Free mock exam
Sensors & Transmitters — Instrumentation Practice
Free topic-focused mock exam: 30 random questions from a pool of 41 on Sensors & Transmitters, 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
- 41
Free, no sign-up. Retake as many times as you like — different questions each time.
Sample questions
01Which type of temperature sensor generally provides the highest accuracy and stability?
- AThermocouple (Type K base-metal)
- BBimetallic strip (dial indicating gauge)
- CRTD (Resistance Temperature Detector)
- DThermistor (NTC encapsulated bead type)
Why: Of these, the platinum RTD gives the best accuracy and long-term stability. Thermocouples cover higher temperatures but are less accurate, thermistors are sensitive but non-linear, and a bimetallic dial is a local indicator only. Take the accuracy figure for a given sensor from its class and datasheet.
02A thermocouple works on the principle of:
- ASeebeck effect (EMF generation)
- BResistance change with temperature
- CCapacitance change
- DThermal expansion
Why: Thermocouples generate an EMF based on the Seebeck effect when there's a temperature difference between the hot and cold junctions.
03What is the most common RTD resistance value at 0°C?
- A120Ω
- B50Ω
- C200Ω
- D100Ω
Why: The Pt100 RTD has a resistance of 100Ω at 0°C and is the most widely used RTD type.
Common questions
Is the Sensors & Transmitters 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.