Question 1: Centrifugal pumps are good for a wide range of capacities from small to the largest available, however, they are not positive displacement pumps, and with a decrease of discharge head, the discharge flow will: A - Remain constant B - Decrease C - Stop D - Increase _______________________________________________
Question 2: Reciprocating pumps: A - Have continuous discharge flow without pulsations B - Are capable of producing the highest discharge heads C - Can handle abrasive fluids very well D - Have the largest capacities _______________________________________________
Question 3: Vacuum pumps used to remove air and non-condensable gases from the turbine condenser, may be the positive displacement type or the jet type. As its operating medium, the jet type pump uses a jet of high-pressure: A - Air B - Water C - Steam D - Gas _______________________________________________
Question 4: The circulating water pump component labelled "B" is the:
A - Propeller B - Pump body C - Motor D - Coupling _______________________________________________
Question 5: The circulating water pump component labelled "A" is the:
A - Pump body liner B - Coupling C - Motor D - Pump body _______________________________________________
Question 6: In paragraphs PG-61.1 and PG-61.2 of Section I of the ASME Code, it is stated that "boilers having more than 46.4 m2of water heating surface shall have at least two means of feeding water".
A - True B - False _______________________________________________
Question 7: In a service requiring a positive displacement pump that handles only small capacities of clean and clear liquids and requires a high discharge head, the best pump design to select would be the: A - Centrifugal pump B - Vacuum pump C - Rotary pump D - Reciprocating pump _______________________________________________
Question 8: In a system that pumps only distilled water for laboratory use where small quantities of water with high discharge heads are required, the most appropriate type of pump to use is: A - reciprocating B - rotary C - centrifugal D - any of these _______________________________________________
Question 9: Circulating water pumps are required to move large quantities of cooling water through the turbine condenser. They are generally of the: A - Low head, large volume type B - High head, large volume type C - High head, low volume type D - Low head, low volume type _______________________________________________
Question 10: Which of the following describes centrifugal pumps? A - They are positive displacement pumps B - They will not handle dirty or abrasive fluids C - They will not pump against high discharge heads D - The discharge flow will decrease with an increase of discharge head _______________________________________________
Question 11: A spring loaded Kingsbury type thrust bearing is used: A - To locate the rotor of a multistage pump radially B - To locate the rotor of a multistage pump axially during start up and shutdown C - To produce thrust on a multistage pump rotor D - On all types of rotating equipment _______________________________________________
Question 12: Rotary pumps are not positive displacement pumps and consequently the discharge flow will decrease with increase of discharge head. A - True B - False _______________________________________________
Question 13: Forced circulation boilers require one or more pumps to produce the flow through the boiler tubes. This is necessary for boilers operating at and above the critical pressure of above: A - 14 000 kPa B - 14.0 kPa C - 1 400 kPa D - 140 kPa _______________________________________________
Question 14: When deciding which type of pump to use, one must consider: A - Capacity B - Head C - The fluid to be pumped D - All of the above _______________________________________________
Question 15: Rotary pumps: A - Are good for a wide range of capacities B - Can pump heavy or viscous fluids C - Will not pump against high-discharge heads D - Can handle abrasive fluids without damage _______________________________________________
Question 16: If you were designing a system to handle heavy or viscous, non-abrasive fluids where the pumps had to work against high discharge heads, the best type of pump to use in your design would be: A - reciprocating B - rotary C - centrifugal D - any of these _______________________________________________
Question 17: Medium and large-sized plants use centrifugal-type boiler feedwater pumps. In cases where the service pressure exceeds 10 000 kPa, the most common type of pump casing used is the: A - Split casing B - Worm casing C - Volute casing D - Barrel casing _______________________________________________
Question 18: In power plants where low-pressure steam is produced for building heating, a common arrangement is to have a unit that serves as both condensate pump and boiler feedwater pump. The pump design most commonly used for such service is the: A - Centrifugal pump B - Rotary pump C - Regenerative pump D - Reciprocating pump _______________________________________________
Question 19: Rotary pumps are positive displacement pumps, consequently the discharge capacity: A - Increases with an increase in discharge head B - Remains constant regardless of how the discharge head varies C - Decreases with a decrease in discharge head D - Decreases with an increase in discharge head _______________________________________________
Question 20: A unique advantage of steam-driven pumps is that their capacity can be varied from zero to maximum, independent of the: A - Discharge pressure B - Fuel supply C - Intake pressure D - Exhaust pressure _______________________________________________
Question 21: Centrifugal pumps: A - Cannot handle fluids with high solids content B - Will pump against high discharge heads C - Are limited to small capacities D - Are positive displacement pumps _______________________________________________
Question 22: According to PG-61.1 and PG-61.2 of Section I of the ASME Code, a boiler that has more that 500 square feet of water heating surface must have two water supply sources and each source must be capable of supplying water to the boiler at a pressure of __% higher than any safety valve on the boiler. A - 1 B - 3 C - 5 D - 7
