Results
Q1. The purpose of a synchronizing bus bar is to:
Correct answer is – enable interconnections to be made between generator bus bars
Q2. Fuses and circuit breakers are fitted:
Correct answer is – in both AC and DC circuits
Q3. Where the aircraft’s main electrical supply is AC, DC requirements are met by:
Correct answer is – TRUS
Q4. In a split bus system using non-paralleled constant frequency alternators as the primary power source:
Correct answer is – essential AC loads are normally supplied from No. 1 AC bus bar via the changeover relay
Q5. In a split bus system using non-paralleled constant frequency alternators as the primary power source, if both alternators fail:
Correct answer is – all non-essential services are lost
Q6. In normal operation, the split bus bar AC system takes its DC supply from:
Correct answer is – two TRUs which are connected together by the isolation relay
Q7. The static inverter in the split bus system supplies:
Correct answer is – the essential AC consumers
Q8. In the split bus system, the AC bus bars:
Correct answer is – are automatically connected via the bus tie breaker if one alternator fails
Q9. With parallel generator operation:
Correct answer is – there are two synchronizing bus bars which are normally kept isolated
Q10. In a parallel alternator operation, should one alternator fail, then:
Correct answer is – the SSB will close allowing the three remaining alternators to share all of the load
Q11. If external power is plugged into an aircraft which utilizes the split bus system of power distribution, then:
Correct answer is – it will supply all the aircraft services
