Marine electrical technology (function 5)
- What is KVA?
- Where are intrinsically safe devices used and why?
- What is special about Steering gear Overload safety?
- Explain the difference between squirrel cage and slip ring rotor construction?
- Explain the condition for Paralleling of Alternators?
- Explain Types of starter and Describe soft starter?
- What does different position of the synchroscope needle mean; what is the difference between 6 o clock and 12 clock?
- What is dielectric strength where it is used?
- Why do we close the switch at 11 o'clock and not at 12 o' clock?
- What is electro magnetic couple?
- Why is a Megger used for insulation test and not a multi meter?
- How can you reverse the direction of AC motor and how can you do the same for DC motor?
- What are the safeties on MSB?
- What is synchroscope?
- When does Reverse power flow?
- What is the harm if reverse power flows?
- How is the protection against reverse power given?
- How do you test reverse power trip?
- What is the full form of ACB?
- If you press the ACB Close button on an idle generator what will happen?
- What is Under-voltage protection?
- What is the meaning of preferential trip? Why is it provided?
- What is the purpose of the earth fault indication on the switch board?
- If you get an earth fault alarm what will you do?
- What is Direct Current?
- What is alternating current?
- What is meant by phase in AC?
- Is there phase in DC?
- Why is DC not much in use now?
- Where are you likely to see it used?
- What does three-phase current mean?
- What is rms value?
- What is the meaning of power factor?
- What is the usual value you see onboard?
- What is the best value possible?
- What is the benefit of improving power factor?
- How can it be improved?
- What is the meaning of saying I and V are in phase?
- What is the difference between KW, KVA and KVAR?
- Why are motor ratings given in KW and that of alternator and transformer given in KVA?
- Where does reactive power go?
- What is a semi conductor?
- What is doping?
- What happens to insulation when temperature rises?
- What happens to resistance of conductors when temperature rises
- What is an induction motor?
- What is "slip"?
- What is a synchronous motor?
- Where is it used?
- How do you use a multimeter?
- What is an AVO meter?
- How do you check continuity?
- What limits the electrical load?
- What is the voltage used in a meggar?
- How does current flow during welding?
- What do we use for welding on ships? AC or DC?
- What is the voltage?
- What is the voltage used for ignition in boilers/incinerators etc.?
- Why is it different from that for welding?
- Does current flow through hull during welding?
- If so why don't you get a shock?
- What is safe voltage to prevent shock?
- What is the meaning of earthing in a ship?
- What is the meaning of Star winding/ Delta winding?
- Is the ship's alternator Star wound or Delta wound?
- What is the meaning of ACB, MCCB, NFB?
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