ITMC Mechanical Systems & Equipment Maintenance 5

Question 1

A technician notices a bright, polished contact band on only one side of a V-belt in a drive system. This indicates:

Accepted Answer

Sheave grooves are misaligned

Answer

One-sided contact wear indicates sheave misalignment, causing the belt to run against only one groove wall.

Question 2

The purpose of a torque limiter (slip clutch) in a power transmission system is to:

Accepted Answer

Disconnect the drive when torque exceeds a preset limit to protect equipment

Answer

A torque limiter slips or disconnects when transmitted torque exceeds its set point, protecting downstream components from overload damage.

Question 3

When performing a precision shaft alignment using dial indicators, a reading that changes as the shaft is rotated indicates:

Accepted Answer

Shaft runout or coupling eccentricity

Answer

A varying dial indicator reading during shaft rotation indicates shaft runout, bent shaft, or an eccentric coupling hub.

Question 4

Which type of preventive maintenance task is MOST effective at detecting early-stage bearing failure?

Accepted Answer

Vibration analysis using an accelerometer

Answer

Vibration analysis detects bearing defect frequencies (BPFO, BPFI, BSF) long before failure becomes visible or audible.

Question 5

What is the recommended action when a technician discovers 'soft foot' during a machinery alignment procedure?

Accepted Answer

Correct the soft foot condition by shimming the affected machine foot before aligning

Answer

Soft foot must be corrected before alignment because it causes the machine frame to distort when bolts are tightened, invalidating alignment readings.

(ITMC) Industrial Technology Maintenance Certification Practice Test

(ITMC) Industrial Technology Maintenance Certification Practice Test

ITMC Mechanical Systems & Equipment Maintenance 5