1.The frequency 145 MHz has an approximate wavelength of 2 meters 40 meters 20 meters 10 meters
2. What is the unit of inductance henry ohm hertz none of the above
3. What is the unit of capacitance farad ohm hertz none of the above
4. What is the unit of resistance mho ohm farad none of the above
5. Copper is an example of conductor semi-conductor insulator none of the above
6. In order to protect the station from lightning, all antenna system and equipment should be grounded terminated shielded painted
7. The frequency range 144 MHz to 146 MHz is within VLF band HF band VHF band UHF band
8. The longer the copper wire, the the lower is the resistance of the wire the higher is the resistance of the wire the stronger is the signal received none of the above
9. Two identical resistors are connected in series, what is the resultant resistance one fourth the value of one resistance half the value of one resistor twice the value of one resistor none of the above
10. Ohm's law is stated in the following formula E equals I/R E equals IR R equals I/E none of the above
11. The use of a key-operated switch is recommended in order to prevent unwanted radiation conserve electricity prolong equipment life prevent operation of unauthorized persons
12. Audio frequency range is from 300 Hz to 30 KHz 30 Hz to 300 KHz 30 Hz to 30 KHz none of the above
13.Ammeter is use to measure resistance capacitance current none of the above
14. Ohmmeter is use to measure resistance capacitance inductance none of the above
15. Voltmeter is use to measure voltage current wattage none of the above
16. When the current passes through a path of lesser resistance thereby destroying the fuse in a circuit, we say the circuit has low fuse resistance wrong fuse wattage open circuited short circuited
17. One thousand watts is sometimes written as 100 watts 10,000 watts 1,000 kilowatts 1 kilowatt
18. Rubber is an example of conductor resistor insulator inductance
19. The terminal voltage of an ordinary flashlight battery is 1.0 volt 1.2 volt 1.45 volt 1.5 volt
20. Two identical capacitors are connected in parallel, what is the total capacitance? half the value of one capacitor twice the value of one capacitor one fourth the value of one capacitor none of the above 21. To produce higher output voltage, dry cells should be connected in series parallel direct none of the above 22. Very high frequency (VHF) range is from 300 KHz to 3 MHz 3 MHz to 30 MHz 30 MHz to 300 MHz 300 MHz to 3 GHz 23. The larger the diameter of a copper wire, the lower is the resistance higher is the resistance lower is the current none of the above 24. An open circuit has a resistance of infinity 1 kiloohm zero none of the above 25. What should you do to prevent shock when working on a high voltage power supply? disconnect the power supply use anti-static tool use 110 Volts supply discharge the filter capacitors
Score = Correct answers:
