COMPETENCE 7 – Maintenance and Repair of Electronics and Electrical Equipment
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#1. As load is added to an AC generator provided with constant field excitation, the prime mover slows down. What immediate effect will this have on frequency and voltage?
Incorrect!
#2. At high discharge rates, why are nickel-cadmium storage batteries superior to lead-acid batteries?
Incorrect!
#3. An electro-magnetic relay is most commonly used for what purpose?
Incorrect!
#4. By what means is the voltage of an operating AC turbo generator raised or lowered?
Incorrect!
#5. By what means does a molded-case circuit breaker provides protection against short circuits?
Incorrect!
#6. By what means is the frequency of an alternator adjusted from the main switchboard?
Incorrect!
#7. By what means is the rotation of a three-phase induction motor reversed?
Incorrect!
#8. Besides voltage and frequency, what other factor must be the same when alternators are operating in parallel?
Incorrect!
#9. An insulation resistance test is performed on a particular piece of electric equipment. In addition to the resistance reading and date of test, what information listed below should be entered in the electrical log?
Incorrect!
#10. By what means is a constant output voltage from an AC generator maintained?
Incorrect!
#11. Capacitance is the property of an electric circuit opposing a change in what value of a circuit?
Incorrect!
#12. Besides voltage regulation, what is a function of the voltage regulators used with AC generators?
Incorrect!
#13. By what means is the division of the reactive kVAR load between paralleled AC generators automatically controlled?
Incorrect!
#14. An increase in which of the listed conditions will increase the speed of a synchronous electric motor?
Incorrect!
#15. By what mechanism does a reverse-power relay prevent AC generator motorization?
Incorrect!
There are 15 questions for the actual examination for Competence 7 for OIC-EW with a passing rate of 70%. This means that you are only allowed to make 4 mistakes.
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