ETC Mechanical Systems & Equipment Flashcards
6 cards from real ETC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 ETC Mechanical Systems & Equipment flashcards as text
What is the function of a mechanical seal in a centrifugal pump?
Answer: To prevent fluid from leaking along the rotating shaft where it exits the pump casing
A mechanical seal provides a leak-tight seal between the rotating shaft and the stationary pump casing, replacing older packing gland seals.
What does vibration analysis detect in rotating mechanical equipment?
Answer: Imbalance, misalignment, bearing wear, or other mechanical faults in rotating machinery
Vibration analysis monitors the frequency and amplitude of vibration to identify developing mechanical faults like imbalance, misalignment, and bearing deterioration.
What is the purpose of a strainer in a piping system?
Answer: To remove debris and particulates from the fluid to protect downstream equipment
A strainer captures debris, scale, and particulates in flowing fluid before they can damage pumps, valves, meters, and other sensitive equipment.
What does preventive maintenance involve for mechanical equipment?
Answer: Scheduled inspections, lubrication, and servicing performed to prevent equipment failure
Preventive maintenance involves planned scheduled activities like inspection, lubrication, filter changes, and adjustments performed to prevent failures before they occur.
What is the purpose of thermal insulation on mechanical piping?
Answer: To reduce heat gain or loss, preventing condensation and maintaining fluid temperature
Pipe insulation minimizes heat transfer between the fluid and surroundings, conserving energy, preventing condensation on cold pipes, and maintaining process temperatures.
What is the purpose of a backflow preventer in a plumbing system?
Answer: To prevent contaminated water from flowing back into the potable water supply
A backflow preventer stops reverse flow that could contaminate the potable water supply with non-potable water from irrigation, fire suppression, or industrial systems.