PRESSURE HEADS – Air – DGCA Question Bank For Politics

#1. A pitot head is used to measure:

dynamic minus static pressure.

static pressure.

dynamic pressure.

#2. A static vent is used to measure:

dynamic pressure minus pitot excess.

dynamic pressure plus pitot excess.

atmospheric pressure.

pitot excess pressure.

#3. A pressure head is subject to the following errors:

position, manoeuvre induced, temperature.

position, manoeuvre induced.

position, manoeuvre induced, density.

position, manoeuvre induced, instrument.

#4. Turbulent flow around a pressure head will cause:

density error.

95% increase in manoeuvre induced error.

an increase in the dynamic pressure

95% of pressure error.

#5. Manoeuvre induced error:

is caused by transient pressure changes at static vents.

is likely to be greatest when yawing after engine failure.

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

lasts for only a short time at high altitude.

#6. Position error:

may be reduced by the fitting of static vents.

will usually decrease with an increase in altitude.

will depend solely on the attitude of the aircraft.

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

#7. Pressure heads supply data to the following instruments:

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

standby instruments only, when air data computers fitted.

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

all the above plus air driven gyros.

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

reduce the position error.

balance out errors caused by side slipping or yawing.

require a calibration card for each static vent.

enable a greater number of instruments to be fitted.

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

airspeed indicator, machmeter and vertical speed indicator.

airspeed indicator, vertical speed indicator, altimeter.

airspeed indicator only.

airspeed indicator and machmeter.

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

a temporary increase in lag error.

a lower pressure error than with normal sources.

an increase in position error.

no change in position error.

Dgca Question Bank For Pilots

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