Vayudoot Aviation

1. Turbulent flow around a pressure head will cause:

95% increase in manoeuvre induced error.

an increase in the dynamic pressure

density error.

95% of pressure error.

2. 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.

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

airspeed indicator, machmeter and vertical speed indicator.

airspeed indicator and machmeter.

airspeed indicator, vertical speed indicator, altimeter.

airspeed indicator only.

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

position, manoeuvre induced, temperature.

position, manoeuvre induced.

position, manoeuvre induced, instrument.

position, manoeuvre induced, density.

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

a lower pressure error than with normal sources.

a temporary increase in lag error.

an increase in position error.

no change in position error.

6. Manoeuvre induced error

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.

is caused by transient pressure changes at static vents.

7. 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.

enable a greater number of instruments to be fitted.

balance out errors caused by side slipping or yawing.

8. A static vent is used to measure

dynamic pressure minus pitot excess.

dynamic pressure plus pitot excess.

pitot excess pressure.

atmospheric pressure.

9. A pitot head is used to measure:

dynamic minus static pressure.

static pressure.

static plus dynamic pressure.

dynamic pressure.

10. Pressure heads supply data to the following instruments

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

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

standby instruments only, when air data computers fitted.

all the above plus air driven gyros.

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Questions for PRESSURE HEADS