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ATPL 21 AIRCRAFT GENERAL KNOWLEDGE – AIRFRAME AND SYSTEMS |
| 21.11 PROTECTION & DETECTION SMOKE/FIRE |
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1
The function of a feed box in the fuel tank is to
Increase the fuel level at the boost pump location |
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2
In a compensated capacitance type quantity indicating system, the contents gauge of a half-full fuel tank indicates a fuel mass of 8000 lb. if a temperature rise increased the volume of fuel by 5 %, the indicated fuel weight would :
Remain the same. |
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3
Fire precautions to be observed before refuelling are :
All bonding and earthing connections between ground equipment and the aircraft should be made before filler caps are removed. |
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4
The fuel supply system on a jet engine includes a fuel heating device, upstream of the main fuel filter so as to:
Prevent, at low fuel temperature, the risk of ice formation from water contained in the fuel. |
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5
On most transport jet aircraft, the low pressure pumps of the fuel system are supplied with electric power of the following type:
115 v ac |
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6
The fuel crossfeed system:
Allows feeding of any engine from any fuel tank. |
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7
The purpose of the baffles in an aircraft"s integral fuel tank is to:
Restrict the fuel from flowing to the wing tips during abnormal manoeuvre (side slipping...). |
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8
On a transport type aircraft the fuel tank system is vented through:
Ram air scoops on the underside of the wing. |
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9
The types of fuel tanks used on most modern transport aircraft are:
Integral tanks. |
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10
Fuel dump systems are required:
On all transport category aircraft where the maximum take-off w eight (mtow) is significant higher than the maximum landing w eight (mlw). |
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11
The pressurization of tanks is maintained by the fuel:
Vent system. |
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12
On a jet aircraft fuel heaters are :
Located on the engines. |
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13
The automatic fuelling shut off valve:
Stops fuelling as soon as a certain fuel level is reached inside the tank. |
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14
During fuelling the automatic fuelling shut off valves will switch off the fuel supply system when:
The fuel has reached a predetermined volume or mass. |
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15
(for this question use annex 021-980a) the diagram shown in annex represents a jet fuel system. the fuel- flow measurement is carried out :
After high pressure valve (item 4). |
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16
The maximum quantity of fuel that can be dumped with the jettisoning system is:
All up to a defined reserve quantity. |
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17
The purpose of baffle check valves fitted in aircraft fuel tanks is to :
Prevent fuel movement to the wing tip. |
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18
The cross-feed fuel system enables:
The supply of any jet engine from any fuel tank. |
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19
The vapor lock is :
A stoppage in a fuel feeding line caused by a fuel vapor bubble. |
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20
The refueling in a transport jet aircraft is made ...
Through a unique point (an underwing refueling center). |
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21
The fuel system boost pumps are used to :
Avoid the bubbles accumulation and feed the lines with fuel for directing it to the engine at a positive pressure. |
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22
The cross-feed fuel system is used to :
Feed every engine from any fuel tank. |
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23
The fuel system boost pumps are submerged in the fuel ..
To prime the pumps. |
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24
The capacitance type fuel gauging system indicates the fuel quantity by measuring the:
Dielectric change between fuel and air. |
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25
Fuel pumps submerged in the fuel tanks of a multi-engine aircraft are:
Centrifugal low pressure type pumps. |