آزمون فنی و نگهداری هواپیما (Part-66)

1.Locus points plotted equidistant from a central points represent.

1. Acircumference.
2. Bdiameter.
3. Cradius.

2.What is the Lowest Common Multiple of 5; 12; 20.

1. A60.
2. B120.
3. C5.

3.In the following equation what is the y-intercept? 4y = 2x + 8.

1. A2.
2. B4.
3. C8.

1.Refractive index is.

1. Athe speed of light in the medium divided by the speed of light in air.
2. Bthe speed of light in air divided by the speed of light in the medium.
3. Cthe speed of light in air multiplied by the speed of light in the medium.

2.The Steam Point of water is.

1. A0 Kelvin.
2. B373 Kelvin.
3. C273 Kelvin.

3.The number of radians in a semi circle are.

1. Aexactly 3.
2. Bπ.
3. C2π.

1.What polarity do interpoles take in a DC motor?.

1. AEither, provided they lay on the MNA.
2. BThe same as the next main pole ahead in the direction of rotation.
3. CThe same as the next main pole behind in the direction of rotation.

2.The unit of energy is the.

1. AJoule.
2. BWatt.
3. CCoulomb.

3.In a purely resistive AC circuit, the current vector is.

1. A+90° out of phase with the voltage vector.
2. Bin phase with the voltage vector.
3. C-90° out of phase with the voltage vector.

1.In a control synchro the stator current ceases to flow when.

1. Athe CT rotor is at null.
2. Bwhen power is removed.
3. Cwhen the two rotors are aligned.

2.The voltage drop of a silicon diode is.

1. A1 V.
2. B0.7 V.
3. C0.3 V.

3.A differential synchro.

1. Acan be used as either a transmitter or a receiver.
2. Bcan only be used as a receiver.
3. Ccan only be used as a transmitter.

1.ARINC 629, aperiodic mode is used.

1. Afor landing and approach operation.
2. Bfor normal operation.
3. Cfor database loads.

2.As a minimum requirement, when must a cockpit voice recorder start recording?.

1. AFrom the start of the aircraft take off run.
2. BAfter take off when airborne.
3. COn first engine start.

3.In a computer memory device, which one of these has the slowest access time?.

1. Afloppy disk.
2. Bmagnetic tape.
3. C8mm video tape.

1.What is the colour of an AN steel flared-tube fitting?.

1. ABlack.
2. BRed.
3. CBlue.

2.Malleable materials are.

1. Aeasy to forge.
2. Beasy to cast.
3. Chighly ductile.

3.The first step for the coaxial cable to attach to the end fitting is.

1. Ause a tooling hold between the assembly and cable.
2. Bthe outer covering is cut back to expose the braided outer conductors.
3. Cback-off the insulator and connect with conductor.

1.HIRF interference occurs when.

1. Ain use on mid frequencies.
2. Bin use on low frequencies.
3. Cin use on all frequencies.

2.The three electrical checks carried out on aircraft are (1) continuity (2) bonding (3) insulation. What is the order in which they are executed?.

1. A2-3-1.
2. B1-2-3.
3. C2-1-3.

3.When using a heat shrink gun, what should the temperature of the gun be set to?.

1. A100° below the heat shrink temperature.
2. B15° below the heat shrink temperature.
3. C100° above the heat shrink temperature.

1.Stability of an aircraft is.

1. Athe tendency of the aircraft to return to its original trimmed position after having been displaced.
2. Bthe tendency of the aircraft to stall at low airspeed.
3. Cthe ability of the aircraft to rotate about an axis.

2.As the angle of attack decreases, what happens to the centre of pressure?

1. AIt moves rearwards.
2. BCentre of pressure is not affected by angle of attack decrease.
3. CIt moves forward.

3.In the ISA the sea level pressure is taken to be.

1. A14 PSI.
2. B1013.2 mb.
3. C1.013 mb.

1.A perforated ear drum could occur if.

1. Ayou were subjected to intermittent noise above 25 kHz.
2. Byou blew your nose excessively.
3. Cyou were subjected to continuous noise below 8 kHz.

2.What meal is most recommended after a long shift?.

1. AHigh carbohydrates.
2. BLow carbohydrates.
3. CHigh protein.

3.In a discussion, the person who is most likely to be agreed with is.

1. Athe person who repeats the point most times.
2. Bthe most argumentative person.
3. Cthe person with the highest status.

1.Flying under A conditions is carried out by aircraft in the.

1. Aproto-modified Group.
2. Bvariant Group.
3. Cseries aircraft group.

2.Which of the following does not require a Noise Certificate?.

1. AA helicopter under 5700 kg.
2. BA small business jet aircraft.
3. CA fixed wing aircraft under 2730 kg.

3.A Part-145 approval covers.

1. Abase maintenance.
2. Bthe major part of the organisation.
3. Conly line maintenance.

1.How is a serrated rod ice detector bench tested?.

1. AScrewdriver torque test.
2. BBy a motor load test.
3. CMotor test and go/no-go gap measurement.

2.A fire that can be put out by a crew member in a cargo bay is in a.

1. Aclass A compensation.
2. Bclass D compensation.
3. Cclass B compensation.

3.In a pneumatic system, the maintainer valve will be fitted in supply lines to.

1. Aessential equipment.
2. Ball equipment.
3. Cnon-essential equipment.

1.When OAT increases, what happens to an helicopter operating ceiling?.

1. ADecrease.
2. BIncrease.
3. CNo effect.

2.ATA Zone 100 is.

1. Aupper fuselage.
2. Blower fuselage.
3. CWing.

3.A direct reading Bourdon gauge has a restriction in the inlet. This is to.

1. Aprevent FOD ingestion.
2. Bdampen sudden pressure changes.
3. Callow for calibration.

1.During aerobatic maneuvers, what prevents fuel from spilling out of fuel tank vents?

1. ABooster pump differential pressure.
2. BBaffle plates in tanks.
3. CFloat operated valves.

2.To prevent compressor surge and overheating of the combustion chamber due to over fueling

1. Aa barometric unit is fitted.
2. Ba throttle unit is fitted.
3. Can acceleration control unit is fitted.

3.The end fittings on a fuel non-return valve are normally of different sizes to.

1. Aprevent incorrect installation.
2. Bfacilitate bleeding the system.
3. Callow a full fuel flow through the valve.

1.When a fire extinguisher is discharged the immediate action is.

1. Aoperate engine to idle.
2. Bclean with cold water.
3. Cclean with hot water.

2.The term Pb means.

1. Aburner pressure measured at the diffuser case.
2. Bburner pressure measured at the NGV.
3. Cburner pressure measured at the combustion chamber.

3.What must not be used during an engine compressor wash?.

1. AChlorine.
2. BDesalinization solution.
3. CCrushed almond.

1.In blade station numbering the stations nearest the hub are.

1. Adatum.
2. Bhighest.
3. Clowest.

2.Adjustments to a variable pitch propeller are.

1. Amade in the air using the synchronizer.
2. Bmade on the ground with the engine stationary.
3. Cmade on the ground with the engine running.

3.In a single acting propeller, blade angle is increased by.

1. Acounterweights and a feathering spring.
2. BCTM.
3. Coil pressure.