Es&t019
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.
- 1.
Another term for a single microwave link is a:
- A.
Section
- B.
Hop
- C.
Skip
- D.
Jump
Correct Answer
B. Hop -
- 2.
Microwave systems use:
- A.
FM
- B.
SSB
- C.
QAM
- D.
All of the above
Correct Answer
D. All of the above -
- 3.
The typical reliability of a microwave system is:
- A.
90%
- B.
99%
- C.
99.9%
- D.
99.99%
Correct Answer
D. 99.99% -
- 4.
A typical microwave system uses a transmitted power of about:
- A.
2 watts
- B.
20 watts
- C.
200 watts
- D.
10 watts
Correct Answer
A. 2 watts -
- 5.
In analog microwave systems, additional repeaters increase the:
- A.
Reliability
- B.
Noise level
- C.
Jitter
- D.
Power
Correct Answer
B. Noise level -
- 6.
In digital microwave systems, additional repeaters increase the
- A.
Reliability
- B.
Noise level
- C.
Jitter
- D.
Power
Correct Answer
C. Jitter -
- 7.
LOS stands for:
- A.
Loss of Skip
- B.
Loss of Signal
- C.
Line of Sight
- D.
Line of Signal
Correct Answer
C. Line of Sight -
- 8.
Too much antenna gain causes:
- A.
A very narrow microwave beam
- B.
A very wide microwave beam
- C.
Excessive noise
- D.
High power consume
Correct Answer
A. A very narrow microwave beam -
- 9.
The microwave signal path should clear obstacles by at least:
- A.
60% of the Faraday zone
- B.
60% of the Fresnel zone
- C.
60% of the height of the antenna tower
- D.
60% of the highest obstacle height
Correct Answer
B. 60% of the Fresnel zone -
- 10.
Satisfactory performance of an analog microwave system is defined as:
- A.
A carrier-to-noise ratio that exceeds a given value
- B.
An ERP level that exceeds a given value
- C.
An energy-per-hertz level that exceeds a given value
- D.
None of the above
Correct Answer
A. A carrier-to-noise ratio that exceeds a given value -
- 11.
Satisfactory performance of a digital microwave system requires a:
- A.
Low level of transmitted power
- B.
High level of ERP
- C.
Good energy per bit per transmitted Watt ratio
- D.
Good energy per bit per noise density ratio
Correct Answer
D. Good energy per bit per noise density ratio -
- 12.
Fading is caused by:
- A.
Multipath reception
- B.
Attenuation due to weather
- C.
Ducting
- D.
All of the above
Correct Answer
D. All of the above -
- 13.
The effects of fading due to multipath reception are often reduced using:
- A.
Diversity
- B.
Power
- C.
High-gain antennas
- D.
Frequency selector
Correct Answer
A. Diversity -
- 14.
Repeaters are used in a microwave system:
- A.
Backup
- B.
When distance exceeds line-of-sight
- C.
Regenerative type
- D.
Increase power
Correct Answer
B. When distance exceeds line-of-sight -
- 15.
Microwave repeaters can be:
- A.
IF type
- B.
Baseband type
- C.
Regenerative type
- D.
All of the above
Correct Answer
D. All of the above -
- 16.
An advantage of digital techniques over analog in a microwave system is:
- A.
Less bandwidth is required
- B.
Accumulation of noise is reduced
- C.
It requires less power
- D.
All of the above
Correct Answer
B. Accumulation of noise is reduced -
- 17.
MMDS stands for:
- A.
Multichannel Microwave Distribution System
- B.
Multipoint Microwave Distribution System
- C.
Multichannel Multipoint Distribution System
- D.
Multiple Microwave Distribution Systems
Correct Answer
C. Multichannel Multipoint Distribution System -
- 18.
LMDS stands for:
- A.
Local Microwave Distribution System
- B.
Local Multipoint Distribution System
- C.
Local Multichannel Distribution System
- D.
Local Multichannel Distribution System
Correct Answer
B. Local Multipoint Distribution System -
- 19.
LMDS is:
- A.
Bidirectional
- B.
Unidirectional
- C.
Multidirectional
- D.
Omnidirectional
Correct Answer
A. Bidirectional -
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-
Current Version
-
Sep 21, 2015Quiz Edited by
ProProfs Editorial Team -
Sep 20, 2012Quiz Created by
Catherine Halcomb
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