AMT263 Fuel, Fire, & Instruments, M6 & M7

(8587) Which of the following operating mechanisms would be found in a hydraulic pressure gauge?

• Bourdon tube.

• Pressure diaphragm.

• Evacuated bellows.

(8588) What is the fixed line mark attached to the compass bowl of a magnetic compass called?

• Reeder line.

• Lubber line.

• Reference line.

(8589) (1) Aircraft instruments are color-coded to direct attention to operational ranges and limitations. (2) Aircraft instruments range markings are not specified by Title 14 of the Code of Federal Regulations but are standardized by aircraft manufacturers. Regarding the above statements,

• only No. 1 is true.

• only No. 2 is true.

• both No. 1 and No. 2 are true

(8593) Magnetic compass bowls are filled with a liquid to

• retard precession of the float.

• reduce deviation errors.

• dampen the oscillation of the float.

(8596) Which statement regarding an aircraft instrument vacuum system is true?

• Dry-type vacuum pumps with carbon vanes are very susceptible to damage from solid airborne particles and must take in only filtered air.

• Vacuum systems are generally more effective at high altitudes than positive pressure systems.

• If the air inlet to each vacuum instrument is connected to a common atmospheric pressure manifold, the system generally will be equipped with individual instrument filters only.

(8601) A barometric altimeter indicates pressure altitude when the barometric scale is set at

• 29.92" Hg

• 14.7" Hg

• field elevation.

(8601.1) At sea level, when the average atmospheric pressure is 14.7 PSI, the barometric pressure is

• 29.92 Hg.

• 29.92 Mb.

• 1013.25 Hg.

(8602) A Bourdon tube instrument may be used to indicate 1. pressure. 2. temperature. 3. position.

• 1 and 2.

• 1

• 2 and 3.

(8603) A turn coordinator instrument indicates

• the longitudinal attitude of the aircraft during climb and descent.

• the need for corrections in pitch and bank.

• both roll and yaw.

(8604) Aircraft temperature thermocouple leads may

• not be altered and are designed for a specific installation.

• be installed with either lead to either post of the indicator.

• be repaired using solderless connectors.