Free mock exam
Calibration & Testing — Instrumentation Practice
Free topic-focused mock exam: 30 random questions from a pool of 33 on Calibration & Testing, drawn from the wider Instrumentation bank. 35-minute timer, 70% to pass, worked explanation on every question. Use this when you've taken the full mock once and want to drill the topics you got wrong.
- Questions
- 30
- Time limit
- 35 min
- Pass mark
- 70% · 21/30
- Question bank
- 33
Free, no sign-up. Retake as many times as you like — different questions each time.
Sample questions
01What is meant by 'traceability' in calibration?
- AThe ability to locate any instrument on the plant from a database
- BA record showing who carried out each calibration and when
- CThe maximum permissible error stated on the calibration certificate
- DAn unbroken chain of comparisons to national standards
Why: Traceability means the calibration can be traced through an unbroken chain of comparisons back to national standards.
02How should the calibration interval for a process instrument be set?
- AOnly after the instrument has failed
- BTo match the manufacturer's warranty period
- CAnnually in every case, as fixed by law
- DFrom its drift history and the cost of error
Why: An interval is a risk decision. It balances how fast the instrument drifts, shown by its as-found history, against what it costs if the reading is wrong. An instrument that never moves can go longer; one drifting faster than before needs a shorter interval. Repair, replacement or a change of duty resets the history.
03What is 'hysteresis' in instrument calibration?
- AThe deviation of the output from a perfect straight-line ideal response curve
- BThe smallest change in the input that produces a detectable change in output
- CThe difference between upscale and downscale readings at the same input
- DThe gradual drift of the reading away from the true value over a period of time
Why: Hysteresis is the maximum difference between upscale and downscale readings at the same input value.
Common questions
Is the Calibration & Testing mock exam free?
Yes, it is free with no sign-up needed. Questions are pulled at random from a substantial bank, with a worked explanation on every question after you submit.
Can I retake the mock exam?
Yes. Every attempt picks a different random selection and reshuffles the options, so each retake gives you genuinely new questions. No limit on retakes.
Does this count as a qualification?
No. This is independent practice material and does not award a qualification, card or certificate. Where a subject has a formal qualification or card, you gain it through an approved provider.