Vayudoot Aviation

1. Manoeuvre induced error

is caused by transient pressure changes at static vents.

lasts for only a short time at high altitude.

is combined with instrument and position error on a correction card.

is likely to be greatest when yawing after engine failure.

2. A pressure head is subject to the following errors:

position, manoeuvre induced, instrument.

position, manoeuvre induced.

position, manoeuvre induced, temperature.

position, manoeuvre induced, density.

3. A pitot head is used to measure:

dynamic minus static pressure.

static pressure.

dynamic pressure.

static plus dynamic pressure.

4. Where an alternate static source is fitted, use of this source usually leads to:

no change in position error.

a temporary increase in lag error.

a lower pressure error than with normal sources.

an increase in position error.

5. A static vent is used to measure

dynamic pressure plus pitot excess.

atmospheric pressure.

pitot excess pressure.

dynamic pressure minus pitot excess.

6. Which of the following instruments require inputs of both pitot and static pressure

airspeed indicator only.

airspeed indicator and machmeter.

airspeed indicator, machmeter and vertical speed indicator.

airspeed indicator, vertical speed indicator, altimeter.

7. Position error

may be reduced by the fitting of static vents.

will depend solely on the attitude of the aircraft.

will usually decrease as the aircraft approaches the speed of sound.

will usually decrease with an increase in altitude.

8. Static vents are usually fitted to both sides of the aircraft fuselage. This will:

reduce the position error.

require a calibration card for each static vent.

balance out errors caused by side slipping or yawing.

enable a greater number of instruments to be fitted.

9. Turbulent flow around a pressure head will cause:

95% of pressure error.

95% increase in manoeuvre induced error.

an increase in the dynamic pressure

density error.

10. Pressure heads supply data to the following instruments

all the above plus air driven gyros.

standby instruments only, when air data computers fitted.

altimeters, ASI's, VSI's, machmeters, air data computers.

air data computers, compasses, altimeters, and ASI's.

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