1.17.11 QUIZ 1

NOTE

TO CHECK YOUR PREPARATION ,PLZ WRITE DOWN YOUR SELECTED OPTIONS (A,B,C) ON ROUGH PAGE AND  AT THE END OF QUIZ , VERIFY YOUR SELECTED OPTIONS WITH THE CORRECT OPTIONS GIVEN BELOW

Question Number. 1. Toilet flush motor is protected from overheat by.
Option A. thermal protection.
Option B. water cooling.
Option C. cooling fan on timer switch.


Question Number. 2. What is the purpose of thermal protection on electric toilet motor?.
Option A. Prevent motor overheating and become fire hazard.
Option B. Prevent toilet freezing.
Option C. Stop motor running beyond 10 seconds if timer become unserviceable.


Question Number. 3. Waste water drain masts.
Option A. are not heated.
Option B. are heated using low amperage in the Air and on ground.
Option C. are heated using low amperage with the aircraft on ground only.



Question Number. 4. the seal of the valve is replaceable without draining the tanks.
Option A. the seal of the valve is replaceable without draining the tanks.
Option B. the tank must be de-fuelled.
Option C. the seal is not replaceable, the whole drain assembly must be replaced.


Question Number. 5. Drinking water pipes are prevented from freezing by.
Option A. installation of neoprene foam insulation.
Option B. wrapping the pipes with heated tapes or ribbons.
Option C. placing the pipes adjacent to hot water piping.


Question Number. 6. Toilets are the subject of.
Option A. AWN 83.
Option B. AWN 79.
Option C. AWN 80.


Question Number. 7. Toilet waste valves are.
Option A. not spring loaded.
Option B. spring loaded open.
Option C. spring loaded closed.



Question Number. 8. The heater used on a drain mast would be a.
Option A. induction heater.
Option B. hot air blower.
Option C. ribbon heater.



Question Number. 9. A toilet recirculation fan is unserviceable in flight.
Option A. Close toilet until landing.
Option B. You can use the toilet as the toxic chemical toilet.
Option C. It can be overcome by thermal compensating device.




ABOVE QUESTIONS WITH ANSWERS 
Question Number. 1. Toilet flush motor is protected from overheat by.
Option A. thermal protection.
Option B. water cooling.
Option C. cooling fan on timer switch.
Correct Answer is. thermal protection.
Explanation. AWN 57.


Question Number. 2. What is the purpose of thermal protection on electric toilet motor?.
Option A. Prevent motor overheating and become fire hazard.
Option B. Prevent toilet freezing.
Option C. Stop motor running beyond 10 seconds if timer become unserviceable.
Correct Answer is. Prevent motor overheating and become fire hazard.
Explanation. AWN 57 Para.2.3.


Question Number. 3. Waste water drain masts.
Option A. are not heated.
Option B. are heated using low amperage in the Air and on ground.
Option C. are heated using low amperage with the aircraft on ground only.
Correct Answer is. are heated using low amperage with the aircraft on ground only.
Explanation. 737 AMM ch. 30-71 28VAC on ground and 115VAC in air.


Question Number. 4. the seal of the valve is replaceable without draining the tanks.
Option A. the seal of the valve is replaceable without draining the tanks.
Option B. the tank must be de-fuelled.
Option C. the seal is not replaceable, the whole drain assembly must be replaced.
Correct Answer is. the seal of the valve is replaceable without draining the tanks.
Explanation. NIL.


Question Number. 5. Drinking water pipes are prevented from freezing by.
Option A. installation of neoprene foam insulation.
Option B. wrapping the pipes with heated tapes or ribbons.
Option C. placing the pipes adjacent to hot water piping.
Correct Answer is. wrapping the pipes with heated tapes or ribbons.
Explanation. NIL.


Question Number. 6. Toilets are the subject of.
Option A. AWN 83.
Option B. AWN 79.
Option C. AWN 80.
Correct Answer is. AWN 83.
Explanation. All the AWNs listed have now been removed. Download an old copy from the Forum.


Question Number. 7. Toilet waste valves are.
Option A. not spring loaded.
Option B. spring loaded open.
Option C. spring loaded closed.
Correct Answer is. spring loaded closed.
Explanation. NIL.


Question Number. 8. The heater used on a drain mast would be a.
Option A. induction heater.
Option B. hot air blower.
Option C. ribbon heater.
Correct Answer is. ribbon heater.
Explanation. NIL.


Question Number. 9. A toilet recirculation fan is unserviceable in flight.
Option A. Close toilet until landing.
Option B. You can use the toilet as the toxic chemical toilet.
Option C. It can be overcome by thermal compensating device.
Correct Answer is. Close toilet until landing.
Explanation. IAW B737-400 mmel/ ddg item 38-2, the associate lavatory system may be inop. with lav door secured closed and placard 'INOPERATIVE- DO NOT ENTER'. Toilet recirc fan is part of the lav system.