All Questions - CS Electrical & Electronics

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Mutual information should be
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In digital image coding which image must be smaller in size?
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While recovering signal, which gets attenuated more?
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A code is a mapping from
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Which reduces the size of the data?
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The unit of average mutual information is
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Which is more efficient method?
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Coded system are inherently capable of better transmission efficiency than the uncoded system.
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The self information of random variable is
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Binary Huffman coding is a
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Lempel-Ziv algorithm is
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When X and Y are statistically independent, then I (x,y) is
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When the base of the logarithm is 2, then the unit of measure of information is
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When probability of error during transmission is 0.5, it indicates that
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Entropy of a random variable is
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The event with minimum probability has least number of bits.
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Self information should be
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The method of converting a word to stream of bits is called as
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A transponder is a satellite equipment which
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A geosynchronous satellite
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A satellite beam that covers almost 42.4% of the earth’s surface is called ……………
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As the height of a satellite orbit gets lower, the speed of the satellite ……………
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…………… is considered as the unsolved problem in satellite system.
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………….is a loss of power of a satellite downlink signal due to earth’s atmosphere.
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. ……………. collects very weak signals from a broadcast satellite
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VSAT was made available in …….
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What band does VSAT first operate?
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A helical antenna is used for satellite tracking because of …………..
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A satellite signal transmitted from a satellite transponder to earth’s station is ……….
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The number of days when Earth’s shadow falls on a geosynchronous satellite is
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The owner of a communication satellite is usually required to keep the spacecraft on station at its assigned place in the geosynchronous orbit with an accuracy of __________ degree.
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Satellite launch sites are invariably located on Eastern seaboards to ensure that
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India’s first domestic geostationary satellite 1NSAT-IA was launched on 10th April 1982 from
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To make antenna more directional, either its size must be increased or
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The location of AsiaSat I.
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What kind of battery used by older satellites ?
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The earth area covered by a satellite radio beam is known as ……..
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Satellite engine uses …………
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Calculate percentage strain at break for a Si-O bond with a fracture strength of 3.52*1010Nm-1 and Young’s modulus of 9 *109Nm-1 .
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An Si-O bond with a Young’s modulus of 9*1010Nm-1 have an elliptical crack of depth 7nm. The surface energy is 2.29 J. Estimate fracture stress for silica fiber.
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Optical fibers for communication use are mostly fabricated from ___________
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It is not important to cover these optical fibers required for transmission.
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When optical fibers are to be installed in a working environment, the most important parameter to be considered is?
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Fiber mostly suited in single-wavelength transmission in O-band is?
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Standard single mode fibers (SSMF) are utilized mainly for operation in ___________
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A fiber which is referred as non-dispersive shifted fiber is?
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Single mode fibers allow single mode propagation; the cladding diameter must be at least ___________
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The fibers mostly not used nowadays for optical fiber communication system are ___________
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In single mode fibers, which is the most beneficial index profile?
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Multimode graded index fibers use incoherent source only.
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Multimode graded index fibers with wavelength of 0.85μm have numerical aperture of 0.29 have core/cladding diameter of ___________
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Multimode graded index fibers have overall buffer jackets same as multimode step index fibers but have core diameters ___________
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Higher purity than multimode step index fibers.
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Multimode graded index fibers are manufactured from materials with ___________
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Multimode step index fibers have a bandwidth of ___________
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Multimode step index fiber has a large core diameter of range is ___________
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A typically structured glass multimode step index fiber shows as variation of attenuation in range of ___________
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Multimode step index fiber has ___________
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In lens antenna, what kind of wave energy is transformed into plane waves?
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What is the functioning role of an antenna in receiving mode?
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