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(ELEC102)test2_pastf.pdf
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Text Box: (a) Draw V1 and I1 in a phasor diagram. (b) Use superposition to find the phasor V3. (25)


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Text Box: Reactive power Q of the 1kW electric heater is 750VAR(L) . (a) Find the power factor PF of the heater. (b) If loa






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Text Box: Load C has 12kW and 5kVAR(L) . (a) Find the apparent power S of load C. Find also IC in Arms.(b) If load D is co






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Text Box: (a) Find the equation relating Vo, VS1, VS2, RS1, RS2, and R2. Assume the op amp is ideal. (9)

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Text Box: (b) Draw the circuit model for a resistance (I to V) amplifier.What is the ideal value of the input resistance of

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