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stored energy in a magnetic device the core shown in figure 980 is made of two pieces two gaps exist between the two
application forces on magnetic poles of a gap in figure 984 calculate the force that exists between the two faces of
suppose the rails in figure 105a have a resistance romegam each the bar is perfectly conducting calculate the current
a small coil has a self-inductance of 10 muh a sinusoidal current of amplitude 01 a and frequency 1 khz passes through
any generator requires a given magnetic field to produce an emf one way of obtaining the required magnetic field is a
a small portable generator can be started by pulling on a cord to start the engine and supplies ac current directly to
application motional emf as a motion detector mechanism suppose you want to know if a train is moving on a rail but it
induced emf in a rotating bar two conducting hoops each of radius r1 are connected at one point by a straight conductor
emf in a generator a piece of wire is bent and rotated in a uniform magnetic field b as shown in figure 1043 the
emf in rotating bar a conducting bar of length i is pivoted at one end and rotates at an angular velocity omega in a
homopolar generator a spoked conducting wheel rotates in an ac magnetic field as shown in figure 1044 the frequency of
application homopolar generator a disk of radius 100 mm rotates in a uniform sinusoidal magnetic field at 6000 rpm as
application the mhd generator a small magneto hydrodynamic mho generator is proposed as part of the exhaust system of a
current transformer with air core calculate the induced voltage in an air-filled uniformly wound toroidal coil of n
torque in acyclic motor a disk of radius 100 mm is placed in a uniform dc magnetic flux density of 02 t a wire is
ideal transformer an ideal transformer has a primary to secondary turn ratio of 10 if the transformers primary coil is
a firm has a cost functionlet p be the price of output and let the factor prices be fixed if p 2 how much will the
a typical silicon valley firm produces output of chips y using a cost function cy which exhibits increasing marginal
a factor of production i is called znferior if the conditional demand for that factor decreases as output increases
suppose that a firm behaves competitively in its output market and its factor market suppose the price of each input
consider the indirect utility function given bya what are the demand functionsb what is the expenditure functionc what
calculate the substitution matrix for the cobb-douglas demand system with two goods verify that the diagonal terms are
suppose that a consumer has a linear demand function x apbmc write down the differential equation you would need to
assignmentintroductionthe chosen switch to be used in an inverter is an igbt insulated gate bipolar junction transistor
suppose that a consumer has a semi-log demand function write down the differential equation you would need to solve to