Practice Test Geeks(ITMC) Industrial Technology Maintenance Certification Practice Test
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Preventive Maintenance & Troubleshooting Flashcards

7 cards from real ITMC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Preventive Maintenance & Troubleshooting flashcards as text

  1. A vibration analysis on a rotating shaft shows a dominant frequency at exactly 1x running speed. What is the most likely cause?

    Answer: Mass unbalance

    A dominant vibration at 1x running speed (fundamental frequency) is the classic signature of mass unbalance in a rotating component.

  2. Which lubrication method is BEST suited for bearings operating at very high speeds?

    Answer: Oil mist lubrication

    Oil mist lubrication delivers a fine aerosol of oil that minimizes churning losses and heat buildup, making it ideal for high-speed bearings.

  3. During a PM inspection, a technician finds a V-belt deflects more than the manufacturer's specification. What corrective action is required?

    Answer: Increase belt tension

    Excessive deflection indicates the belt is too slack and must be tensioned to the manufacturer's specification to prevent slipping and premature wear.

  4. A hydraulic system is operating at lower pressure than its setpoint even though the pump is running. The FIRST component to inspect is:

    Answer: The pressure relief valve

    A relief valve stuck open or set too low will bleed off pressure, causing the system to operate below setpoint.

  5. What does a trending increase in motor winding insulation resistance readings over several PM intervals indicate?

    Answer: Insulation condition is improving

    Insulation resistance readings that trend upward over time indicate the insulation is drying out and improving in quality.

  6. A pump is experiencing cavitation. Which symptom is MOST characteristic?

    Answer: Rattling or crackling noise with erratic flow

    Cavitation produces a characteristic rattling or crackling sound caused by vapor bubble collapse, often accompanied by erratic flow and reduced performance.

  7. When performing a predictive maintenance thermographic scan, a hot spot is detected on one phase of a three-phase motor contactor. What does this indicate?

    Answer: A loose or high-resistance connection

    A hot spot on one phase of a contactor indicates a loose connection or high contact resistance causing localized resistive heating.