Vayudoot Aviation

1. Pressure heads supply data to the following instruments

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

standby instruments only, when air data computers fitted.

all the above plus air driven gyros.

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

2. 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.

3. Turbulent flow around a pressure head will cause:

95% increase in manoeuvre induced error.

95% of pressure error.

density error.

an increase in the dynamic pressure

4. A static vent is used to measure

dynamic pressure plus pitot excess.

dynamic pressure minus pitot excess.

pitot excess pressure.

atmospheric pressure.

5. Position error

will depend solely on the attitude of the aircraft.

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

may be reduced by the fitting of static vents.

will usually decrease with an increase in altitude.

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

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.

reduce the position error.

7. A pitot head is used to measure:

dynamic pressure.

dynamic minus static pressure.

static pressure.

static plus dynamic pressure.

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

position, manoeuvre induced, instrument.

position, manoeuvre induced.

position, manoeuvre induced, density.

position, manoeuvre induced, temperature.

9. Manoeuvre induced error

is likely to be greatest when yawing after engine failure.

lasts for only a short time at high altitude.

is caused by transient pressure changes at static vents.

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

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

an increase in position error.

a temporary increase in lag error.

no change in position error.

a lower pressure error than with normal sources.

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Questions for PRESSURE HEADS