Mechanical Engineering – Pump
Installation Master Study Guide
(50 Q&A) with detailed
explanations
Q1: Which of the following tools should be used to remove a lantern ring?
Answer: Packing hook
Explanation: A packing hook is specifically designed to remove and replace
lantern rings and packing in a stuffing box without damaging the pump
components.
Q2: The two units of measuring liquid pressure are?
Answer: Psi and ft of head
Explanation: Psi (pounds per square inch) and feet of head (ft of head) are
standard units for liquid pressure measurement. Feet of head represents the height
of a liquid column required to create pressure.
Q3: The main purpose of a stuffing box lantern ring is to?
Answer: Improve lubrication of the packing
Explanation: The lantern ring allows water or sealant to flow evenly through the
packing, reducing friction and wear, extending packing life.
Q4: One electrical horsepower equals how many watts?
Answer: 746
, Explanation: Electrical horsepower is a standard conversion: 1 hp = 746 watts,
used to calculate electrical energy needed to drive motors.
Q5: After grouting a baseplate, you should allow the grouting mixture to set
for at least?
Answer: 48 hours
Explanation: Adequate curing time ensures the baseplate is stable and prevents
misalignment or movement of the pump during operation.
Q6: When installing four or more, you should stagger the joints ________°
apart.
Answer: 90°
Explanation: Staggering joints prevents weaknesses along the pump flange or
piping system and distributes stress evenly.
Q7: In general, runout on a shaft should not exceed?
Answer: 0.003 in
Explanation: Excessive shaft runout causes vibration, seal wear, and premature
bearing failure. Maintaining tolerance is critical for pump longevity.
Q8: After installing the new packing, tighten the gland one turn every?
Answer: 15 minutes
Explanation: Gradual tightening allows packing to seat evenly, preventing leaks
and minimizing shaft wear.
Q9: The riser used to vent a system at the discharge side of the pump should
be how many times as long as the diameter of the pipe?
Answer: 5
Explanation: Vent risers must be long enough to prevent backflow and airlock in
the discharge system.
Installation Master Study Guide
(50 Q&A) with detailed
explanations
Q1: Which of the following tools should be used to remove a lantern ring?
Answer: Packing hook
Explanation: A packing hook is specifically designed to remove and replace
lantern rings and packing in a stuffing box without damaging the pump
components.
Q2: The two units of measuring liquid pressure are?
Answer: Psi and ft of head
Explanation: Psi (pounds per square inch) and feet of head (ft of head) are
standard units for liquid pressure measurement. Feet of head represents the height
of a liquid column required to create pressure.
Q3: The main purpose of a stuffing box lantern ring is to?
Answer: Improve lubrication of the packing
Explanation: The lantern ring allows water or sealant to flow evenly through the
packing, reducing friction and wear, extending packing life.
Q4: One electrical horsepower equals how many watts?
Answer: 746
, Explanation: Electrical horsepower is a standard conversion: 1 hp = 746 watts,
used to calculate electrical energy needed to drive motors.
Q5: After grouting a baseplate, you should allow the grouting mixture to set
for at least?
Answer: 48 hours
Explanation: Adequate curing time ensures the baseplate is stable and prevents
misalignment or movement of the pump during operation.
Q6: When installing four or more, you should stagger the joints ________°
apart.
Answer: 90°
Explanation: Staggering joints prevents weaknesses along the pump flange or
piping system and distributes stress evenly.
Q7: In general, runout on a shaft should not exceed?
Answer: 0.003 in
Explanation: Excessive shaft runout causes vibration, seal wear, and premature
bearing failure. Maintaining tolerance is critical for pump longevity.
Q8: After installing the new packing, tighten the gland one turn every?
Answer: 15 minutes
Explanation: Gradual tightening allows packing to seat evenly, preventing leaks
and minimizing shaft wear.
Q9: The riser used to vent a system at the discharge side of the pump should
be how many times as long as the diameter of the pipe?
Answer: 5
Explanation: Vent risers must be long enough to prevent backflow and airlock in
the discharge system.
