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q what is efficiency of a transformer efficiency of a transformer is described as the ratio of output power to the input powereta output power input
q write the equation of a 25 cycle current sine wave having rms value of 30 adata nu 25 hz irms
q give the differences between af choke and rf choke audio - frequency af chokesradio frequency r f chokes or high frequency hf chokesa used in low
q what are the methods of inducing emf in a circuit the induced emf is able to be produced by changinga the magnetic induction bb area enclosed by
q define self inductance the coefficient of self induction of a coil is numerically equivalent to the opposing emf induced in the coil when the rate
q state flemings right hand rule flemings right hand rule the middle finger the forefinger and the thumb of the right hand are held in the three
q state lenzs law lenzs law declares that the induced current produced in a circuit always flows in such a direction that it opposes the change or
q state faradays laws of electromagnetic induction first lawat any time the amount of magnetic flux linked with a closed circuit changes an emf is
q what is electromagnetic induction the phenomenon of producing an induced emf because of the changes in the magnetic flux associated with a closed
q define magnetic fluxmagnetic flux phi the magnetic flux phi correlated with a surface held in a magnetic field b is defined as the number of
the magnetic induction at a point 15 cm from a long straight wire carrying a current is 4 x 10 -6 t compute the currentj - 12 b muoi2pia i 2pia x
q explain about end rulewhen glanced from one end if the current through the solenoid is along clockwise direction the nearer end corresponds to
q define amperes circuital law the line integral rarr rarr for a closed curve is equivalent to muo timesthe net current iob dl by the area
q compute the resistance of the filament of a 100w 220 v electric bulbs power p v2r resistance r v2p 220 x 220 100 484
define magnetic moment of a current loop the magnetic moment of a current loop is described as the product of the current and the loop area its
q define current sensitivity of a galvanometer the current sensitivity of a galvanometer is described as the deflection produced when unit current
q give any two differences among peltier effect and joules law of heating joules law of heatingpeltier effecttakes place all through the
q in a galvanometer increasing the current sensitivity does not necessarily increase voltage sensitivity explainan interesting point to note is that
q how can we increase the current sensitivity of a galvanometer the current sensitivity of a galvanometer is able to be increased byi rising the
q define ampere in terms of force ampere is defined as that steady current which when flowing through two parallel infinitely long straight
q state flemings left hand rule flemings left hand rule the forefinger the middle finger as well as the thumb of the left hand are stretched in
in order to determine performance of program normal form of analysis of program is to just calculate total amount of cpu time needed to execute
after the parallel algorithm has been written as well as executed performance of both algorithms is one of other main concerns in order to examine
q define tangent law a magnetic needle suspended at a point wherever there are two crossed fields at right angles to each other will come to rest in
q how is a galvanometer converted into a an ammeter and b a voltmetera galvanometer is transformed into an ammeter by connecting a low resistance in