Amateur Radio Exam requires all individual to clear exams and know the basics of electronics and electrical components. This information not only helps you to pass in the exam, it is also good to know these basic building blocks of circuits and power requirements. OM Rajesh (VU3PLP) has compiled following quiz for you to practice for your ham radio exam. Go ahead and jot down the answers in a sheet of paper and check the results in the answers section. Happy Hamming!!!

Q1. What is the name of a current that flows only in one direction?
A. An alternating current
B. A direct current
C. A normal current
D. A smooth current

Q2. What is the standard unit of frequency?
A. The megacycle
B. The Hertz
C. One thousand cycles per second
D. The electromagnetic force

Q3. How much voltage does an automobile battery usually supply?
A. About 12 volts
B. About 30 volts
C. About 120 volts
D. About 240 volts

Q4. What is the name of a current that reverses direction on a regular basis?
A. An alternating current
B. A direct current
C. A circular current
D. A vertical current

Q5. What is the term used to describe opposition to current flow in ordinary conductors such as wires?
A. Inductance
B. Resistance
C. Counter EMF
D. Magnetism

Q6. What instrument is used to measure the flow of current in an electrical circuit?
A. Frequency meter
B. SWR meter
C. Ammeter
D. Voltmeter

Q7. What instrument is used to measure Electromotive Force (EMF) between two points such as the poles of a battery?
A. Magnetometer
B. Voltmeter
C. Ammeter
D. Ohmmeter

Q8. What is the name for the distance a radio wave travels during one complete cycle?
A. Wave speed
B. Waveform
C. Wavelength
D. Wave spread

Q9. What term describes the number of times that an alternating current flows back and forth per second?
A. Pulse rate
B. Speed
C. Wavelength
D. Frequency

Q10. What does 50 hertz (Hz) mean?
A. 5000 cycles per second
B. 50 cycles per second
C. 5000 meters per second
D. 50 meters per second

Q11. Electromagnetic waves that oscillate more than 20,000 times per second as they travel through space are generally referred to as what?
A. Gravity waves
B. Sound waves
C. Radio waves
D. Gamma radiation

Q12. How fast does a radio wave travel through space?
A. At the speed of light
B. At the speed of sound
C. Its speed is inversely proportional to its wavelength
D. Its speed increases as the frequency increases

Q13. How does the wavelength of a radio wave relate to its frequency?
A. The wavelength gets longer as the frequency increases
B. The wavelength gets shorter as the frequency increases
C. There is no relationship between wavelength and frequency
D. The wavelength depends on the bandwidth of the signal

Q14. What is the formula for converting frequency to wavelength in meters?
A. Wavelength in meters equals frequency in Hertz multiplied by 300
B. Wavelength in meters equals frequency in Hertz divided by 300
C. Wavelength in meters equals frequency in megahertz divided by 300
D. Wavelength in meters equals 300 divided by frequency in megahertz

Q15. What are sound waves in the range between 300 and 3000 Hertz called?
A. Test signals
B. Ultrasonic waves
C. Voice frequencies
D. Radio frequencies

Q16. What property of a radio wave is often used to identify the different bands amateur radio operators use?
A. The physical length of the wave
B. The magnetic intensity of the wave
C. The time it takes for the wave to travel one mile
D. The voltage standing wave ratio of the wave

Q17. What is the frequency range of the 2 meter band in the India?
A. 144 to 146 MHz
B. 222 to 225 MHz
C. 434 to 438 MHz
D. 50 to 54 MHz

Q18. What is used to convert radio signals into sounds we can hear?
A. Transmitter
B. Receiver
C. Microphone
D. Antenna

Q19. What is used to convert sounds from our voice into radio signals?
A. Transmitter
B. Receiver
C. Speaker
D. Antenna

Q20. What two devices are combined into one unit in a transceiver?
A. Receiver, transmitter
B. Receiver, transformer
C. Receiver, transistor
D. Transmitter, deceiver

Q21. What device is used to convert the alternating current from a wall outlet into low-voltage direct current?
A. Inverter
B. Compressor
C. Power Supply
D. Demodulator

Q22. What device is used to increase the output of a 10 watt radio to 100 watts?
A. Amplifier
B. Power supply
C. Antenna
D. Attenuator

Q23. Which of the battery types listed below offers the longest life when used with a hand-held radio, assuming each battery is the same physical size?
A. Lead-acid
B. Alkaline
C. Nickel-cadmium
D. Lithium-ion

Q24. What is the nominal voltage per cell of a fully charged nickel-cadmium battery?
A. 1.0 volts
B. 1.2 volts
C. 1.5 volts
D. 2.2 volts

Q25. What battery type on this list is not designed to be re-charged?
A. Nickel-cadmium
B. Carbon-zinc
C. Lead-acid
D. Lithium-ion

Q26. What is required to keep rechargeable batteries in good condition and ready for emergencies?
A. They must be inspected for physical damage and replaced if necessary
B. They should be stored in a cool and dry location
C. They must be given a maintenance recharge at least every 6 months
D. All of these answers are correct

Q27. What is the best way to get the most amount of energy from a battery?
A. Draw current from the battery as rapidly as possible
B. Draw current from the battery at the slowest rate needed
C. Reverse the leads when the battery reaches the 1/2 charge level
D. Charge the battery as frequently as possible

Q. 28. What formula is used to calculate current in a circuit?
A. Current (I) equals voltage (E) multiplied by resistance (R)
B. Current (I) equals voltage (E) divided by resistance (R)
C. Current (I) equals voltage (E) added to resistance (R)
D. Current (I) equals voltage (E) minus resistance (R)

Q29. What formula is used to calculate voltage in a circuit?
A. Voltage (E) equals current (I) multiplied by resistance (R)
B. Voltage (E) equals current (I) divided by resistance (R)
C. Voltage (E) equals current (I) added to resistance (R)
D. Voltage (E) equals current (I) minus resistance (R)

Q30. What formula is used to calculate resistance in a circuit?
A. Resistance (R) equals voltage (E) multiplied by current (I)
B. Resistance (R) equals voltage (E) divided by current (I)
C. Resistance (R) equals voltage (E) added to current (I)
D. Resistance (R) equals voltage (E) minus current (I)

Q31. What is the resistance of a circuit when a current of 3 amperes flows through a resistor connected to 90 volts?
A. 3 ohms
B. 30 ohms
C. 93 ohms
D. 270 ohms

Q32. What is the resistance in a circuit where the applied voltage is 12 volts and the current flow is 1.5 amperes?
A. 18 ohms
B. 0.125 ohms
C. 8 ohms
D. 13.5 ohms

Q33. What is the current flow in a circuit with an applied voltage of 120 volts and a resistance of 80 ohms?
A. 9600 amperes
B. 200 amperes
C. 0.667 amperes
D. 1.5 amperes

Q34. What is the voltage across the resistor if a current of 0.5 amperes flows through a 2 ohm resistor?
A. 1 volt
B. 0.25 volts
C. 2.5 volts
D. 1.5 volts

Q35. What is the voltage across the resistor if a current of 1 ampere flows through a 10 ohm resistor?
A. 10 volts
B. 1 volt
C. 11 volts
D. 9 volts

Q36. What is the voltage across the resistor if a current of 2 amperes flows through a 10 ohm resistor?
A. 20 volts
B. 0.2 volts
C. 12 volts
D. 8 volts

Q37. What is the current flowing through a 100 ohm resistor connected across 200 volts?
A. 20,000 amperes
B. 0.5 amperes
C. 2 amperes
D. 100 amperes

Q38. What is the current flowing through a 24 ohm resistor connected across 240 volts?
A. 24,000 amperes
B. 0.1 amperes
C. 10 amperes
D. 216 amperes

Q39. What is the formula used to calculate electrical power in a DC circuit?
A. Power (P) equals voltage (E) multiplied by current (I)
B. Power (P) equals voltage (E) divided by current (I)
C. Power (P) equals voltage (E) minus current (I)
D. Power (P) equals voltage (E) plus current (I)

Q40. How much power is represented by a voltage of 13.8 volts DC and a current of 10 amperes?
A. 138 watts
B. 0.7 watts
C. 23.8 watts
D. 3.8 watts

Q41. How much power is being used in a circuit when the voltage is 120 volts DC and the current is 2.5 amperes?
A. 1440 watts
B. 300 watts
C. 48 watts
D. 30 watts

Q42. How can you determine how many watts are being drawn by your transceiver when you are transmitting?
A. Measure the DC voltage and divide it by 60 Hz
B. Check the fuse in the power leads to see what size it is
C. Look in the Radio Amateur's Handbook
D. Measure the DC voltage at the transceiver and multiply by the current drawn when you transmit

Q43. How many amperes are flowing in a circuit when the applied voltage is 120 volts DC and the load is 1200 watts?
A. 20 amperes
B. 10 amperes
C. 120 amperes
D. 5 amperes

Q44. How many milliamperes is the same as 1.5 amperes?
A. 15 milliamperes
B. 150 milliamperes
C. 1500 milliamperes
D. 15000 milliamperes

Q45. What is another way to specify the frequency of a radio signal that is oscillating at 1,500,000 Hertz?
A. 1500 kHz
B. 1500 MHz
C. 15 GHz
D. 150 kHz

Q46. How many volts are equal to one kilovolt?
A. one one-thousandth of a volt
B. one hundred volts
C. one thousand volts
D. one million volts

Q47. How many volts are equal to one microvolt?
A. one one-millionth of a volt
B. one million volts
C. one thousand kilovolts
D. one one-thousandth of a volt

Q48. How many watts does a hand-held transceiver put out if the output power is 500 milliwatts?
A. 0.02 watts
B. 0.5 watts
C. 5 watts
D. 50 watts

This quiz  has been compiled by VU3PLP - An Active HAM (Amateur Radio Operator) from Bhuvaneshwar Orissa. Rajesh also operates website for Orissa HAMS which provides details of amateur radio activity in Orissa.

To read the answers and to check out more quiz on electronics, HAM Radio and other topics in Ham Radio Exam Practice section.

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