Electrician Red Seal · Question
Which of the following describes a thermocouple's principle of operation?
A thermocouple operates based on the Seebeck effect, where a temperature difference across a junction of two dissimilar metals generates a small voltage. This d
Start free practice for Electrician Red Seal
150 questions · no signup required · 40 free questions per day
Question: Which of the following describes a thermocouple's principle of operation?
Answer options:
- Change in resistance with temperature.
- Change in capacitance with temperature. ✅ Voltage generation due to temperature difference across a junction of dissimilar metals.
- Change in inductance with temperature.
Correct answer: Voltage generation due to temperature difference across a junction of dissimilar metals.
Explanation: A thermocouple operates based on the Seebeck effect, where a temperature difference across a junction of two dissimilar metals generates a small voltage. This differentiates it from RTDs (resistance), thermistors (resistance), or capacitive/inductive sensors.
Start free practice for Electrician Red Seal
150 questions · no signup required · 40 free questions per day
More about Electrician Red Seal
Related Questions
- A residential garage is to be wired with a 15 A, 120 V duplex receptacle. According to the Canadian Electrical
- During a renovation of a commercial kitchen, an electrician needs to replace an old single-phase, 240 V, 5 kW
- A commercial kitchen is being renovated, and several new 4 kW, 208 V, single-phase electric ovens are being in
- What is the minimum working space depth required in front of an electrical panel rated 200 A, 120/240 V, locat
- A Red Seal electrician is setting up temporary power for a construction site. The main temporary service is a
- A new industrial facility requires a 600 V, three-phase, 150 A feeder to supply a motor control centre. The co
More for Electrician Red Seal candidates
Practice tests
Question explanations
- A residential garage is to be wired with a 15 A, 120 V duplex receptacle. According to the Canadian Electrical
- During a renovation of a commercial kitchen, an electrician needs to replace an old single-phase, 240 V, 5 kW
- A commercial kitchen is being renovated, and several new 4 kW, 208 V, single-phase electric ovens are being in
- What is the minimum working space depth required in front of an electrical panel rated 200 A, 120/240 V, locat
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Electrician Red Seal Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.