Vayudoot Aviation

1. When flying from low pressure to high pressure, the barometric error of an altimeter will cause the instrument to:

read the true altitude, providing a correction is made for temperature.

indicate a higher altitude than the correct one.

underread the true altitude of the aircraft.

overread the true altitude of the aircraft

2. An aircraft has one altimeter set to QFE and one to aerodrome QNH 1000 mb. If the airfield elevation is 300 ft, immediately before take-off the altimeter with QFE set will read ....... and the other ....... If the QFE altimeter is set to 1013 when passing through the transition altitude 3000 ft, it will read ...... (Assume 1 mb = 30 ft)

300 ft; zero; 2610 ft

zero; 300 ft; 3390 ft

zero; 300 ft; 3690 ft

zero; 300 ft; 2610 ft

3. The errors affecting the pressure altimeter are

instrument position, manoeuvre induced, density, temperature, lag

instrument, pressure, lag, barometric, temperature, compressibility.

instrument, position, manoeuvre induced, temperature, barometric, lag.

instrument, pressure, manoeuvre induced, density, temperature, lag.

4. In the International Standard Atmosphere, the mean sea level pressure is ......., the lapse rate of temperature ....... between MSL and ....... and is isothermal up to ........ The numbers missing are:

1013.25 mb; 1.98°C per 1000 ft; 36 090 ft; 104 987 ft.

1225 mb; 1.98°C per 1000 ft; 36 090 ft; 104 987 ft

1013.25 mb; 1.98°C per 1000 ft; 36 090 ft; 65 617 ft

1225 mb; 2° per 1000 ft; 37 000 ft; 66 000 ft

5. An altimeter with ....... set on the subscale will indicate ......., but with ....... set, the altimeter will show .......

QNH; height above touch down; 1013; height amsl

1013; pressure altitude; QNH; height above mean sea level.

QNE; pressure altitude; QNH; height above airfield datum

QFE; height above the airfield datum; 1013; height amsl

6. An aircraft taking off from an airfield with QNH set on the altimeter has both static vents blocked by ice. As the aircraft climbs away the altimeter will:

show only a very small increase in height

read the height of the aircraft above the airfield

read the airfield elevation.

indicate the aircraft height amsl.

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