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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
in a microprocessor system a single-byte number is located at 0060 and also a single-byte number is available at the
a three-phase induction motor is wound for four poles and is supplied from a 50 hz system calculatea the synchronous
a three-phase 600 mva generator has a rated terminal voltage of 22 kv line the stator winding is star-connected and has
a star-connected load consists of three identical coils each of inductance 1592 mh and resistance 50 w if the supply
a coil of 300 turns wound on a core of non-magnetic material has an inductance of 10 mh calculatea the flux produced by
the voltage across a resistor is measured by a voltmeter which gives an indication of 755 v when operating on a scale
the current in a circuit is measured as 235 mua and the accuracy of measurement is plusmn05 per cent the current passes
the pd across and the current in a circuit are represented by 100 j200 v and 10 j5 a respectively calculate the