Fleet Electrical Safety Rules Test(Part-1 Of 4) Electrical Person
(76).jpg "Fleet Electrical Safety Rules Test(Part-1 Of 4) Electrical Person - Quiz")
Have you just covered what is expected from you when it comes to electrical safety? If yes, then I have prepared a series of tests to help you see just how safe you will be when it comes to the field. Below is part one of four tests for an aspiring electrical person. Give it a shot and see just how much you understand. All the best!
- 1.When wiring a modern 13 amp square pin electric plug which colour wire is connected to earth?
- A.
Blue
- B.
Brown
- C.
Yellow/Green
- D.
Black
- 2.IF excessive current flows in a circuit which of the following does not automatically isolateElectrical Competence the circuit?
- A.
The Circuit breaker.
- B.
The thermal overload
- C.
The isolating switch.
- D.
The fuse.
- 3.Which of the following statements about electrical fuses is true?
- A.
Fuses protect circuits and people from excess current automatically.
- B.
When a fuse fails it is necessary to replace it immediately.
- C.
A regularly failing fuse should be replaced with one of a high rating.
- D.
After a fuse has failed it restores the current automatically once the fault has been found
- 4.The charge in a lead acid battery can be measured with which of the following?
- A.
A hydrometer.
- B.
A thermometer.
- C.
An ammeter
- 5.Which of the following would be powered by 440 volts A.C. on a modern ship?
- A.
Alarm panels.
- B.
Pumps turned by electric motors.
- C.
Emergency generator starter motors.
- D.
Accommodation lighting.
- 6.Behind the main switchboard are copper bars carrying electrical current. These are called
- A.
Transformers.
- B.
Breakers.
- C.
Batteries.
- D.
Bus bars.
- 7.A valve which is operated by an electric circuit is called a:
- A.
Motorized valve.
- B.
Solenoid valve.
- C.
Breaker.
- D.
Thermostatic valve.
- 8.The instrument used to measure electrical insulation is called:
- A.
A megger.
- B.
A motor meter.
- C.
A voltmeter.
- D.
An ammeter
- 9.Watts are a measurement of:
- A.
Electricity flow.
- B.
Electrical power.
- C.
Resistance.
- D.
Electrical pressure.
- 10.When a fuse is rated 8 A, it means :
- A.
It will not work if current is less than 8 A
- B.
It has a resistance of 8 W
- C.
It will work only if current is 8 A
- D.
It will melt if current exceeds 8 A
- 11.What is the purpose of a Tacho- generator?
- A.
To measure revolutions per minute (RPM).
- B.
To measure the direction of shaft rotation.
- C.
To measure the relationship between impedance and frequency.
- D.
To measure impedance.
- 12.Which of the following detectors will you choose for detecting smoke from fire?
- A.
Thermometer
- B.
Thermocouple
- C.
Strain gauge
- D.
Ionization type
- 13.One of the following statements with regards to Portable equipment is not correct:
- A.
It shall be inspected at the earliest opportunity after its arrival on the ship
- B.
It is subject to regular formal inspection
- C.
Its supply must be suitable for the area where it will be used.
- D.
Ship’s Bosun is generally asked to inspect portable electrical equipment.
- 14.The use of compact fluorescent (CFL) lamps is not permitted in the vicinity of marine safety communications equipment. Because:
- A.
They do not produce enough light
- B.
These lamps are only for domestic application not marine use.
- C.
There is a radio interference issue with this light as a result Us Coast Guard has banned the use of CFL.
- D.
These lamps are very expensive
- 15.Fast and accurate assessment of Life &Rescue Boat battery condition can be done:
- A.
By regular testing battery voltage using digital multimeter.
- B.
By carrying out 2 to 3 engine start each week.
- C.
By checking electrolyte level
- D.
By using shell approved battery load tester
- 16.The electrolyte in a charged lead acid battery consists of water and
- A.
Potassium hydroxide.
- B.
Hydrochloric acid
- C.
Acetic acid.
- D.
Sulphuric acid.
- 17.Which of the following duties would NOT be served by primary batteries?
- A.
Hand torches.
- B.
Emergency lighting.
- C.
Low voltage systems such as telephones.
- D.
Emergency generator starting.
- 18.What will you do if you are told to operate unknown mechanical equipment?
- A.
Do not operate the machine, but read the manual before reporting to the head of your department
- B.
Seek advice from your superior before attempting to operate it.
- C.
Ensure that all safety guards and devices are disconnected.
- D.
As time is money, the trial and error method shall be used
- 19.Which group of electrical services are likely to be supplied from an emergency
- A.
Steering gear and alarm system
- B.
Engine room lighting and bow thrusters
- C.
Galley and air conditioning
- D.
Sound powered telephone system
- 20.Regular (at least weekly) testing of the emergency generator must be performed to check:
- A.
Its readiness to perform as specified.
- B.
Its environmental noise factor during emergency fire-drills.
- C.
Its voltage/current characteristics.
- D.
Its compliance with the shipbuilder`s recommendations.
- 21.What precaution is to be taken when the Engineer on Duty is entering an UMS-mode operated engine room due to an alarm or due to a scheduled routine check?
- A.
Leave the UMS selector switch in UMS-mode
- B.
Any of the mentioned alternatives will meet the requirements.
- C.
Switch the UMS selector switch to manual mode and engage the "dead man alarm"
- D.
Switch the UMS selector switch to manual mode only
- 22.Prior to the lunch break, the Engineer on Duty observes that the operating generator set has an output of 90%. With regard to operation of the generator, what is the - most important - assumption(s) for him to check before switching to UMS-mode?
- A.
That all operating parameters of the generator set in operation are normal (e.g. exhaust temperatures, lube oil pressure, cooling water temperature etc.)
- B.
Visually checking the auxiliary engine that there are no leaks or other obvious operating failures
- C.
All parameters as listed under the other alternatives.
- D.
That a secondary auxiliary set is switched to automatic standby mode
- 23.When you make a visit to the emergency diesel generator during your engine room watch, what should you look out for?
- A.
Cooling system fresh water level, oil level in sump tank, preheating temperature of cylinders, charging level of batteries, diesel in stand-by mode.
- B.
That the voltage and the frequency displayed on the emergency switch board is the same as on the main switch board.
- C.
That the steam heater or electrical heater in the emergency diesel room is switched on.
- D.
That the battery charger is not accidentally kept in ON position, that the door of the generator room is always closed behind you.
- 24.What are ideal conditions for taking Megger test readings of a motor or alternator?
- A.
Cooled down to ambient temperature.
- B.
Running.
- C.
Hot after stopping.
- D.
Cooled down to hand-warm.
- 25.If an alternator runs at 900 RPM and delivers AC current at 60 Hz, how many pole pairs has this alternator got?
- A.
Eight
- B.
Two
- C.
Four
- D.
Six
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