WorksheetsCommunications 4 - Quiz 2
Total questions: 12
Worksheet time: 27mins
What are the two primary requirements of a transmission line?
Maximum attenuation and maximum radiation
Minimum attenuation and minimum radiation
Maximum signal distortion and loss
Minimum impedance and high power loss
Which of the following factors affect the characteristics of a transmission line?
Electrical properties
Physical properties
Both a and b
None of the above
The resistance of a transmission line depends on which factor?
Dielectric material
Cross-sectional area of the conducting material
Distance between conductors
Signal frequency
Which of the following describes the inductance of a transmission line?
Opposition to current flow
Ability to store energy in a magnetic field
Measure of power loss per unit length
Resistance to electric fields
What is the function of conductance (G) in a transmission line?
Opposes changes in voltage
Represents leakage current due to imperfect insulation
Stores energy in an electric field
Minimizes power transmission efficiency
What is another name for characteristic impedance (Zo)?
Surge impedance
Transmission resistance
Power coefficient
Reflection index
What does the velocity factor (VF) of a transmission line indicate?
The ratio of signal velocity to the speed of light
The percentage of signal attenuation
The power loss per unit length
The bandwidth of the transmission line
If a transmission line has a time delay of 75 ns at a frequency of 4 MHz, what does this represent?
Phase shift per wavelength
Total attenuation per unit distance
Resistance of the conductor
Signal distortion factor
What is the typical velocity factor range for coaxial cables?
0.2 to 0.4
0.4 to 0.6
0.6 to 0.8
0.8 to 1.0
Which parameter primarily affects time delay in a transmission line?
Resistance and capacitance
Inductance and capacitance
Conductance and resistance
Impedance and frequency
A lossless transmission line has an inductance per unit length of 25 mH/m and a capacitance per unit length of 100 nF/m. Calculate the characteristic impedance (Zo).
(a)
A coaxial transmission line has an inner conductor diameter of 2 mm and an outer conductor diameter of 10 mm. The dielectric has a relative permittivity of 2.5. Compute the characteristic impedance.
(a)
