Electronics and Communication Engineering (ECE) Exam  >  Electronics and Communication Engineering (ECE) Questions  >  An amplifier has a standard spot noise figure... Start Learning for Free
An amplifier has a standard spot noise figure F0  = 6.31 (8.0 dB). The amplifier, that is used to amplify the output of an antenna have antenna temperature of T= 180 K
Que: The operating spot noise figure is
  • a)
    3.2 dB
  • b)
    6.4 dB
  • c)
    9.8 dB
  • d)
    11.9 dB
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
An amplifier has a standard spot noise figure F0=6.31 (8.0 dB). The am...
View all questions of this test
Most Upvoted Answer
An amplifier has a standard spot noise figure F0=6.31 (8.0 dB). The am...
Calculating the operating spot noise figure:
1. Given values:
- Standard spot noise figure (F0) = 6.31 (8.0 dB)
- Antenna temperature (Ta) = 180 K
2. Formula:
The operating spot noise figure (F) can be calculated using the formula:
F = F0 * (1 + (Ta/290))
3. Calculations:
F = 6.31 * (1 + (180/290))
F = 6.31 * 1.621
F = 10.22
4. Converting to dB:
To convert the operating spot noise figure to dB:
F(dB) = 10 * log10(F)
F(dB) = 10 * log10(10.22)
F(dB) = 10 * 1.01
F(dB) ≈ 10.1 dB
5. Answer:
The operating spot noise figure is approximately 10.1 dB.
Therefore, the correct option is not listed in the given choices.
Attention Electronics and Communication Engineering (ECE) Students!
To make sure you are not studying endlessly, EduRev has designed Electronics and Communication Engineering (ECE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Electronics and Communication Engineering (ECE).
Explore Courses for Electronics and Communication Engineering (ECE) exam

Top Courses for Electronics and Communication Engineering (ECE)

An amplifier has a standard spot noise figure F0=6.31 (8.0 dB). The amplifier, that is used to amplify the output of an antenna have antenna temperature of Ta= 180 KQue:The operating spot noise figure isa)3.2 dBb)6.4 dBc)9.8 dBd)11.9 dBCorrect answer is option 'C'. Can you explain this answer?
Question Description
An amplifier has a standard spot noise figure F0=6.31 (8.0 dB). The amplifier, that is used to amplify the output of an antenna have antenna temperature of Ta= 180 KQue:The operating spot noise figure isa)3.2 dBb)6.4 dBc)9.8 dBd)11.9 dBCorrect answer is option 'C'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about An amplifier has a standard spot noise figure F0=6.31 (8.0 dB). The amplifier, that is used to amplify the output of an antenna have antenna temperature of Ta= 180 KQue:The operating spot noise figure isa)3.2 dBb)6.4 dBc)9.8 dBd)11.9 dBCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An amplifier has a standard spot noise figure F0=6.31 (8.0 dB). The amplifier, that is used to amplify the output of an antenna have antenna temperature of Ta= 180 KQue:The operating spot noise figure isa)3.2 dBb)6.4 dBc)9.8 dBd)11.9 dBCorrect answer is option 'C'. Can you explain this answer?.
Solutions for An amplifier has a standard spot noise figure F0=6.31 (8.0 dB). The amplifier, that is used to amplify the output of an antenna have antenna temperature of Ta= 180 KQue:The operating spot noise figure isa)3.2 dBb)6.4 dBc)9.8 dBd)11.9 dBCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electronics and Communication Engineering (ECE). Download more important topics, notes, lectures and mock test series for Electronics and Communication Engineering (ECE) Exam by signing up for free.
Here you can find the meaning of An amplifier has a standard spot noise figure F0=6.31 (8.0 dB). The amplifier, that is used to amplify the output of an antenna have antenna temperature of Ta= 180 KQue:The operating spot noise figure isa)3.2 dBb)6.4 dBc)9.8 dBd)11.9 dBCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of An amplifier has a standard spot noise figure F0=6.31 (8.0 dB). The amplifier, that is used to amplify the output of an antenna have antenna temperature of Ta= 180 KQue:The operating spot noise figure isa)3.2 dBb)6.4 dBc)9.8 dBd)11.9 dBCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for An amplifier has a standard spot noise figure F0=6.31 (8.0 dB). The amplifier, that is used to amplify the output of an antenna have antenna temperature of Ta= 180 KQue:The operating spot noise figure isa)3.2 dBb)6.4 dBc)9.8 dBd)11.9 dBCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of An amplifier has a standard spot noise figure F0=6.31 (8.0 dB). The amplifier, that is used to amplify the output of an antenna have antenna temperature of Ta= 180 KQue:The operating spot noise figure isa)3.2 dBb)6.4 dBc)9.8 dBd)11.9 dBCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice An amplifier has a standard spot noise figure F0=6.31 (8.0 dB). The amplifier, that is used to amplify the output of an antenna have antenna temperature of Ta= 180 KQue:The operating spot noise figure isa)3.2 dBb)6.4 dBc)9.8 dBd)11.9 dBCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Electronics and Communication Engineering (ECE) tests.
Explore Courses for Electronics and Communication Engineering (ECE) exam

Top Courses for Electronics and Communication Engineering (ECE)

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev