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a two farad and a four farad capacitor are connected in series what single capacitance is equivalent to this combination a 2-farad and a 4-farad
five coulombs of charge are placed on a thin-walled conducting shell once the charge has come to rest the electric potential inside the hollow
for an infinite sheet of positive charge the electric field linesa run parallel to the sheet of chargeb are perpendicular to the sheet of charge and
for a negative point charge the electric field vectorsa circle the chargeb point radially in toward the chargec point radially away from the charged
induced electric currents can be explained using which of the following lawsa gausss lawb faradays lawc ohms lawd amperes lawansinduced electric
if 10 joules of energy are required to move 5 coulombs of charge between two points the potential difference between the two points is equal to how
lsolectric precipitation at isoelectric ph you already know a protein does not have any net charge so they easily
commutatorthe commutator is a form of rotating switch placed among the armature and external circuit and so arranged that it will reverse the link
armature core it houses the armature conductors or coils and causes them to rotate and as cuts the magnetic flux of field magnets it also
field system the object of the field system is to make a uniform magnetic field within which the armature rotates it consists of four parts- yoke
thevenins theorem can be stated as follows any two terminal network having a number of emf sources and resistances can be changed by equivalent
nortanstheorem can be stated as follows any two-terminal active network having voltage source and resistances when viewed from its output terminals
non- linear circuitit can be described as that circuit whose parameters change with voltage or
linear circuit-it can be described as one whose parameters are constant ie they do not change with voltage or
active network-it can be described as a network which contains one or more than single source of emf in
passive network-it can be described as a network which contains no source of emf in
discharging the cell is connected across some load during discharging as the direction of current by the cell is reversed during discharging the
definition of semiconductorsphotovoltaic pv cells are made of special materials known as semiconductors like as silicon which is currently the most
solar cells the solar cells that we see on calculators and satellites are photovoltaic cells or modules modules are easily a group of cells
advantages of high transmission voltage a decreases volume of conductor materialb enhance in transmission efficiencyc reduces percentages line
phase advancers phase advancers are used to better the power factor of induction motors the low power factor of an induction motor is because of the
synchronous condensers a synchronous motor takes a leading current when over-excited and thus behaves as a capacitor an over-excited synchronous
static capacitors the power factor can be improved by between capacitors in parallel with the equipment operating at lagging power factor the
power factor improvement the low power factor is because of the fact that most of the power loads are inductive and thus take lagging
disadvantages of low power factorgreater conductor size to transfer or distribute a fixed amount of power at constant voltage the conductor will have