Brunei Darussalam: Trivia Quiz On Amateur Radio!

1. A licensed amateur may use his/her station for which non profit making organisation?

A Social Club for Ex Servicemen

An organisation for the furtherance of Amateur Radio

A church organisation

A political organisation they support

2. Desensitising of a T.V receiver is caused when?

The antenna is too high

There are strong R.F. signals in close proximity

The brightness of the TV is excessive

The rig is being operated out of band

3. The essential requirement for a log book is that it must have...

No fewer than 50 pages

Be obtained from the City and Guilds

Not be loose leaf

Be loose leaf

4. If a strong overloads the first stages of a receiver what control is best adjusted?

Notch Filter

R.F Gain

A.F. Gain

Squelch

5. Which of the following is not an amateur band

51.20Mhz

144.15Mhz

432.29Mhz

1370.77Mhz

6. A common cause of fading in the H.F. bands is...

Variation in receiver sensitivity

Clouds passing overhead

Movement of the antenna

Summation of signals arriving from different paths

7. The licensee shall test his transmissions for radiation of spurious emission and keep a record of these tests?

With an oscilloscope

Once a month

Every six month

From time to time

8. In which waveband is there a low powder segment?

40 m

30 m

160 m

2 m

9. A station isolation switch is installed so that in the event of electric shock power can be switched off. The most important feature of the switch is...

Should be illuminated with the word danger on it

Should be red in color

Function and position known to all household members

Must be mounted out of the reach of children

10. A Power transformer cannot...

Increase the supply voltage

Increase the supply current

Increase the supply power

Increase the impedance of the supply

11. A Public address system is experiencing breakthrough from a V.H.F transmission. A suitable R.F decoupling component is?

100 uF aluminium electrolytic capacitor

NF Ceramic Capacitor

10 mF Tantalum bead capacitor

0.1 pf Silvered Mica capacitor

12. Band planning

Minimize Interference between different modes

Is a license condition which must be compiled with

Is only applicable in the 2 meter band

Is only applicable for SSTV and digital modes

13. The power amplifier of a transmitter is operated in linear mode. The output will

Be generated with the minimum power supply consumption

Only be suitable for morse and data

Contain less harmonics then the input

Be an amplified replica of the input waveform

14. A pi-network utilizes two capacitors and a coil what type of filter is it?

Low Pass Filter

High Pass Filter

Band Pass Filter

Band -stop Filter

15. A transmitter has an output of 400 watts. What is this in dbW?

4000 dbw

14 dbw

23 dbw

26 dbw

16. In superhetrodyne receiver, which stage provide the most gain and selectivity?

Mixer

R.F. Amplifiers

I.F. Amplifiers

A.F. Amplifiers

17. How can the power output of an amateur station be substantially increased?

By improving the SWR

By the use of an Aerial Tuning Unit (A.T.U)

Use of a linear power amplifier

By switching to Upper Sideband