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a standard d cell flashlight battery is connected to a load of 3 omega after 6 hr of intermittent use the load voltage
referring to fig 125d a microf capacitor is charged to 12 v and then connected across a resistor of 100 omegaa
a 1 mh inductor and a 1 komega resistor are connected to a 12 v battery for a long time the circuit is similar to that
an electric heater contains 40 litres of water initially at a mean temperature of 15 degc 25 kw h is supplied to the
question 1 - three balanced loads are connected to three phase supply via a feeder line zf 0021 j 012 0 omega the
an initially uncharged 2 microf capacitor is connected in series with a 10 komega resistor and a 12 v batterya find the
three capacitors are connected in series across a 100 v battery if the capacitances are 1microf 01 microf and 001
a motor gives an output power of 20 kw and operates with an efficiency of 80 per cent if the constant input voltage to
a current source of 4 cos cot is connected across a 10 omega resistor and 20 mh inductor in series find the phasor
question 1for the circuits shown below determine v3 and i3 question 2determine the power dissipated in r1 r2 and r3 in
three capacitors have capacitances of 2 4 and 8 muf respectively find the total capacitance when they are connecteda in
when a potential difference of 10 v is applied to a coil of copper wire of mean temperature 20 degc a current of 10 a
questiona 230 v lamp is rated to pass a current of 026 a calculate its power output if a second similar lamp is
questionfigure shows a network with two sources of emfcalculate the voltage v1 and the emf
similar to impedance resistance and reactance which are measured in ohms s2 admittance conductance and susceptance are
a series resonant circuit is used to tune in stations in the am broadcast band if a station broadcasting on 870 khz is
question 1determine v1 i1 v2 i2 for circuits shown belowshow your workquestion 2for the circuits in problem 1 find the
to eliminate an interfering frequency of 52 mhz design a series resonant circuit to be inserted as a shunt you have
in the fm radio band which spans the frequencies from 88 mhz to 108 mhz stations must be separated by 020 mhz to avoid
parallel resonant circuits are used to select frequencies because the voltage and impedance peak at resonance calculate
it is desired to run the motor in the previous problem with a power factor of unity to achieve this a capacitor c is
a motor is connected to a 120 v rms 60 hz line the motor is rated at 2 kva and operates with a power factor of 08a find
the ratio of resistances of a 100 w 220 v lamp to that of a 100 w 110 v lamp will be at their respective voltages
calculate the forward bias needed at room temperature on a germanium pnjunction to give a current of 10 ma use a
provide support for the following circuits activitynbspsecond activityintroduction to kirchhoffs voltage law kirchhoffs