ATPL Nav Revision 1

通報

問題一覧

Side bands (USB or LSB) are often used with AM propagation. An advantage of utilising side band transmissions is -

All of the above

The VOR operates on the principle of

Phase differential

A common error to both the ADF/NDB and VOR navigation system is ?

Terrain effect

VOR radials are calibrated for the magnetic variation that exits -

At the station of installation

An error or limitation commonly associated with the VOR is

site error

Aircraft bonding refers to

ensuring an even electrical potential between different parts of the airframe

At ranges greater than the line of site, the type of radio wave the ADF/NDB relies on is

Ground wave

Bending and scalloping are terms used when describing errors in ?

VOR

When you select a DME frequency you are ?

Selecting a pulse paired frequency

The ADF sense attenna

resolves the 180 degree ambiguity

An advantage of the secondary radar system over the primary radar system is that the return signal -

May contain coded information

You are at FL270 and 30DME , tracking to a destination along a track which is aligned with an NDB, LOC and a VOR radial from the destination. Your aircraft has both VHF, NAV and ADF equipment. The aid you should use for tracking is -

VOR

The theoretical range of a VOR at a receiver height of 12000ft is -

134

At ranges up to line of site , the type of radio waves on which the ADF/NDB system relies to provide accurate information is -

the direct wave

The error or limitation commonly associated with the NDB system is -

Terrain effect

An aircraft is being navigated solely by reference to radio nav aids. The max permissible time between positive fixes is ?

2hrs

The ADF loop antenna -

identifies the null position

HF radio waves primarily propagate by -

single and multi hop sky waves

You VOR is set to required track of 090 and you have a from flag displayed. The CDI is 4 degrees to the right, DME distance from the station 45nm. The distance off the required track you are is -

3nm

The centre line of the localiser of an ILS is determined by -

a locus of points of equal signal modulation radiation from each side of the centreline

In an ILS display, full deflection of the glide path needle occurs when the aircraft is ?

0.7 degrees above or below the glide path

As an aircraft approaches an enroute DME station when overflying, the DME distance readout will -

Reduce at a decreasing rate to read height in nm overhead, then increase at an increasing rate after station passage

The wavelength of a radio signal is defined by

the length of a radio wave from any point to the same point on the next cycle

The microwave landing system (MLS) has the advantage of -

curved approaches

An advance of secondary surveillance radar over primary is the return signal -

eliminates unwanted returns (clutter)

An aircraft is operating under IFR. It is exempted from the requirement to obtain nav fixed at specific intervals when ?

equipped with an approved area nav system that meets performance requirements on the intended route

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