Sample questions for RNAT part 2

8/16/2019 Sample questions for RNAT part 2

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No. Question A B C D

1 In the emiision designation F3E, the number 3 denotes ______.Bandwidth of the

modulating signal

type of channel in this

case one channelfrequency modulation

2 Which transmission has the narrowest bandwidth? A3E A3J F3E

3

From the choices listed, what emission type do Amateur radio

Operatiors in the 144 MHz band commonly use to

communicate locally with using voice communications or

telephony?

QPSK FSK

4An electromagnetic field can be plotted graphically on the

_______ axis.X and Y axis of a graph X, Y, Z axis of a graph Y and Z axis of a graph X and Z axis of a graph

5

6

7 21 meters 3.57 meters 7.14 meters

8300, 000, 00 meters per second is the speed of light in

________.air water vacuum none

9 How many symbols does the decimal numbering system have? 2 10 16 8

ELEMENT 5


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10What is the frequency of a signal having a wavelength of 10.6

meters?3.8 MHz 28.3 MHz 29.3 MHz

11

What emission type do Amateur Radio Operators in the HF

band commonly use to communicate with each other using

voice communications or telephony?

Continuous Wave Frequency ShiftKeying

Single Side Band

12 The positive peak of the wave signal is also known Trough

13

14 How many symbols does the Hexadecimal numbering systemhave?

2 10 16 8

15 To reduce key clicks, the best technique is to ___________.

16 What is the wavelength of the frequency 435 MHz? 7 meters 0.7 meter 21.1342 meters 25.8 meters

17A sine wave with a peak voltage of 5 Volts has been measured.

What is the RMS value of this wave?5 Volts 10 Volts 2.5 Volts

18

What emission type do Amateur Radio Operators in the HF

band commonly use to communicate with each other using

telegraphy or Morse Code?

Continuous WaveFrequency Shift

KeyingSingle Side Band

19A dBI unit specification in antennas denotes the antenna gain

reference to the ________.Isotropic Wave Isopole radiator Marconi radiator


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20

A sine wave with a peak-to-peak voltage of 20 Volts has been

measured. What is the RMS value of this sine wave? 10 7.07 Volts 20 Volts

21 What is the frequency of a signal having a wavelength of 0.25meters?

3.6 MHz 26.3 MHz 1.2 GHz 25.68 MHz

22 What is the wavelength of the frequency 1800 KHz? 166.67 meters 160 meters 160 centimeters 26.68 meters

23What is the wavelegnth of a signal whose central carrier is

monitored at 14.195 MHz7 meters 0.7 meter 21.1342 meters 26.68 meters

24 The negative peak of the wave signal is also known as ______. Floor trough

25 Which is a VHF amateur band allocation? 70 cm 23 cm 6 meter band 10 meter band


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1what is the device use to convert sound waves into electrical

signals?Microphone LCD LED Transistor

2 A CMOS logic circuit will generally have a fan-out of ______. 1

lower than a standard

7400 TTL (transistor-

transistor logic

higher than a standard

7400 TTLless than 1

3

All quartz crystals used in communications, rely on utilizing the

_______. photoelectric effect hall effect piezoelectric effect Faraday effect

4The closest semiconductor "equivalent" to a vacuum tube

triode is ________.

an NPN bipolar

transistor

a silicon controlled

rectifiera field effect transistor

5

What is a semiconductor device with both the active and

passive elements contained in a single package to perform a

complete electronic function?

Printed Circuit Board Integrated Circuit (IC) Microphone

6The very popular SANWA 360TR analod multimeter and itsvarious clones utilizes the D'Arsonval-Weston meter movement

which is basically ________.

moving magnet

systemmoving coil system tangent galvanometer

7In electronics components, capacitors and inductors have

reactance. Capacitors do not like a sudden change in _______.applied voltage

current flowing

through it

ELEMENT 6


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8

9 Resistor

10What is a resistor with a continuously adjustible resistance

used for volume of brightness control?Potentiometer

11

12

13

14

15

16inefficient

performance

decreased

capacitance value

decreased current

capacity

production of gasses

in the electrolyte

which can cause an

explotion


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17

What is a p-n device which is like a rectifier diode except that it

is usually intended to indicate flow of current, as a power ON

indicator or condition of a circuit?

LED Loudspeaker Microphone LCD

18

What is an electrical device consisting of two or more coils

coupled together by magnetic induction usually converting

220V AC line to a lower secondary winding voltage for DC

power supplies?

Transformer Turning Coil Relay Electromagnet

19

What is a protective device having a short length of wire that

melts when the current that passes through it exceeds a

predetermined (rated) value?

Terminal Post Soldering Lead Pilot Lamp Fuse

20

The zener diode serves as a good simple voltage reference

because it maintains a relatively constant voltage across itwhen ______.

forward biased reverse biased unbiasedbiased by ___

alternating ___

21What device is used in electronic circuits to introduce

inductance, frequently found in tuning and filter circuits?Transistor Coil Thermistor

22

LCD (liquid crystal display) digital multimeters are fast replacing

D'Arsonval Weston analog meter, LCDs feature a sealed glass

panel containing a "liquid crystal". The molecules of the liquied

crystal are made to twist so that they can channel lightbetween two polarizing plastic sheets by subjecting them to

_______.

fluctuating magnetic

fieldsteady magnetic field

23

Although made obsolete with the invention of the diac, what

non-solid state device is a good component to use in

comparing SCRs (silicon controlled rectifier) and TRIACs?

zener diode gas triode neon lamp


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24Which of these works on the same principle as a CFL (compact

fluprescent lamp)?light emitting diode incandescent lamp neon lamp

25What is a two terminal device that conducts current easier in

only one direction?Fuse


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1

How does the feed-point impedance of a 1/2 wave dipole

antenna change as the antenna is lowered from 1/4 wave

above ground?

It peaks at about 1/2

wavelength above

ground

1 steadily increases 1 steadily decreases

2To make your call sign easily copied when using voice

transmission, what should you do?

use standard

international

phonetics for each

letter of your call sign

use any words which

start with the same

letters as your call

sign for each letter of

your call

talk louder

3 What does the expression "CQ DX" usually mean? A distress call

The caller is listening

for a station in

Germany

The caller is listening

for a Phillipine club

station

4Which of the following is a use for the IF shift control on a

receiver

To change frequency

rapidly

To tune in stations

that are slightly off

frequency without

changing your

transmit frequency

To avoid interference

of stations very close

to the receive

frequency

5 What is the meaning of the Q signal "QRS"? Interfernce from static Send more slowly Send RST ____

ELEMENT 7


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6Which of the following is a disadvantage of multiband

antennas?

They have poor

harmonic rejection

They must be used

with an antenna tuner

7When is an amateur station allowed to use any means at its

disposal to assist another station in distress?

At any time when

transmitting to an

organized net

Only on authorized HF

frequencies

8Which of the following (_____________________) would be

the best for a 100-watt HF mobile installation?

9Which of the following frequencies is available to an amateur

radio operator holding a General Class license?28.020 MHz

10Which of these connector types is commonly used for RF

service at frequencies up to 146 MHz?Octal

11What would be the SWR if you feed a vertical antenna that has

a 25-ohm feed point impedance with 50-ohm coaxial cable?1.04

12 What is meant by the term "73"? Long Distance


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13What is the speed of Morse Code profienciency testing for

Class B?5 WPM

14

15

16

If you are in contact with another station and you hear an

emergency call for help on your frequency. What should you

do?

Tell the calling station

that the frequency is

in use

______ the calling

station to the nearest

emergency net

frequency

17 What is the meaning of the abbreviation signal "K"? "any station transmit""all received

correctly""end of message"

"called station only

transmit?

18

it disrupts

communications via

satellite more than

direct communications

it disrupts signals on

lower frequencies

more than those on

higher frequencies

it enhances

propagation on all HF

frequencies

None because only

areas on the negative

side of the Earth has

affected

19 What does "connected" mean in a packet-radio link?

A telephone link is

working between the

two station

a message has

reached an amateur

station for local

delivery

A transmitting station

is sending date to only

one receiving station,

it repllies that the

date is being received

correctly

A transmitting and

receiving stations

using a ___ no other

station take place

____ ____ ____


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20 What information is contained in a station log?Date and Time of

contact

Call sign of the station

contacted and the

signal report given

_____ _____

frequency of the

contact

All of the choices

21

22

23 what do you mean when using a signal report?Recovery signal

strength tempo

Recovery signal speed

tone

Readibility signal

speed, tempo

24

Only messages for

other licensed

amateurs

Any message, as long

as the amateur

operator is not paid

Any message, as long

as the text of the

message is recorded

in the station log

25Change to a different

frequency

Immediately cease all

transmissions

Acknowledge the

station in distress and

determine what

assistance may be

needed

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Sample questions for RNAT part 2