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1 kW is
- 3413 BTU per hour.
- 1.56 HP or 1100 W.
- 4200 BTU per hour.
WHY???
When a square block of material is pushed into a parallelogram, the material is under what stress type?
- Twist.
- Creep.
- Shear.
why?
If a burner was down, in a multi-can system, the engine would tend to
- hang up.
- run up.
- surge.
explain??
The specific gravity of fuel affects
- thrust rating.
- aircraft range.
- engine efficiency.
PLEASE EXPLAIN.
Turboprop engine inlet anti-ice system operates
- continuously.
- cyclically dependant on weather conditions.
- cyclically independent on weather conditions.
turbine engine theoretically has 2 sections the main one operates continuously and the second one operates cyclically to avoid overload of the electric system
The exhaust gas temperature (E.G.T ) indicator on a gas turbine engine provides a relative indication of the
- turbine inlet temperature.
- temperature of the exhaust gases as they pass the exhaust cone.
- exhaust temperature.
The exhaust gas temperature (EGT) is typically defined as the gas temperature at the exit of the turbine
https://www.researchgate.net/publication/266673900_A_Review_of_Exhaust_Gas_Temperature_Sensing_Techniques_for_Modern_Turbine_Engine_Controls#:~:text=The%20exhaust%20gas%20temperature%20%28EGT%29%20is%20typically%20defined,parameter%20for%20optimizing%20fuel%20economy%2C%20diagnosis%2C%20and%20prognosis.
Nozzle guide vanes give a
- pressure increase, velocity decrease.
- pressure increase, velocity increase.
- pressure decrease, velocity increase.
nozzle guide vane are associated with compression section, so they're used to maximise compression performance (they're divergent) by decrease the speed & increasing pressure gain for each stage
An exhaust cone placed aft of the turbine in a jet engine will cause the pressure in the first part of the exhaust duct to
- increase and the velocity to decrease.
- decrease and the velocity to increase.
- increase and the velocity to increase.
The type of duct that forms the exhaust cone will determine what happens with the pressure and temperature. I distinguish 2 types of cone and therefore 2 types of conduit:
1 / convergent - divergent
2 / divergent
In a choked nozzle, velocity increases, and
- density decreases.
- pressure decreases.
- pressure increases.
Doesn't pressure decrease with an increase in velocity?
Upon what quality or characteristic of a lubricating oil is its viscosity index based?
- Its rate of flow through an orifice at a standard temperature.
- Its rate of change in viscosity with temperature change.
- Its resistance to flow at a standard temperature as compared to high grade paraffin base oil at the same temperature.
viscosity is defined as mm^2/s for a determined temperature.
What is the equivalent of this gate?
- = (NOT-A + NOT-B)
- = (NOT-A . NOT-B)
- = NOT-(A.B) + (A)
correct the answer.....
A 4.5 kW electric motor is 90% efficient. How much energy does it use in 20 seconds?
- 4.5 kJ.
- 810 kJ.
- 100 kJ.
can somebody plz solve
Extending a leading edge slat will have what effect on the angle of attack of a wing?
- Increase the angle of attack.
- Decrease the angle of attack.
- No effect on angle of attack.
The effect of the slat is to prolong the lift curve by delaying the
stall until a higher angle of attack. how does it possible that the angle of attack decreases?
Calculate the area of the shape shown:
- 3pi
- 6.75pi
- 17.5pi
Please write your question here.
In a flight director, how are small deviations corrected?
- Pilot input.
- Servo motor.
- Gyro torque.
Why?
Spilled mercury on aluminium
- increases susceptibility to hydrogen embrittlement
- may cause impaired corrosion resistance if left in prolonged contact.
- causes rapid and severe corrosion in prolonged contact.
Why not the third option is correct ???
Aircraft components require overhauls at times stated in the
- maintenance schedule.
- overhaul manual.
- maintenance manual.
Shouldn't it be maintenance schedule since it deals with timings while the manual has maintenance procedures?
Heavy corrosion deposits on clad aluminium alloys should be removed
- mechanically using a pneumatic vibrator.
- chemically by use of trichloroethylene.
- chemically by use of phosphoric acid.
usually, in heavy deposits corrosion, the initial phase is remove the bulk with a brass wire wheel and than use the acid
Maximum repair dimensions for use of microballoons is
- 10mm.
- 20mm.
- 30mm.
why??
If the fabric on a wood/fabric aircraft has lost its strength
- the fabric can be treated with a rejuvenator
- the fabric can be treated with additional coats of the approved type of dope.
- the fabric must be replaced.
anyone can explain??
What is the main purpose of a frise aileron?
- Increase drag on the up going aileron.
- Decrease drag on the up going wing surface.
- Help the pilot overcome aerodynamic hinge loads.
frise aileron produces more drag on up going wing or is it to the up going aileron.little confused..
A single phase circuit has an input voltage of 100V. The current is 10A and the circuit has a power factor of 0.5. The true power is
- 50W.
- 1000W.
- 500W.
Anyone can explain ?
A circuit has 115 V RMS, 2.5A at 60 degrees, what is the power dissipated?
- 79 W.
- 300 VA.
- 143 W.
Anyone can explain ?
The series wound generator`s terminal voltage will, when below saturation
- increase with an increase in load.
- decrease with an increase in load.
- decrease with a decrease in rotational speed.
Anyone can explain ?
An inductor has 1,000 turns of wire and a cross sectional area of 0.001m2. If the core has a permeability of 0.000,001 and the coil is 0.1m. What is the value of the inductor?
- 100microH.
- 100mH.
- 10mH.
Could someone explain this one.