Q1. Explain how the cold room temperature is maintained?
Q2. What do you mean by self-monitoring alarm circuit?
Q3. Out at sea, if there is a black out all through your watch, what is the action will you take?
Q4. After black out the emergency generator comes on; on restoring the main supply we are closing to the circuit breaker of the main generator without bothering regarding synchronizing. Explain how is this possible?
Q5. Explain how does the emergency generator begin automatically?
Q6. If your air bottles are at low pressure and there is a blackout how do you begin the generators?
Q7. What do you mean by shaft generator? Describe with proper diagram.
Q8. Even although the main engine runs at varying speeds, explain how the alternator does maintain the constant frequency?
Q9. Is the alternator connected star or delta?
Q10. Explain why is 440 V used for the motors and 110/220 V used for the lighting?