Aircraft Fuel Systems: DGCA Technical General questions

Question 1

Adjustments may have to be made to an aircraft's engine fuel system if it has been refuelled with JET B instead of its normal JET A1 fuel. These adjustments are to cater for:

Accepted Answer

The change in the specific gravity of the fuel

Answer

The change in the calorific value of the fuel

Answer

The change in the viscosity of the fuel

Answer

The lack of HITEC lubricant in the fuel

Question 2

During fuel jettison, the aircraft is protected against running out of fuel by:

Accepted Answer

Low level float switches

Answer

High level float switches

Answer

Preset jettison quantity switches

Answer

The crew remaining alert

Question 3

A power failure to a capacitive fuel contents system would cause the gauge to:

Accepted Answer

Show full scale deflection low

Answer

Show full scale deflection high

Answer

Fluctuate between high and low readings

Answer

Remain fixed on the last contents noted before failure

Question 4

The aircraft cannot be refuelled while:

Accepted Answer

Passengers are walking through the refuelling zones

Answer

A ground power unit is operating on the ramp

Answer

Passengers are boarding

Answer

The APU is running

Question 5

The disadvantage of refuelling the aircraft to tanks full the night before a departure in the heat of the day is that:

Accepted Answer

The change in the volume of the fuel may cause it to spill through the vent system

Answer

The change in the specific gravity may cause the aircraft to be overweight

Answer

The change in calorific value may reduce engine power to below sufficient

Answer

The rpm governor will be rendered inoperative

Aircraft Fuel Systems: DGCA Technical General questions

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