QI Q2 Q3: Write true or false: 1. The power factor can be define as the ratio _[Tue power » apparent power 2. The superposition principle applies to power calculation. 3. The impedance of inductor...

QI Q2 Q3: Write true or false: 1. The power factor can be define as the ratio _[Tue power » apparent power 2. The superposition principle applies to power calculation. 3. The impedance of inductor increases with increasing frequency. 4. The Norton'sresistance is exactly equal to the Thevenin resistance . 5. the average value for half cycle equale zero. 6. Power is the time rate of expending or absorbine ~ergy. Fillin the blanks: 1. The rms value of sinusoidal waveform (voltage of CUFFENt) i§iamsmmremmmmmmees e | 2. The instrument for measuring average POWET i§: =w--smssmeemmmmeamoamemaaans | 3. The imaginary part of impedance is called:----— 4. The Py, for pure inductive load AC Cirouit is: --mm-mmsmemsemmemmememene . 5. The frequency response of pure capacitance load AC circuit is derived from this relation :--—---—--. - 6. The sum of the currents entering a node is —--=w=-mx-- —- to the sum of the currents leaving the node. choose the correct answer: 1.The current through a branch in a linear network is 2Awhen e inpu source vouage is 10 V. If the voltage is reduced to 1V and the polarity is reversed, the current through the branch is: (a)-2A (b)-02A (©)02A (d2A (€)20 A 2.1f vl =30 coswt and v2 = 20 sin{er + 50°),which of these statements are true? (a) v1 leads 12 (b) v2leads v1 (c) v2 lags vl (d) vl lags v2 3. . The Norton current at terminals a and b of the circuit in Figure shown is: (a) 10A (b)25A (©2A (oA 5Q oV 00 4. Aseries RC circuit has Vg = 12V, V¢ = 5V and The magnitude of the supply voltage is: @7V (b)7V (© 13V D17V 5. A series RLC circuit has R = 30Q , XC =902, and XL = 50Q . The impedance of the circuit is: (2)30+/140 (b)30+/40 (c)30-j40 (d)-30-740 (e)-30+ 40


Extracted text: Q1: Write true or false: true power 1. The power factor can be define as the ratio apparent power 2. The superposition principle applies to power calculation. 3. The impedance of inductor increases with increasing frequency. 4. The Norton'sresistance is exactly equal to the Thevenin resistance. 5. the average value for half cycle equale zero. 6. Power is the time rate of expending or absorbins mergy. Q2: Fill in the blanks: 1. The rms value of sinusoidal waveform (voltage or current) is:- 2. The instrument for measuring average power is: 3. The imaginary part of impedance is called:--- 4. The Pay for pure inductive load AC circuit is:- 5. The frequency response of pure capacitance load AC circuit is derived from this relation :-- 6. The sum of the currents entering a node is to the sum of the currents leaving the node. Q3: choose the correct answer: 1.The current through a branch in a linear network is 2Awhen the input source voitage is 10 V. If the voltage is reduced to 1V and the polarity is reversed, the current through the branch is: (a) - 2 A (b) - 0.2 A (c) 0.2 A (d) 2 A (e) 20 A 2. If vl = 30 cosot and v2 20 sin(ot + 50°),which of these statements are true? (b) v2 leads v 1 (a) vl leads v2 (c) v2 lags vl (d) v1 lags v2 3..The Norton current at teminals a and b of the circuit in Figure shown is: (c) 2 A (a) 10 A (b) 2.5 А (d) 0 A 50 a 50 V 20 2 4. A series RC eircuit has VR 12V, Vc 5V and The magnitude of the supply voltage is: (а)-7 V (b) 7 V (c) 13 V (d) 17 V 5. A series RLC circuit has R= 30n, XC=900, and XL = 502. The impedance of the circuit is: (a) 30 +j140 (b) 30 + j40 (c) 30 - j40 (d) -30 - j40 (e) -30 + j40