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classify data networksdata network classificationsdata networks are classified as per to their geographical coverage- wide area networks wans-
a rod of 80mm diameter and 10mm length with thermal conductivity 16wm-deg protrudes from a surface at 160 oc the rod is exposed to air at 30 oc with
what are the major systems of a telecommunication network the main systems of any telecommunication network may contain the following main systemsa
describe nusselt number reynolds number and prandtl number get the relation between these three for a circular cylinder losing heat in forced
define different regimes of boiling and depict their ranges on a excess temperature curve us heat flux also distinguish between laminar film
derive 3-d non-steady state conduction equation in spherical co-ordinates explain the assumption involvedthe hot combustion gases of a furnance are
explain public switched telephone networkpstn public switched telephone network this is public switched telephone network pstn which accommodates two
q describe the term lsquocritical insulation thickness what is its significance derive an expression for the critical insulation radius of a
explain common channel signallingcommon channel signalling signaling systems connection the variety of transmission systems switching systems and
the average heat transfer co efficient for flow of 100o c air over a flat plate is calculated by observing the temperature time history of a 3mm
explain congestioncongestion this is uneconomic to provide sufficient equipment to carry entire traffic that could possibly be given to a
a plane wall thermal conductivity 102 wmoc of 100 mm thickness and area 3m2 has steady surface temperature of 170oc and 100ocevaluate -i the
explain services of application layerapplication layeras the highest layer within the osi reference model the application layer gives services to the
explain briefly the function of different layers which are covered under end to end layer connectivitydifferent layer are as follows1 transport
explain newtons law of cooling what do you mean by convective heat transfer coefficient what are the factors on which co-efficient of convective
state required features of fourier law what are the factors on which co-efficient of thermal conductivity k depends upon write the unit of
what layers are covered under end to end layer connectivity the layers 4 to 7 of iso-osi reference model communicate along with peer entities into
define the difference modes of heat transfer with examples state one system where heat transfer takes place because of all modes of heat
what do you mean by heat transfer compare i work done with heat transfer ii thermodynamics with heat transfer state whether heat transfer is a path
what is the need of a hybrid in telephone networks digital exchanges need receive and transmit signals upon separate two-wire circuits it calls for
derive the mathematical heat conduction equation through a composite wall determine thermal contact resistance
what is the difference between counter flow and parallel flow heat exchange classify heat exchange on the basis of constructional features and
derive the mathematical equation for overall heat transfer-coefficient through a single wall aslo explain physical significance of thermal
a steel pipe with 50 mm od is covered with a 64 mm asbestos insulation followed by a 25 mm layer of fiber-glass insulation k 00485 wmk the pipe
what is meant by common controlin several switching systems the control subsystem may be an integral part of the switching network itself this system