Problem 2.1MCQ: The rms value of v(t)=Vmaxcos(t+) is given by a. Vmax b. Vmax/2 c. 2Vmax d. 2Vmax Problem 2.2MCQ: If the rms phasor of a voltage is given by V=12060 volts, then the corresponding v(t) is given by... Problem 2.3MCQ: If a phasor representation of a current is given by I=70.745A, it is equivalent to a. 100e/45 b.... Problem 2.4MCQ Problem 2.5MCQ Problem 2.6MCQ Problem 2.7MCQ Problem 2.8MCQ Problem 2.9MCQ Problem 2.10MCQ: The average value of a double-frequency sinusoid, sin2(t+), is given by (a) 1 (b) (c) Zero Problem 2.11MCQ: The power factor for an inductive circuit (R-L load), in which the current lags the voltage, is said... Problem 2.12MCQ: The power factor for a capacitive circuit (R-C load), in which the current leads the voltage, is... Problem 2.13MCQ Problem 2.14MCQ: The instantaneous power absorbed by the load in a single-phase ac circuit, for a general R LC load... Problem 2.15MCQ Problem 2.16MCQ: With generator conyention, where the current leaves the positive terminal of the circuit element, if... Problem 2.17MCQ: Consider the load convention that is used for the RLC elements shown in Figure 2.2 of the text. A.... Problem 2.18MCQ Problem 2.19MCQ: The admittance of the impedance j12 is given by (a) j2S (b) j2S2 (c) j4S Problem 2.20MCQ: Consider Figure 2.9 of the text, Let the nodal equations in matrix form be given by Eq. (2.4. 1) of... Problem 2.21MCQ: The three-phase source line-to-neutral voltages are given by Ean=100,Ebh=10+240, and Ecn=10240volts.... Problem 2.22MCQ: In a balanced three-phase Y-connected system with a positive-sequence source, the line-to-line... Problem 2.23MCQ: In a balanced system, the phasor sum of the line-to-line voltages and the phasor sum of the... Problem 2.24MCQ: Consider a three-phase Y-connected source feeding a balanced- load. The phasor sum of the line... Problem 2.25MCQ: For a balanced- load supplied by a balanced positive-sequence source. the line currents into the... Problem 2.26MCQ: A balanced -load can be converted to an equivalent balanced-Y load by dividing the -load impedance... Problem 2.27MCQ: When working with balanced three-phase circuits, per-phase analysis is commonly done after... Problem 2.28MCQ: The total instantaneous power delivered by a three-phase generator under balanced operating... Problem 2.29MCQ: The total instantaneous power absorbed by a three-phase motor (under balanced steady-state... Problem 2.30MCQ: Under balanced operating conditions, consider the three-phase complex power delivered by the... Problem 2.31MCQ: One advantage of balanced three-phase systems over separate singlephase systems is reduced capital... Problem 2.32MCQ: While the instantaneous electric power delivered by a single-phase generator under balanced... Problem 2.1P: Given the complex numbers A1=630 and A2=4+j5, (a) convert A1 to rectangular form: (b) convert A2 to... Problem 2.2P: Convert the following instantaneous currents to phasors, using cos(t) as the reference. Give your... Problem 2.3P: The instantaneous voltage across a circuit element is v(t)=400sin(t+30)volts, and the instantaneous... Problem 2.4P: For the single-phase circuit shown in Figure 122,I=100A. (a) Compute the phasors I1,I2, (b) Draw a... Problem 2.5P: A 60Hz, single-phase source with V=27730 volts is applied to a circuit element. (a) Determine the... Problem 2.6P: (a) Transform v(t)=75cos(377t15) to phasor form. Comment on whether =377 appears in your answer. (b)... Problem 2.7P: Let a 100V sinusoidal source be connected to a series combination of a 3 resistor, an 8 inductor,... Problem 2.8P: Consider the circuit shown in Figure 2.23 in time domain. Convert the entire circuit into phasor... Problem 2.9P: For the circuit shown in Figure 2.24, compute the voltage across the load terminals. Problem 2.10P: For the circuit element of Problem 2.3, calculate (a) the instantaneous power absorbed, (b) the real... Problem 2.11P Problem 2.12P: The voltage v(t)=359.3cos(t)volts is applied to a load consisting of a 10 resistor in parallel with... Problem 2.13P Problem 2.14P: A single-phase source is applied to a two-terminal, passive circuit with equivalent impedance... Problem 2.15P: Let a voltage source v(t)=4cos(t+60) be connected to an impedance Z=230. (a) Given the operating... Problem 2.16P: A single-phase, 120V(rms),60Hz source supplies power to a series R-L circuit consisting of R=10 and... Problem 2.17P: Consider a load impedance of Z=jwL connected to a voltage and V let the current drawn be I. (a)... Problem 2.18P: Let a series RLC network be connected to a source voltage V, drawing a current I. (a) In terms of... Problem 2.19P: Consider a single-phase load with an applied voltage v(t)=150cos(t+10)volts and load current... Problem 2.20P: A circuit consists of two impedances, Z1=2030 and Z2=2560, in parallel, supplied by a source voltage... Problem 2.21P: An industrial plant consisting primarily of induction motor loads absorbs 500 kW at 0.6 power factor... Problem 2.22P: The real power delivered by a source to two impedances, Z1=4+j5 and Z2=10 connected in parallel, is... Problem 2.23P: A single-phase source has a terminal voltage V=1200volts and a currentI=1530, which leaves the... Problem 2.24P: A source supplies power to the following three loads connected in parallel: (1) a lighting load... Problem 2.25P: Consider the series RLC circuit of Problem 2.7 and calculate the complex power absorbed by each of... Problem 2.26P: A small manufacturing plant is located 2 km down a transmission line, which has a series reactance... Problem 2.27P: An industrial load consisting of a bank of induction motors consumes 50 kW at a power factor of 0.8... Problem 2.28P: Three loads are connected in parallel across a single-phase source voltage of 240V(RMS). Load 1... Problem 2.29P Problem 2.30P: Figure 2.26 shows three loads connected in parallel across a 1000-V(RMS),60Hz single-phase source.... Problem 2.31P: Consider two interconnected voltage sources connected by a line of impedance Z=jX, as shown in... Problem 2.35P Problem 2.36P Problem 2.37P Problem 2.38P Problem 2.39P Problem 2.40P: A balanced three-phase 240-V source supplies a balanced three-phase Load. If the line current IA is... Problem 2.41P Problem 2.42P: A balanced -connected impedance load with (12+j9) per phase is supplied by a balanced three-phase... Problem 2.43P: A three-phase line, which has an impedance of (2+j4) per phase, feeds two balanced three-phase loads... Problem 2.44P: Two balanced three-phase loads that are connected in parallel are fed by a three-phase line having a... Problem 2.45P: Two balanced Y-connected loads, one drawing 10 kW at 0.8 power factor lagging and the other IS kW at... Problem 2.46P: Three identical impedances Z=3030 are connected in to a balanced three-phase 208-V source by three... Problem 2.47P: Two three-phase generators supply a three-phase load through separate three-phase lines. The load... Problem 2.48P Problem 2.49P: Figure 2.33 gives the general -Y transformation. (a) Show that the general transformation reduces... Problem 2.50P: Consider the balanced three-phase system shown in Figure 2.34. Deter mine v1(t) and i2(t). Assume... Problem 2.51P: A three-phase line with an impedance of (0.2+j1.0)/ phase feeds three balanced three-phase loads... Problem 2.52P: A balanced three-phase load is connected to a 4.16-kV, three-phase, fourwire, grounded-wye dedicated... Problem ACSQ: What is a microgrid? Problem BCSQ: What are the benefits of microgrids? Problem CCSQ Problem DCSQ format_list_bulleted
