Electrician Red Seal · Question
A step-down transformer is used to convert 4.8 kV to 600 V for an industrial facility. It has a primary winding with 2400 turns. How many turns should the secondary winding have?
The voltage ratio of a transformer is directly proportional to its turns ratio. So, V_primary / V_secondary = N_primary / N_secondary. Rearranging to solve for
Start free practice for Electrician Red Seal
150 questions · no signup required · 40 free questions per day
Question: A step-down transformer is used to convert 4.8 kV to 600 V for an industrial facility. It has a primary winding with 2400 turns. How many turns should the secondary winding have?
Answer options:
- 150 turns
- 300 turns ✅ 600 turns
- 1200 turns
Correct answer: 600 turns
Explanation: The voltage ratio of a transformer is directly proportional to its turns ratio. So, V_primary / V_secondary = N_primary / N_secondary. Rearranging to solve for N_secondary: N_secondary = N_primary * (V_secondary / V_primary) = 2400 turns * (600 V / 4800 V) = 2400 turns * (1/8) = 300 turns. The closest and correct answer is 300.
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.