Question 8067 of 790 · California General Electrician Exam
What must be done regarding the ventilation of a transformer?
Exactly one answer is correct.
You got of questions right. Here on the question pages nobody remembers which ones you got wrong. The trainer saves your progress and asks the mistakes again until they stick.
Or free: the 10 questions most people get wrong
Show solution
Correct answer to question 8067
- D: Openings may not be blocked, and marked clearances must be kept
Explanation
Section 450.9 requires the heat losses of a transformer to be removed without excessive temperature rise. Ventilating openings must not be obstructed, and the clearances marked on the transformer must be maintained.
More questions: Motors, HVAC, Generators and Transformers
- 8068A 75 kVA dry-type transformer is installed indoors. What is the minimum separation from combustible material without a fire-resistant barrier?
- 8072Oil-insulated transformers installed indoors are generally required to be installed in what?
- 8074Secondary conductors leave a transformer and do not exceed 10 ft in length. What may they terminate in without protection at the secondary terminals?
- 8075Capacitors rated 1000 volts or less must discharge their residual voltage to what level within what time after disconnection?
- 8076What is the minimum ampacity of conductors supplying a capacitor?
- 8078Why are capacitors installed in motor circuits in industrial plants?