పరికరం యొక్క అవుట్పుట్ వద్ద శక్తి స్థాయి 50 dBm. కింది ఎంపికల నుండి శక్తి యొక్క సంపూర్ణ విలువను గుర్తించండి.

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ALP CBT 2 Electronic Mechanic Previous Paper: Held on 21 Jan 2019 Shift 1
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  1. 1 W
  2. 100 W
  3. 500 W
  4. 10 W

Answer (Detailed Solution Below)

Option 2 : 100 W
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Detailed Solution

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భావన :

dBm అనేది స్థిరమైన సూచన స్థాయికి సంబంధించి శక్తి స్థాయి నిష్పత్తిని సూచించడానికి ఉపయోగించే కొలత యూనిట్.

dBmతో, సూచన స్థాయి 1 mW (మిల్లీవాట్).

dBmలో శక్తి ఇలా వ్యక్తీకరించబడింది:

\(P(dBm)=10log_{10}(\frac{P}{1m})\)

P = పవర్ dBmలో వ్యక్తీకరించబడుతుంది

అప్లికేషన్ :

dBm = 50లో అవుట్‌పుట్ పవర్ ఇవ్వబడింది

\(50=10log_{10}(\frac{P}{1m})\)

\(5=log_{10}(\frac{P}{1m})\)

రెండు వైపులా యాంటిలాగ్ తీసుకుంటే, మనకు లభిస్తుంది:

\(10^5=\frac{P}{1m}\)

P = 10 5 × 10 -3 W

P = 100 W

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