- What is a voltage across a capacitor of 100 pf 14.30 MHz. if the current through the capacitor is mA?
- 5.6 V
- 14.3 V
- 56 V
- 100 V

- The frequency range of 430 MHz in the ___ band?
- UHF
- VHF
- HF
- MF

- An example of semiconductor is?
- Copper
- Water
- Silicon
- Silver

- Three resistors are connected in parallel. What is the total resistance if the R1=100 ohms, R2=200 ohms, R3 is 300 ohms?
- 600 ohms
- 54 ohms
- 200 ohms
- 100 ohms

- What is the value of the resistor whose markings are violet, blue, red, gold?
- 760 ohms +/-5%
- 67 ohms +/-15%
- 7600 ohms+/-5%
- 100 ohms +/-3%

- Two non interacting capacitors are in series. One has a value of 10 Pf, the other of 20 Pf. What is the resulting reactance in a circuit operating at 28 MHz?
- 852
- 58
- 2899
- 11

- Two resistors having a value of 15 ohms and 7 ohms are connected in series across a 220 volt source. What is the voltage across 7 ohms?
- 70 volts
- 150 volts
- 80 volts
- 1000 volts

- What is the wavelength (in meters) of an RF wave whose frequency is 14 MHz?
- 14 meters
- 21 meters
- 2 meters
- 140 meters

- A ____ is an instrument that measures resistance less than one ohms?
- Wheatstone bridge
- S.W.R. Meter
- Voltmeter
- Radio Watch

- What is the total gain of 2 resistors connected in cascade, if each has a gain of 10 db?
- 10 dB
- 40 dB
- 200 dB
- 20 dB

- How much power shall be converted to heat in a 4000 ohms-resistors, if the current is 350 mA?
- 490 watts
- 4900 watts
- 1400 watts
- 140 watts

- The insulator between capacitor plates is called a?
- Electric air
- Dielectric
- Layer
- Platter

- Unit of admittance?
- Siemens
- Ohm
- Watt
- Kirchhoff

- The condition in an ac circuit containing both capacitive and inductive reactance in which reactances are equal?
- Echolink
- Essence
- Reaction
- Resonance

- Decimal equivalent of 1 nanofarad?
- 0.000000000001
- 0.000000001
- 0.000001
- 0.01

- What happens with the resistance of a copper wire if we increase its diameter?
- Increase
- Reduced
- nothing
- shortcut

- The frequency 54 GHz is under what classification of frequency?
- VHF
- UHF
- EHF
- HF

- A copper wire has a resistance of 10 ohms/meter. What is the resistance if the length is 40 meters?
- 4000 ohms
- 400 ohms
- 40 ohms
- 100 ohms

- The characteristics of electronic equipment that permits undesired responses when subjected to electromagnetic energy?
- Immunity
- Community
- Disability
- Vulnerability

- To be able to have a 4.5 volts dc, one may use this combination of flashlight batteries:
- 3 times1.5V in parallel
- 3 times 1.5V in series
- 2 times 0.5V in series
- 6 times 1.5V in series

- A resistive load of 3000 ohms is connected across a resonant circuit in which the inductive and capacitive reactances are each 300 ohms. What is the circuit Q?
- 6
- 50
- 100
- 10

- The main problem of these phenomena is that it increases the effective resistance of a wire for ac at moderate to high frequencies, compared with the resistance of the same wire at direct current (dc) and low ac frequencies.
- Skip Effect
- Skin Effect
- Null Effect
- Head Effect

- A series circuit consisting of an inductive reactance of 100 ohms and a resistance of 75 ohms is connected to a source of 250 volts. What is the phase angle?
- 53
- 175
- 530
- 250

- A series circuit consisting of an inductive reactance of 100 ohms and a resistance of 75 ohms is connected to a source of 250 volts. What is the power factor?
- 10%
- 20%
- 60%
- 75%

- Dry cells are connected in ___ for maximum current?
- Parallel
- Seriell
- Cross
- Reverse

- How much current is flowing through the resistor if the resistance is 35 ohms and the voltage is 140 volts?
- 4 amperes
- 40 amperes
- 0,4 amperes
- 75 amperes

- is the audio frequency range?
- 300 Hz-3000 KHz
- 30 Hz-30 KHz
- 3 Hz-300 KHz
- 3 Hz-3000 KHz

- What is the frequency of operation when wavelength of the radio signal is 3 meters long?
- 10 MHz
- 300 MHz
- 150 MHz
- 100 MHz

- The frequency band 30-300 MHz is also known as?
- MF
- HF
- VHF
- UHF

- What is the value of resistor with color markings blue, gray, brown?
- 68 ohms
- 680 ohms
- 6,8 ohms
- 68 Kiloohms

- capacitor with a reactance of 16 ohms is in parallel with a resistor of 12 ohms. What is the resulting impedance?
- 12
- 10
- 6
- 192

- A capacitor with a reactance of 16 ohms is in parallel with a resistor of 12 ohms. What is the resulting phase angle?
- -6.9 degrees
- -36.9 degrees
- +36.9 degrees
- +12 degrees

- The prefix GIGA means, ten raised to the power of__?
- 12
- 9
- 6
- 3

- The main characteristics of a diode is?
- Current flows in none directions
- Current flows in one direction
- Current flows in both directions
- Current flows in left direction

- The instrument used to monitor relative RF output when the transmitter and antenna are being adjusted is called?
- Wheatstone Bridge
- Grid-dip meter
- Multimeter
- S.W.R. - Meter

- A flow of electrons forced into motion by voltage is known as?
- Current
- Energy
- Resistance
- Capacity

- What is the bandwidth of a series resonant circuit operating on 145 MHz, with a Qu of 100?
- 145 MHz
- 14.5 MHz
- 0.145 MHz
- 1.45 MHz

- Two non interacting inductances are in series. Each has a value of 4.0 Uh, and the operating frequency is 3.8 MHz. What is the resulting reactance?
- 4
- 96
- 48
- 4,8

- What is the peak voltage on a capacitor if the RMS voltage of a sinusoidal waveform is 150 V ac?
- 212 Volts
- 21,2 Volts
- 300 Volts
- 150 Volts

- AM radio station with a frequency of 666 KHz, is under what classification?
- MF
- HF
- VHF
- SHF

- What is the electric pressure that causes current to flow?
- Ampere
- Voltage
- Currency
- Ohm

- Power factor of a purely resistive circuit?
- 0,5
- 3
- 2
- 1