how to solve the question
For unlimited access to Homework Help, a Homework+ subscription is required.
Solve and Find:a) The complex power absorbed in the voltage source.b) The real power absorbed in the capacitor.c) The reactive power absorbed in the resistor in series with the -j800 capacitor.
Kindly solve the below questions:
1. Assume the AC frequency is 50 Hz. Convert these phasors to signals (remember that phasor magnitudes are RMS values of the signals)
(a) V = 115∠90V
(b) I = 10 + 10j A
2. Convert these signals to phasors (remember to us RMS values for the phasor magnitude)
3. Suppose the voltage across a load is v(t) and the current drawn is i(t) where
v(t) = 230cos (314t + 20) V
(a) calculate the complex power, real power, reactive power and apparent power.
(b) calculate the power factor and indicate if it is leading or bagging
Question 5 (IEIIQ18)
A simple Zener shunt voltage regulator is to supply a 10 V to load of 100 mA, the input supply voltage varies between 15 V and 20 V.
5.1 Draw the circuit diagram.
5.2 Calculate the minimum power for the Zener that could be used safely in this circuit.
5.3 Using a Zener diode with a power rating of twice this minimum value.
5.4 Calculate the range of series resistance that may safely be used in this circuit and suggested a suitable standard resistance value.
Question 6 (IEIIQ19)
A voltage regulator is required to provide a regulated terminal voltage of 25 V at a maximum load of 150 mA. The input volage varies between 50 V and 75 V dc.
6.1 Calculate the minimum power for the Zener that could be used safely in this circuit.
6.2 If a 30 W rated Zener is used, calculate the range of possible series resistance, RS. values and suggest a suitable standard E12 resistor value.