अनुमार्गक और गेटवे में अंतर बताएं।
अनुमार्गक (Router) और गेटवे (Gateway) दोनों नेटवर्क उपकरण हैं, लेकिन इनके कार्य और भूमिका में कुछ प्रमुख अंतर होते हैं।
अनुमार्गक एक ऐसा नेटवर्क डिवाइस है, जिसका मुख्य कार्य डेटा पैकेट्स को एक नेटवर्क से _________ ___ ______ ___ _______ _____.
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VSWR मापन की व्यवस्था आरेख की सहायता से स्पष्ट करें।
State with reasons whether the following statements are True or False.
i) Sound wave (longitudinal wave) propagation is the most preferred mode in modern communication systems.
ii) Scanning format at TV transmitter and receiver end need not be the same.
iii) Skin depth increases with frequency.
iv) Modulation can be used to reduce noise present in the input signal.
v) Interleaving of messages helps in reducing hum noise in a signal.
vi) Splicing involves soldering.
vii) CCD camera requires electron gun for scanning.
viii) Image frequency can be rejected by tuned IF amplifier.
ix) Centronic port of a computer is a serial port.
x) Blue tooth works only for mobile devices.
अनुमार्गक और गेटवे में अंतर बताएं।
Explain, how the gain is increased by an antenna array.
A plane wave is described by an electric field
Ε = 180 cos108 (2
t-100y).
What is its i) frequency in Hz, ii) wave number, iii) phase velocity, iv) wavelength and v) direction of propagation?
तीन अंकों X, Y, Z को जोड़कर उत्तर को स्मृति-स्थान D में रखने के लिए आवश्यक अनुदेश लिखें।
In an optical fibre the refractive index of core is 1.53 and that of cladding is 1.49. Calculate the critical angle and acceptance angle when the fibre is immersed in glycerine. Refractive index of glycerine is 1.47.