#1. On an axial flow, dual compressor turbofan engine, the fan turns the same speed as the
High Pressure Compressor
Low Pressure Turbine
High Pressure Turbine
#2. A turbo jet engine gives
Small acceleration to a large mass of air
Large acceleration to a small mass of air
Large acceleration to a large weight of air
#3. As subsonic air flows through a convergent nozzle, the velocity
#4. Bleed valves are normally spring loaded to the
#5. ............reduces the temperature and the thermal expansion around the HP and LP turbine
FCOC (Fuel-Cooled Oil Cooler)
Handling Bleed Valve
Active Clearance Control
#6. VBV's (Variable Bleed Valves) are
Open when the engine decelerates or at low speed.
Close when the engine decelerates or at low speed.
Open when the engine decelerates or at high speed.
#7. Ignition Exciters input and output voltages are
115 V / 26 000 V
28 V / 220 V
28 V / 26 000 V
#8. Operating sequence of components at engine start
#9. Engine Pressure Ratio
Compressor inlet/Turbine inlet
Engine outlet/Engine inlet
Engine inlet/Turbine outlet
#10. If fire handle is released, LP fuel valve .........