11.15 In the circuit of Fig. 11.46, find the value of Z, that will absorb the maximum power and the value of the maximum power. ΤΩ -j1Ω www 2V₂ ZL 120/0° V V.1
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- For the circuit of Fig.11.78 composed of standard values: A. Determine the time constant. B. Write the mathematical expression for the current It after the switch is closed C. Repeat part (b) for VL and VR D. Determine il and VL at one three- and five-time constants. E. Sketch the waveforms of iL,VL and VR.For the circuit in fig .11.82 A. Write the mathematical expressions for the current IL and the voltage Vl following the closing of the switch. B. Sketch the waveform of iL and VL for the entire period from initial value to steady-state level.For the circuit shown, determine the Thevenin equivalent voltage seen from the terminals marked A) and B). 22/30° A O 793.222 - 40.56° V O295.62112.87° V 294.88422.89° V j10 52 499.929.77° V · 1252 :-j34 2 -Oh
- O d. 1.02% Clear my choice The product of the r.m.s. voltage V and the r.m.s. current I is termed the reactive power Q Select one: O True O False An 8 kVA motor operates at a 0.75 power factor, the real power is then:AC eircuit. V 34V. Power supply 50 hz, max : Pogition 1; current and voltage Position 2: not in phase, current the values of Resistor, Inductor Switch are in phase, may current 340MA maxz 170MA. Find and single capacitor. 13The reactance of the Impedance Z=100 261 ° is: 100 Ohms 48.48 Ohms 87.46 Ohms 1.64 Ohms
- Activity 1: You are testing an electrical device which can be modelled by the figure shown below: 18 -j12 j6 8 -j10 i1 E1 12 13 E2 13 The above electric circuit can be characterized by the following equations: 1811 + j6(I1 – 2) + 4(I1 – I2) = 1020° -j121, + 8(12 – I3) + 20290° + 4(12 – 1) + j6(I2 – 1) = 0 -j1013 + 1313 – 20290° + 8(I3 - 12) = 0 1. Rearrange the above three equations. 2. Write the set of equations in matrix form (A.x = b) 3. Find the determinant of the resulted matrix (A).Impedance of AC circuit and Admittance of AC circuitSHOW THE CIRCUIT USING ANY SOFTWARE OR YOU CAN DRAW IT MANUAALYY thNAKSS11:35 a docs.google.com 4 نقاط * . .Francis turbine is alan .2 Friction turbine Reaction turbine Friction and Impulse turbine both. Impulse turbine The moderator helps in in a .1 4 نقاط * nuclear reactor reducing the speed of the neutrons All of the above absorbing the neutrons stopping the chain reaction reducing the temperature 4 نقاط Reaction turbines are employed for .7 Low heads Medium heads None of these Both of these
- If there is reactive power associated with a circuit element we can say a) That said element is purely resistive. b) That said element has a unitary power factor c) That said element has associated electric or magnetic fields d) None of the above11. a capacitor, resistor of 10 ohms, and an inductor of 70 mH are in series with an ac source marked 120 V, 70 Hz. if it is found that the voltage is in phase with the current, then find out the impedance of the circuit a. 900 ohms b. 100 ohms c. 10 ohms d. 5 ohmsPlease answer a, b, c, d in Q3. Thanks! Q1. An electro-magnet draws 3 kW of active power and 3 kvar of reactive power. Q2. A capacitor drawing 4 kvar is placed in parallel with the electro-magnet of Q1. Q3. If the capacitor of Q2 is replaced with one drawing 8 kvar, calculate: A. The new value of apparent power B. The new reactive power C. The new active power D. The new power factor