CCT Tools & Equipment Operation 2

Question 1

When using a torque wrench for calibration fixture assembly, which practice ensures measurement integrity?

Accepted Answer

Apply torque in one continuous motion to the specified value

Answer

Applying torque in one smooth, continuous motion prevents binding and ensures the reading reflects the actual torque applied to the fastener.

Question 2

A digital multimeter displays 'OL' when measuring resistance. What does this indicate?

Accepted Answer

The resistance exceeds the selected measurement range

Answer

'OL' (overload) means the measured resistance is beyond the meter's selected range, and a higher range should be selected.

Question 3

Which instrument is most appropriate for verifying the flatness of a granite surface plate used as a calibration reference?

Accepted Answer

Autocollimator

Answer

An autocollimator is the standard tool for measuring angular deviations across a surface plate to verify its flatness specification.

Question 4

When calibrating a pressure gauge using a deadweight tester, the weights must be rotated during the test. Why?

Accepted Answer

To reduce friction effects in the piston-cylinder assembly

Answer

Rotating the weights reduces the effects of static friction between the piston and cylinder, producing a more accurate pressure reference.

Question 5

A thermocouple calibration bath is set to 200°C but reads 198.5°C on the reference probe. What is the bath's temperature error?

Accepted Answer

-1.5°C

Answer

The bath is 1.5°C below the set point (198.5 - 200 = -1.5°C), so the temperature error is -1.5°C.

(CCT) Certified Calibration Technician Practice Test