ASOC Restricted Mock Exam - Khampat Ham-Radio Hub

Q1. (Sec A) Which instrument is used to measure standing wave ratio?

Voltmeter SWR Meter Oscilloscope Ammeter

Q2. (Sec A) The high frequency band (HF) is

3KHz to 30KHz 3MHz to 30MHz 30KHz to 300KHz 30MHz to300MHz

Q3. (Sec A) The tolerance bands with colors gold, silver & brown represent

5%, 10%, 2% 5%, 10%, 1% 10%, 5%, 1% 10%, 5%, 2%

Q4. (Sec A) The biasing of a transistor is to

To avoid thermal run away To provide stable operation To have a stable quiescent point All of the above

Q5. (Sec A) If two capacitors are placed in series, is the final capacitance will be:

Higher than the sum of the two capacitors Lower than the least of the two capacitors The sum of the two capacitors Cannot be determined the given data.

Q6. (Sec A) Parameter that determines lowest signal reception capability of a receiver is

Sensitivity Fidelity Selectivity Squelch

Q7. (Sec A) Kirchhoff’s voltage Law states that

The sum of voltages in a loop is zero The algebraic sum of voltages in a loop is zero The sum of currents at a junction is zero The algebraic sum of currents at a junction is zero

Q8. (Sec A) If a small value of inductance is connected in parallel with a large value, the combined inductance will be

The same Higher Lower Cannot be determined with the given data.

Q9. (Sec A) The following modulation is used for audio transmission in TV broadcast

Amplitude modulation Frequency modulation Pulse modulation None of the above

Q10. (Sec A) A matching transformer (10:1 turns ratio) is used to match 200 ohms into ___ ohms.

2 20 200 5

Q11. (Sec A) Capacitance is measured in

Amperes watt Farad Coulombs

Q12. (Sec A) Conventional Facsimile machine sends __ data over _ media

Analog, air Digital, air Analog, telephone Digital, telephone

Q13. (Sec A) To increase voltage, batteries are connected in

Parallel Series Delta Star

Q14. (Sec A) The quartz crystal oscillator is known for its

Linearity Stability High output Flexibility

Q15. (Sec A) What type of modulation is standard for VHF FM voice?

F3E A3E J3E F1B

Q16. (Sec A) 3 to 30 MHz band is known as

MF LF VHF HF

Q17. (Sec A) The UHF range is

30 to 300 KHz 300 to 3000 KHz 3 to 30 GHz 300 to 3000 MHz

Q18. (Sec A) The ideal value of ripple factor should be

0 1 0.707 1.414

Q19. (Sec A) The abbreviation of RMS voltage is

Railway Mail Service voltage Real Mean Square voltage Root Mean Square voltage Root Mean Service voltage

Q20. (Sec A) Among all these materials, which one has poor conductivity ?

Copper Aluminum Silicon Silver

Q21. (Sec A) The unit of Inductance is

Ohm Farad Henry Mho

Q22. (Sec A) The expanded form for ‘LDR’ is

Light Emitting Display Low Dependent Reading Light Emitting Diode Light Dependent Resistor

Q23. (Sec A) If 2 mA current flows through a 100 Kohm resistor, then the voltage across it is

2 volts 20 volts 200 volts 0.2 volts

Q24. (Sec A) What is the standard impedance of an amateur transmitter output?

75 Ohms 300 Ohms 50 Ohms 600 Ohms

Q25. (Sec A) When frequency of a carrier is varied according to modulation the result is

Frequency modulation Amplitude modulation Product detection None of these

Q26. (Sec B) Under Indian Wireless Telegraph rules, 1973, the minimum age to work on a radio transmitting apparatus is ______ years

12 15 18 21

Q27. (Sec B) What is an amateur station expected to have at all times?

A generator A backup antenna A valid license and logbook A secondary transceiver

Q28. (Sec B) A bandwidth of 402 M represents

4000 MHz 402 MHz 4.2 MHz 420 MHz

Q29. (Sec B) Amateurs should preserve their log for a period of

6 months 1 year 2 years 9 months

Q30. (Sec B) What does "73" mean in amateur radio?

Love and kisses Best regards Ending transmission Roger

Q31. (Sec B) The Q code for “ Are my signals fading? ” is

QSB QAM QSI QSF

Q32. (Sec B) The second symbol in the designation of emission represents

Nature of signals modulating the main earner Type of modulation of the main carrier Type of information to be transmitted None of the above

Q33. (Sec B) The expanded form for RST is

Readability signal tone Readability strength tone Readability strength testing Readability signal strength tone

Q34. (Sec B) Who issues the Amateur Radio License in India?

TRAI WPC Wing, DoT ISRO Prasar Bharati

Q35. (Sec B) The first symbol in the designation for classification of emission represents

Nature of signals modulating the main carrier Type of modulation of the main carrier Type of information to be transmitted None of the above

Q36. (Sec B) The Q code for "What is your location?" is

QRM QRN QTH QSL

Q37. (Sec B) The Q code for “What is the correct time” is

QCT QTM QRT QTR

Q38. (Sec B) Grade II amateurs can communicate on 7 MHz in

A1 A3 F3 A3A

Q39. (Sec B) The amateur license is renewed by

P & T Ministry of Communication Monitoring stations None of these

Q40. (Sec B) The expanded form for TU in Morse code is

Thank u Thank you Thank everyone None of the above

Q41. (Sec B) The phonetic for alphabet ‘Y’ is

Yardly Yankee Yan Yarn

Q42. (Sec B) The Phonetic alphabet for L is

Lilly Lima Limca Lisa

Q43. (Sec B) In India the standard time signal is broadcast by

ISRO WPC OCS NPL

Q44. (Sec B) Conventional Morse code transmission can be represented by

J3E F3E ME A1A

Q45. (Sec B) The abbreviation for ‘stand by’ in Morse code is

SY AS SB AD

Q46. (Sec B) The fee for mobile endorsement under new rules is

Rs 100 Rs. 200 Rs. 1000 Rs. 2000

Q47. (Sec B) Which should be used as a suffix in call sign for mobile amateur stations

ME MB MO ML

Q48. (Sec B) The Distress signal in radiotelephony is

SOS MAYDAY PANPAN SECURITE

Q49. (Sec B) The Q code for “Are you ready?” is

QRY QRV QAR QRE

Q50. (Sec B) Amateurs are forbidden to transmit about

Equipments Weather Antennas Third party messages

ASOC Restricted Grade Mock Exam