Es&t019
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LOS stands for:
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Loss of Skip
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Loss of Signal
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Line of Sight
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Line of Signal
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This QUIZ is made or by product of my continuous research & study about Electronics Engineering to help the Electronics Engineer/Technician Aspirants in passing the Board Examinations.
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- 2.
Another term for a single microwave link is a:
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Section
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Hop
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Skip
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Jump
Correct Answer
A. Hop -
- 3.
The microwave signal path should clear obstacles by at least:
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60% of the Faraday zone
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60% of the Fresnel zone
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60% of the height of the antenna tower
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60% of the highest obstacle height
Correct Answer
A. 60% of the Fresnel zone -
- 4.
Repeaters are used in a microwave system:
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Backup
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When distance exceeds line-of-sight
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Regenerative type
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Increase power
Correct Answer
A. When distance exceeds line-of-sight -
- 5.
Microwave repeaters can be:
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IF type
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Baseband type
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Regenerative type
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All of the above
Correct Answer
A. All of the above -
- 6.
Fading is caused by:
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Multipath reception
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Attenuation due to weather
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Ducting
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All of the above
Correct Answer
A. All of the above -
- 7.
The typical reliability of a microwave system is:
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90%
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99%
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99.9%
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99.99%
Correct Answer
A. 99.99% -
- 8.
Microwave systems use:
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FM
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SSB
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QAM
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All of the above
Correct Answer
A. All of the above -
- 9.
Satisfactory performance of an analog microwave system is defined as:
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A carrier-to-noise ratio that exceeds a given value
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An ERP level that exceeds a given value
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An energy-per-hertz level that exceeds a given value
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None of the above
Correct Answer
A. A carrier-to-noise ratio that exceeds a given value -
- 10.
The effects of fading due to multipath reception are often reduced using:
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Diversity
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Power
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High-gain antennas
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Frequency selector
Correct Answer
A. Diversity -
- 11.
A typical microwave system uses a transmitted power of about:
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2 watts
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20 watts
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200 watts
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10 watts
Correct Answer
A. 2 watts -
- 12.
Too much antenna gain causes:
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A very narrow microwave beam
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A very wide microwave beam
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Excessive noise
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High power consume
Correct Answer
A. A very narrow microwave beam -
- 13.
Satisfactory performance of a digital microwave system requires a:
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Low level of transmitted power
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High level of ERP
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Good energy per bit per transmitted Watt ratio
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Good energy per bit per noise density ratio
Correct Answer
A. Good energy per bit per noise density ratio -
- 14.
LMDS stands for:
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Local Microwave Distribution System
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Local Multipoint Distribution System
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Local Multichannel Distribution System
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Local Multichannel Distribution System
Correct Answer
A. Local Multipoint Distribution System -
- 15.
LMDS is:
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Bidirectional
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Unidirectional
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Multidirectional
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Omnidirectional
Correct Answer
A. Bidirectional -
- 16.
In digital microwave systems, additional repeaters increase the
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Reliability
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Noise level
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Jitter
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Power
Correct Answer
A. Jitter -
- 17.
MMDS stands for:
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Multichannel Microwave Distribution System
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Multipoint Microwave Distribution System
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Multichannel Multipoint Distribution System
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Multiple Microwave Distribution Systems
Correct Answer
A. Multichannel Multipoint Distribution System -
- 18.
In analog microwave systems, additional repeaters increase the:
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Reliability
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Noise level
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Jitter
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Power
Correct Answer
A. Noise level -
- 19.
An advantage of digital techniques over analog in a microwave system is:
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Less bandwidth is required
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Accumulation of noise is reduced
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It requires less power
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All of the above
Correct Answer
A. Accumulation of noise is reduced -
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Current Version
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Sep 21, 2015Quiz Edited by
ProProfs Editorial Team -
Sep 20, 2012Quiz Created by
Catherine Halcomb
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