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the circuit shown below is a prototype 4th - order low-pass filter which is required to meet the specification given however the specification is not
the armature of a dc machine has a resistance of 03 and is connected to a 200v supply calculate the emf generated when it is running a as a generator
a 6-pole armature has 1000 conductors and a flux per pole of 40mwb determine the emf generated when running at 600 revmin when a lap wound b wave
q basic aspects of electromechanical energy converterswhereas detailed differences and particularly challenging problems emerge among various machine
q what are the different types of patrolling when these are adopted what are points to be considered while preparing the charts ans- types of
the armature of a four-pole dcmachine has a simplex lap wound commutator winding which has the number of parallel paths equal to the number of poles
a two-pole three-phase 60-hz wye-connected round-rotor synchronous generator has na 12 turns per phase in each armature phase winding and flux per
compute the efficiency of the transformer of example corresponding to a full load 08 power factor lagging and b one-half load 06 power factor lagging
the transformer of example is supplying full load ie rated load of 50 kva at a rated secondary voltage of 240 v and 08 power factor lagging
a single-phase 50-kva 2400240-v 60-hz distribution transformer has the following parametersresistance of the 2400-v winding r1 075resistance of the
q show transformer equivalent circuitstransformers come in various sizes from very small weighing only a few ounces to very large weighing hundreds
q basic definition of electromagnetisma basic understanding of electromagnetism is essential to the study of electrical engineering because it is the
q what do you mean by load factorthe two components of electric service are demand and energy demand is the maximum level of real power which the
q define transmission-system efficiencythe transmission-system efciency is dened as the ratio of the real power delivered to the receiving-end bus to
q find the line current after the addition of capacitor banka 60-hz three-phase motor draws 25 kva at 0707 lagging power factor from a 220-v source
ac power has significant practical advantages over dc power in generation transmission and distribution one major drawback of the single-phase
q planning and research in power systemenergy research worldwide is assuming top priority in particular because of economic en - vironmental and
q use of computers in power systemsthe control and stability of any electric power system is indeed extremely important in particular when a system
q present and future trends in power systemsaccording to the edison electric institute electricitys share of us primary energy was almost 36 in 1989
q introduction to power systemsthomas a edisons work in 1878 on the electric light led to the concept of a centrally located power station with
q show principal source of energythe principal source of energy comes from the burning of fossil fuels such as coal and oil to generate steam which
q illustrate ac power systemselectric power is indispensable for any modern society our use and demand for electric power grows annually at the rate
q dtl and ttl logic circuitsbipolar transistorswere the first solid-state switching devices commonly used to implement digital logic circuits in the
q what do you eman by digital circuitsthe use of nonlinear devices bjt and fet in constructing linear amplifiers although these devices are
consider a cs jfet amplifier with the following parameters r1 350 k r2 100 k rss 1200 rd 900 rl 1000 rs 2000 ro 15 kgm 6 times 10-3 scgs