Vayudoot Aviation

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

balance out errors caused by side slipping or yawing.

reduce the position error.

require a calibration card for each static vent.

enable a greater number of instruments to be fitted.

2. Manoeuvre induced error

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

is caused by transient pressure changes at static vents.

lasts for only a short time at high altitude.

is likely to be greatest when yawing after engine failure.

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

no change in position error.

a lower pressure error than with normal sources.

an increase in position error.

a temporary increase in lag error.

4. Turbulent flow around a pressure head will cause:

density error.

95% of pressure error.

95% increase in manoeuvre induced error.

an increase in the dynamic pressure

5. Position error

will usually decrease with an increase in altitude.

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

will depend solely on the attitude of the aircraft.

may be reduced by the fitting of static vents.

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

airspeed indicator, vertical speed indicator, altimeter.

airspeed indicator, machmeter and vertical speed indicator.

airspeed indicator only.

airspeed indicator and machmeter.

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

position, manoeuvre induced, temperature.

position, manoeuvre induced, density.

position, manoeuvre induced.

position, manoeuvre induced, instrument.

8. A static vent is used to measure

dynamic pressure plus pitot excess.

atmospheric pressure.

dynamic pressure minus pitot excess.

pitot excess pressure.

9. A pitot head is used to measure:

static plus dynamic pressure.

static pressure.

dynamic minus static pressure.

dynamic pressure.

10. Pressure heads supply data to the following instruments

standby instruments only, when air data computers fitted.

all the above plus air driven gyros.

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

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

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