Electrician Red Seal · Question
What is the primary function of a variable frequency drive (VFD) in a motor control system?
A VFD (Variable Frequency Drive) controls the speed and torque of an AC motor by varying the output voltage and frequency. This allows for efficient and precise
Start free practice for Electrician Red Seal
150 questions · no signup required · 40 free questions per day
Question: What is the primary function of a variable frequency drive (VFD) in a motor control system?
Answer options:
- To provide precise voltage regulation to the motor.
- To convert DC power to AC power for specific motor types. ✅ To control motor speed and torque by varying both frequency and voltage.
- To protect the motor from overcurrents.
Correct answer: To control motor speed and torque by varying both frequency and voltage.
Explanation: A VFD (Variable Frequency Drive) controls the speed and torque of an AC motor by varying the output voltage and frequency. This allows for efficient and precise control of motor operation.
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.