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When storing wooden propellers
- store in a dry well ventilated and illuminated location.
- store in a horizontal position.
- wrap in greaseproof paper.
Please write your question here.
What is the area of the trapezium shown?
- 24 cm^2
- 27 cm^2
- Area cannot be calculated from information given.
but after have analized the drowning, the real drowing, after some calculations is different from that...the left side, is inclined whit negative value (le lef side gone to the right of the upper base, like that ________
\
\____________\)
because the right angle is about 62.7° so the long of the base of that triangol is little above 2.1, 7-2.01 =4.99 that means what I have wrote
A compressor shaft rotates on
- sintered bearings
- ball and roller bearings
- plain bearings
What about Needle Roller bearings, those are not balls?
Find the curved surface area of a cylinder diameter 20cm and length 10cm.
- 200 cm^2
- 628 cm^2
- 400 cm^2
Please write your comment here.
What is the ratio of 5 feet to 30 inches?
- 1 : 6
- 5 : 3
- 2 : 1
How can I do that??
Capped nuts are used
- prevent overtightening due to the threaded portion being restricted by the cap.
- to provide a dry torque joint.
- to stop leaks.
need expanation
What is the power dissipated in a 500 ohm resistor with a 3A flow?
- 4.5 kW.
- 1.5 kW.
- 750 kW.
How?
A DC generator armature has 6 poles and is lap wound. The number of brushes required are
- 2.
- 3.
- 6.
Please write your question here.
A right angled triangle has sides 6cm, 8cm and 10 cm. What is the sine of the angle between the 8cm side and the 10 cm side?
- 0.6
- 0.75
- 0.8
How do i go about it
When a propeller is removed, the securing parts are kept with
- all separately in cases.
- the propeller.
- the engine.
WHY NOT KEEP WITH PROPELLER?
Minor surface damage located in a repairable area, but not on the leading or trailing edges of aluminium blades, may be repaired by first
- filing with a half round or flat file.
- sanding and applying a proper filler.
- filing with a riffle file.
now am torn between two answers. previously the system gave me the answer to be sanding and applying a proper filler and now it is saying the right answer is filing with a riffle file.which one is the correct answer?
If the pitot and static pipe lines were cross connected at the instrument panel connection, application of pressure to the pitot head would cause the
- altimeter reading to increase, vertical speed indicator to indicate descent.
- altimeter reading to decrease, vertical speed indicator to indicate descent.
- altimeter reading to decrease, vertical speed indicator to indicate climb.
why?
With a multi-engined aircraft the torque pressure would be
- There is only one gauge for all engines.
- same on all engines.
- similar on all engines.
what is the difference betweeen same and similar?
An abradable lining in the fan case
- prevents fan blade tip rub.
- produces less leakage at tips for anti-ice.
- provides acoustic medium.
how can it reduce noise?
An aluminium alloy bolt may be identified by
- its colour (dyed black).
- the letter A stamped on the head.
- its colour (dyed green).
Really?? not the letter A stamped on the head?
Flux losses in a transformer can be prevented by
- winding the primary on top of the secondary.
- the use of primary shielding.
- laminating the core.
How about 'laminating the core' ?
Two 3 phase generators operating in parallel with different phase and line voltages will be connected in
- Parallel configuration.
- star configuration.
- delta configuration.
why?
The power in a circuit when voltage and resistance is given can be found by
- V*R.
- V*V*R.
- V*V / R.
Can someone do this ?
A fuel or oil fire is defined as a
- class B fire.
- class C fire.
- class A fire.
So What depend to class A fire (and "C")?
Decreasing the field current in a shunt motor will
- decrease speed and increase torque.
- increase speed and increase torque.
- increase speed and decrease torque.
why
On large aircraft, braked wheel assemblies are normally inflated with
- nitrogen.
- nitrogen and not more than 5% of air.
- an argon and CO2 mixture.
refer to JAR 25.733 Tyres (e)
tyres mounted on brakedwheels must be inflated with dry nitrogen or other gases shown to be inert so that the gas mixture inthe tyre does not contain oxygen in excess of 5% by volume..
nitrogen and not more than 5% of air, will be more correct?
What is a controlling factor of turbulence and skin friction?
- Aspect ratio.
- Fineness ratio.
- Countersunk rivets used on skin exterior.
i would argue the correct answer is:
Countersunk rivets used on skin exterior.
Millibar is used to express what kind of pressure?
- Pitot pressure.
- Ambient pressure.
- Barometric pressure.
Why does not millibar express barometric pressure?
The function of the oil in a shock absorber is to
- absorb the landing shock.
- ensure the separator does not bottom.
- damp the rebound.
i would say that the shock absorber has the role of absorbing the shock(ergo the name), at the same time, oil being uncompressible would rather damp the rebound allowed by the nitrogen in the strut.
How would you find the direction of the electron flow in an armature located in a magnetic field?
- Flemings left hand rule.
- Flemings right hand rule.
- Maxwells corkscrew rule.
The question asks 'Fleming's right hand rule', because the direction of the electron is it. If the question wants 'Fleming's left hand rule' as an answer, then not 'the direction of the electron flow', but 'the direction of the motion' is suitable.