CCT - Certified Calibration Technician Tools & Equipment Operation 1

Question 1

When zeroing a micrometer before use, the thimble is closed against the anvil and a small discrepancy is noted on the barrel scale. What is the correct corrective action?

Accepted Answer

Clean the anvil and spindle faces, then recheck before adjusting

Answer

Replace the micrometer immediately as it is out of tolerance

Answer

Adjust the barrel using the spanner wrench provided with the instrument

Answer

Add the offset value mentally to all subsequent readings

Question 2

A calibration technician is using an electronic balance to weigh reference masses. The balance is level, warmed up, and recently calibrated, yet readings fluctuate by ±0.05 g. What is the most likely cause?

Accepted Answer

Air currents in the room are disturbing the balance pan

Answer

The balance pan is overloaded beyond its rated capacity

Answer

The internal calibration weight has drifted out of tolerance

Answer

The AC power supply frequency is incompatible with the balance

Question 3

When performing a calibration with an autocollimator, the instrument must be aligned along the optical axis of the reflector. What happens if significant angular misalignment is present?

Accepted Answer

The reflected beam misses the reticle, producing no readable return signal

Answer

The autocollimator overheats and shuts down automatically

Answer

Measurement accuracy improves because a larger reflection area is sampled

Answer

The instrument defaults to a coarser resolution range automatically

Question 4

A technician connects an oscilloscope probe to a calibration signal generator and observes a distorted waveform with significant ringing. The most likely corrective action is to:

Accepted Answer

Adjust the probe's compensation trimmer until the square wave edges are clean

Answer

Increase the generator output amplitude to overcome probe loading

Answer

Replace the oscilloscope with a higher-bandwidth model

Answer

Switch to a 1× probe setting to reduce signal attenuation

Question 5

During pneumatic pressure calibration, a technician notices a slow, steady decline in the reference pressure reading while the system supply valve is closed. This observation most likely indicates:

Accepted Answer

There is a leak in the test circuit connections or tubing

Answer

The reference gauge has a non-linear response at this pressure range

Answer

The pneumatic supply pressure has exceeded the gauge's full-scale rating

Answer

Atmospheric pressure changes are affecting the gauge reference port

Question 6

A technician uses a surface roughness tester (profilometer) to verify a reference artifact. Before traversing the stylus, the instrument should be:

Accepted Answer

Leveled so the traverse direction is horizontal within specification

Answer

Warmed up under full traversal load for 30 minutes

Answer

Zeroed by pressing the stylus firmly onto the reference surface

Answer

Calibrated only after completing the full measurement traverse