow does not decrease with increasing viscosity
Centrifugal Pump - (ANSWER)Capacity decrease with increase in pressure
Flow rate decrease with viscosity
2 categories of postive displacment pumps - (ANSWER)Reciprocals and Rotary
2 types of pistons - (ANSWER)Single action and Double action
Similar to piston - (ANSWER)pumping element iscylindrical solid move back and forth in a cylindrical
chamber.
Difference to piston - (ANSWER)plunger moves into and withdrawls from the cylindrical chamber.
Diaphragm Pump 3 types of operations - (ANSWER)Mechanical linkage, compressed air, and fluid from a
pulsating, external force.
4 types of rotary Pumps - (ANSWER)External, Internal, Vane, Lobe
External Gear pump ADVANTAGE - (ANSWER)High speed and pressure
External Gear pump Applications - (ANSWER)Chemical and polymer metering, industrial and hydraulic
application.
Internal Gear pump Advantage - (ANSWER)High viscosity liquids
