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a capacitor c is connected in parallel with a resistor r across a 120 v 200 hz supply the supply current is 2 a at a
a single phase full-wave half-controlled bridge converter feeds an inductive load the two scrs in the converter are
a ceramic capacitor is to be constructed to have a capacitance of 001 muf and to have a steady working potential of 25
two parallel wires each of diameter 5 mm are uniformly spaced in air at a distance of 50 mm between centres determine
the core of a transformer operating at 50 hz has an eddy current loss of 100 wm3 and the core laminations have a
the eddy current loss in a particular magnetic circuit is 10 wm3 if the frequency of operation is reduced from 50 hz to
a balanced three-wire star-connected 3-phase load has a phase voltage of 240 v a line current of 5 a and a lagging
a steady voltage of 075v is applied to an op amp integrator having component values of r 200 k and c 25 muf assuming
a differential amplifier has an open-loop voltage gain of 120 and a common input signal of 30 v to both terminals an
an inductor has a negligible resistance and an inductance of 200 mh and is connected in series with a 1 k resistor to a
an amplifier has an open-circuit voltage gain of 70 db and an output resistance of 15 komega determine the minimum
the voltage gain of an amplifier when it feeds a resistive load of 10 komega is 40 db determine the magnitude of the
an integrated-circuit amplifier has an open-circuit voltage gain of 5000 an input resistance of 15 komega and an output
determine the strength of a uniform electric field if it is to have the same energy as that established by a magnetic
the airgap of a moving coil instrument is 20 mm long and has a cross-sectional area of 500 mm2 if the flux density is
calculate the value of the energy stored when a current of 50 ma is flowing in a coil of inductance 200 mh what value
determine a the loop inductance and b the capacitance of a 1 km length of single-phase twin line having conductors of
a coaxial cable has an inner core of radius 10 mm and an outer sheath of internal radius 40 mm determine the inductance
a 400 pf capacitor is charged to a pd of 100 v the dielectric has a cross-sectional area of 200 cm2 and a relative
a stabilization circuit has a stability factor of 004 and an internal resistance of 5 omega the unstabilized voltage
a transistor amplifier stage comprises a transistor of parameters hie 800 omega hfe 50 and hoe 20 mus and bias
an amplifier with an open-circuit voltage gain of -1000 and an output resistance of 100 omega feeds a resistive load of
an 11 kv three-phase 50 hz line of resistance 3 omegaph and reactance j7 omegaph supplies an 11 kv400 v transformer
domestic waste releases 9 gjtonne when burned in electricity from waste plant having a conversion efficiency of 25 per
a hoist is fitted with a protective device which operates at a height of 20 m above 20 m the protective device inputs