Question 1: What does having a suction valve including a normal valving set-up for a typical pump installation allow for? A - relief from the reactionary forces in the piping B - prevention of axial stress on the pump driver rotor C - negative isolation of the pump D - positive isolation of the pump _______________________________________________
Question 2: Before the pump is put into operation, the stuffing boxes require inspection. If the liquid to be pumped is dirty or corrosive, the stuffing boxes need to be sealed with: A - Grease packing B - A neoprene gasket of appropriate size C - A clean sealing liquid from another source D - A caulking compound as recommended by the manufacturer
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Question 3: When the motor and pump shafts are aligned in such a way that the shafts are parallel but their axes are beside each other, the shafts are in: A - Parallel misalignment B - Angular misalignment C - Acute misalignment D - Axial misalignment _______________________________________________
Question 4: Parallel alignment is checked by placing a straight edge across both coupling rims at the top, bottom and sides or by using a dial gauge. Misalignment between the 3 o'clock and 9 o'clock position on the coupling can be corrected by:
A - Removing the jack bolts B - The addition or removal of levelling shims C - Shifting the driver unit sideways on the base plate D - Rotating the two flanges _______________________________________________
Question 5: Allowance must be made for expected temperature changes from the stopped condition to hot running condition. At the normal operating temperature of both components, the driver shaft and pump shaft must be aligned so that they are: A - At tangent B - Touching C - Beside each other D - Co-linear _______________________________________________
Question 6: True or false the following sequence shows the correct order for steps needed to take when replacing pump packing:
1. Shut down, isolate, and drain the pump.
2. Remove the gland adjusting nuts and slide the gland away from the stuffing box and remove old packing
3. Check the condition of the shaft or shaft sleeve and service or replace as required
4. Determine the correct size of the packing to be used
5. Wrap a coil of the correctly sized packing around the pump shaft and cut required number of rings
6. Apply a light coating of oil or grease to each ring and install them one at a time
7. Put the gland into place and compress the packing slightly by tightening the gland nuts.
8. Prime and start up the pump
A - True B - False _______________________________________________
Question 7: In a normal valving set-up, gate and check valves are installed in the discharge line. The check valve is installed: A - Before the gate valve and the pump B - Between the gate valve and the pump C - Downstream of the pump D - Upstream of the gate valve _______________________________________________
Question 8: When an axial flow centrifugal pump is started with the discharge valve shut, ____________________ may be required to start the pump. A - more suction B - more power C - less suction D - less power _______________________________________________
Question 9: Cavitation is caused by: A - Suction velocity too low B - Suction head too high C - Temperature of pumped liquid too low D - Temperature of pumped liquid too high _______________________________________________
Question 10: The type of pump that, under no circumstances, is to be started unless the casing and suction are filled with liquid is a: A - Regenerative pump B - Reciprocating pump C - Rotary pump D - Centrifugal pump _______________________________________________
Question 11: In order to provide for proper pump maintenance, an adequate stock of spare parts is kept on hand. It is usually only necessary to have spare valves and packing on hand for: A - Centrifugal pumps B - Reciprocating pumps C - Rotary pumps D - Regenerative pumps _______________________________________________
Question 12: Before starting a new pump that is equipped with Kingsbury-type thrust bearings, care should be taken to ensure that enough oil is supplied to protect the _________________ . A - thrust shoes B - babbits C - discharge valves D - ejector _______________________________________________
Question 13: The piping should be supported independently from the pump to avoid: A - Excess force on the jacks, chains, or levers used to align the pump and piping flanges B - Stress on the anchors C - Strain on the pump casing D - Stress on the expansion joints _______________________________________________
Question 14:
Before starting a new pump equipped with a Kingsbury-type thrust bearing, it is important to ensure that the oil supply is sufficient to protect the: A - Pump shaft B - Thrust shoes C - Stuffing box D - Sleeve bearing _______________________________________________ Question 15: In order to avoid pump outages, a schedule of preventive maintenance needs to be set up. Semi-annual equipment checks include all of the following except:
A - Renewal of stuffing box packing if necessary B - Measurement of the alignment of the pump and driver C - Balancing disc leakage D - Shaft sleeve inspection _______________________________________________
Question 16: Parallel alignment is checked by placing a straight edge across both coupling rims at the top, bottom, and sides or by using a dial gauge. Misalignment between the 12 o'clock and 6 o'clock position on the coupling can be corrected by: A - Shifting the driver unit sideways on the base plate B - Removing the jack bolts C - The addition or removal of levelling shims D - Rotating the two flanges _______________________________________________
Question 17: When the motor and pump shafts are aligned in such a way that the shafts are in line looking down from the top but are at an angle looking from the side, the shafts are in: A - Angular misalignment B - Axial misalignment C - Parallel misalignment D - Acute misalignment _______________________________________________ Question 18: When replacing pump packing, the first step is: A - Remove the gland adjusting nuts and slide the gland away from the stuffing B - Shutdown, isolate and drain the pump C - Determine the correct size of packing to be used D - Prime the pump _______________________________________________
Question 19:
Good pump maintenance procedures require that sleeve bearings should be dismantled, cleaned and have the oil changed every: A - month B - three months C - six months D - year _______________________________________________
Question 20:What must be installed between a pump and an expansion joint in the attached piping to prevent the transfer of stress to the pump? A - a thrust block B - a stress relief valve C - a foundation block D - an anchor
