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WorksheetsSATCOM
Total questions: 15
Worksheet time: 8mins
A typical OTDR consists of ----
A display
Information storage unit
Data acquisition and processing module
All of the above
Identify the scattering that is caused by microscopic non-uniformities making light rays partially scatter.
Mie Scattering
Rayleigh Scattering
Stimulated Brillouin
Raman Scattering
Identify
the absorption loss that is caused by valence electrons in the silica
material of fibers.
Infrared
(IR) Absorption
Extrinsic
absorption loss
Ultra
violet (UV) Absorption
Ion
resonance Absorption
---------------
occur in fibers due to differences in thermal contraction rates between core
& cladding material.
Absorption
Losses
Micro
bending losses
Scattering
Losses
Coupling
Losses
Identify among the following is/are responsible for generating attenuation of an optical power in fiber optic cable
Absorption
Scattering
Waveguide effect
All of the above
________ dispersion is caused by the difference in the propagation times of light rays that take different paths along a fiber.
Material
dispersion
Wavelength
dispersion
Modal
dispersion
Delay
dispersion
Material dispersion is caused by the _____________
Wavelength
dependence of the index of refraction
Wavelength
independence of the index of refraction
Dependence
of the propagation constant on the mode number
Independence
of the propagation constant on the mode number
-------- type of fiber has the highest modal dispersion
Step-index multimode
Graded index multimode
Step-index single mode
Graded index mode
In a link loss budget setup, following data is given Transmission length (L) = 20kms, Three connectors each with 2 dB loss, light source to fiber interface loss= 1.9 dB, fiber to detector interface loss = 2.1 dB, cable attenuation = 0.5dB/km. Compute total optical power loss.
10 dB
20 dB
30 dB
40 dB
The term power budgeting in optical fiber communication refers to __________
the cost of cables, connectors, equipment, and installation
the loss of power due to defective components
the total power available minus the attenuation losses
the comparative costs of fiber and copper installations
When is the speed of the satellite maximum in an elliptical orbit
Retrograde
Posigrade
Perigee
Apogee
The time period taken by the satellite to complete one orbit is called as -----
Lapsed time
Time period
Sidereal period
Unit frequency
What is the angle of inclination for a satellite following an equatorial orbit
0°
180°
45°
90°
The angle between the line from the earth station’s antenna to the satellite and the line between the earth station’s antenna and the earth’s horizon is called as -----
Angle of inclination
Angle of elevation
Apogee angle
LOS angle
The number of days when Earth's shadow falls on a geosynchronous satellite is………………………
88
277
5
10
