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engineering
electrical engineering
Questions and Answers of
Electrical Engineering
The current in a 25-mH inductor is given by the expressionsM i(t)=0 t0 Find (a) the voltage across the inductor, (b) the expression for the energy stored in it.
Given the data in the previous problem, find the voltage across the inductor and the energy stored in it after 1 s.
The current in a 50-mH inductor is given by the expressions i(t)=0 t0 Find (a) the voltage across the inductor, (b) the time at which the current is a maximum, and (c) the time at which the
The current i (t) = 0 t0 Flows through a 150-mH inductor. Find both the voltage across the inductor and the energy stored in it after 5 seconds.
The current in a 10-mH inductor is shown in Figure P5.28. Find the voltage across the inductor.
The current in a 50-mH inductor is given in Figure P5.29. Sketch the inductor voltage.
The current in a 16-mH inductor is given by the waveform in Figure P5.30. Find the waveform of the voltage across the inductor.
Draw the waveform for the voltage across a 10-mH inductor when the inductor current is given by the waveform shown in Figure P5.31
The voltage across a 10-mH inductor is shown in Figure P5.32. Determine the waveform for the inductor current
The waveform for the voltage across a 20-mH inductor is shown in Figure P5.33. Compute the waveform for the inductor current.
The voltage across a 2-H inductor is given by the waveform shown in Figure P5.34. Find the waveform for the current in the inductor.
Find the possible capacitance range of the following capacitors. a) 0.068 F with a tolerance of 10% b) 120pF with a tolerance of 20% c) 39F with a tolerance of 20%
The capacitor in Figure P5.36a is 51 nF with a tolerance of 10%. Given the voltage waveform in Figure P5.36b graph the current i(t) for the minimum and maximum capacitor values.
Find the possible inductance range of the following inductors a) 10 mH with a tolerance of 10% b) 2.0 nH with a tolerance of 5% c) 68 H with a tolerance of 10%
The inductor in Figure P5.38a is 330µH with a tolerance of 5%. Given the current waveform in Figure P5.38b, graph the voltage v(t) for the minimum and maximum inductor values.
The inductor in Figure P5.39a is 4.7 µH with a tolerance of 20%. Given the current waveform in Figure P5.39b, graph the voltage v(t) for the minimum and maximum inductor values.
What values of capacitance can be obtained by interconnecting a 4-µF capacitor, a 6-µF capacitor, and a 12-µF capacitor?
Given a 1, 3, and 4-µF capacitor, can they be interconnected to obtain an equivalent 2-µF capacitor?
Given four 2-µF capacitors, find the maximum value and minimum value that can be obtained by interconnecting the capacitors in series/parallel combinations.
The two capacitors in Figure P5.42 were charged and then connected as shown. Determine the equivalent capacitance, the initial voltage at the terminals, and the total energy stored in the network.
Two capacitors are connected in series as shown in Figure P5.44. Find Vo
Three capacitors are connected as shown in Figure P5.45. Find V1 and V2.
Select the value of C to produce the desired total capacitance of CT=2µF in the circuit in Figure P5.46
Select the value of C to produce the desired total capacitance of CT=1µF in the circuit in Figure P5.47.
Find the equivalent capacitance at terminals A-B in Figure P5.48
Determine the total capacitance of the network in Figure P5.49
Find Ct in the network in Figure P5.50 if (a) the switch is open and (b) the switch is closed.
Find the total capacitance CT of the network in Figure P5.51.
Compute the equivalent capacitance of the network in Figure P5.52 if all the capacitors are 5µF.
If all the capacitors in Figure P5.53 are 6 µF, find Ceq
Given the capacitors in Figure 5.54 are C1=2.0uF with a tolerance of 2% and C2=2.0uF with a tolerance of 20%, find a) the nominal value of CEQ b) the minimum and maximum possible values of
Given the capacitors in Figure 5.55 are C1=0.1µF with a tolerance of 2% and C2=0.33µF with a tolerance of 20% and 1 µF with a tolerance of 10% . Find the following.a) the nominal
Select the value of L that produces a total inductance of Lt = 10mH in the circuit in Figure P5.56
Find the value of L in the network in Figure P5.57 so that the total inductance Lt will be 2 mH.
Find the value of L in the network in Figure 5.58 so that the value of Lt will be 2 mH.
Determine the inductance at terminals A-B in the network in Figure P5.59.
Compute the equivalent inductance of the network in Figure P5.60 if all inductors are 5 mH
Determine the inductance at terminals A-B in the network in Figure P5.61
Find the total inductance at the terminals of the network in Figure P5.62
Given the network shown in Figure P5.63 find (a) the equivalent inductance at terminals A-B with terminals C-D short circuited. And (b) the equivalent inductance at terminals C-D with terminals A-B
For the network in Figure P5.64 choose C such thatVo = - 10 { v,dt
For the network in Figure P5.65, vs(t)=120cos377t V. Find Vo(t)
For the network in Figure P5.66, vs(t)=115sin377t V. Find vo(t)
Given three capacitors with values 2µF, 4µF and 6µF, can the capacitors be interconnected so that the combination is an equivalent 3µF?
The current pulse shown in Figure 5PFE-2 is applied to a 1µF capacitor. Determine the charge on the capacitor and the energy stored.
In the network shown in Figure 5PFE-3, determine the energy stored in the unknown capacitor Cx
Use the differential equation approach to find Vc (t) for t>0in the circuit in Fir. P6.1
Use the differential equation approach to find i(t) for t > 0 in the network in Fig P6.2 as shown.
Use the differential equation approach to find VC(t) for t>0 in the circuit in Fig. P6.3
Use the differential equation approach to find i0(t) for t>0 in the network in Fig P6.4
In the network in Fig P6.5, find i0(t) for t>0 using the differential equation approach.
In the circuit in Fig P6.6, find i0 (t) for t>0 using the differential equation approach.
Use the differential equation approach to find V0(T) for t>0 in the circuit in Fig P6 and plot the response including the time interval just prior to switch action.
Use the differential equation approach to find i(t) for t > 0 in the circuit in Fig. P8 and plot the response including the time interval just prior to opening the switch.
Use the differential equation approach to find vc(t) for t > 0 in the circuit in Fig P6.9 and plot the response including the time interval just prior to opening the switch.
Use the differential equation approach to find i(t) for t>0 in the circuit in Fig. P6.4 and plot the response including the time interval just prior to switch movement.
Use the differential equation approach to find VC(t) for t >0 in the circuit in Fig. P6.12 and plot the response including the time interval just prior to closing the switch.
Use the differential equation approach to find Vc(t) for t >0 in the circuit in Fig. P.13 and plot the response including the time interval just prior to opening the switch.
Use the differential equation approach to find i0(t) for t > 0 in the circuit in Fig. P6.14 and plot the response including the time interval just prior to closing the switch.
Use the differential equation approach to find i(t) for t > 0 in the circuit in Fig. P.16 and plot the response including the time interval just prior to switch movement.
Use the differential equation approach to find V0(t) for t > 0 in the circuit in Fig. P.16 and plot the response including the time interval just prior to switch action.
Use the differential equation approach to find V0(t) for t > 0 in the circuit in Fig. P.17 and plot the response including the time interval just prior to closing the switch.
Use the differential equation approach to find V0(t) for t > 0 in the circuit in Fig. P6.18 and plot the response including the time interval just prior to opening the switch.
Use the differential equation approach to find V0(t) for t > 0 in the circuit in Fig. P.19 and plot the response including the time interval just prior to opening the switch.
Use the differential equation approach to find i0(t) for t > 0 in the circuit in Fig. P.20 and plot the response including the time interval just prior to opening the switch.
Use the differential equation approach to find i0(t) for t > 0 in the circuit in Fig. P.21 and plot the response including the time interval just prior opening the switch.
Use the differential equation approach to find i0(t) for t > 0 in the circuit in Fig. P.22 and plot the response including the time interval just prior to opening the switch.
Use the differential equation approach to find i0(t) for t > 0 in the circuit in Fig. P.23 and plot the response including the time interval just prior to opening the switch.
Use the differential equation approach to find V0(t) for t > 0 in the circuit in Fig. P.24 and plot the response including the time interval just prior to opening the switch.
Find VC(t) for t > 0 in the network in Fig. 6.25 using the step-by-step method.
Use the step-by-step method to find i0(t) for t > 0 in the circuit in Fig. P.26.
Find i0(t) for t > 0 in the network in Fig. P6.27 using the step-by-step method.
Use the step-by-step method to find io(t) for t > 0 in the circuit in Fig. P6.28.
Use the step-by-step technique to find i0(t) for t > 0 in the network in Fig. P6.29.
Use the step-by-step method to find V0 (t) for t > 0 in the network in Fig. P6.30.
Use the step-by-step method to find i0(t) for t > 0 in the circuit in Fig. P6.31.
Find V0(t) for t > 0 in the network in Fig. P6.32 using the step-by-step technique.
Find i0(t) for t > 0 in the network in Fig. P6.33 using the step-by-step method.
Find V0(t) for t > 0 in the network in Fig. P6.34 using the step-by-step method.
Use the step-by-step technique to find V0(t) for t > 0 in the network in Fig. P.35.
Use the step-by-step technique to find i0(t) for t > 0 in the networking in Fig. P6.36.
Find i0(t) for t > 0 in the networking in Fig P6.37 using the step-by-step method.
Use the step-by-step technique to find i0(t) for t > 0 in the network in Fig. P6.38.
Find i0(t) for t > 0 in the network in Fig. P6.40 using the step-by-step method
Find V0(t) for t > 0 in the network in Fig. P6.41 using the step-by-step method.
Find V0(t) for t > 0 in the network in Fig. P6.42 using the step-by-step method.
Find i0(t) for t > 0 in the circuit in Fig. P6.43 using the step-by-step method.
Find V0(t) for t > 0 in the network in Fig. P6.44 using the step-by-step method.
Use the step-by-step method to find i0(t) for t > 0 in the network in Fig. P6. 45.
Find V0(t) for t > 0 in the circuit in Fig. P6.46 using the step-by-step method.
Use the step-by-step technique to find V0(t) for t > 0 in the circuit in Fig. P6.47.
Find V0(t) for t > 0 in the circuit in Fig. P6.48 using the step-by-step method.
Use the step-by-step method to find V0 (t) for t > 0 in the network in Fig. P6.49.
Find V0(t) for t > 0 in the network in Fig. P6.50 using the step-by-step method.
Use the step-by-step method to find i0(t) for t > 0 in the network in Fig. P6.51
Use the step-by-step method to find i0(t) for t > 0 in the network in Fig. P6.52
Find i0(t) for t > 0 in the circuit in Fig. P6.53 using the step-by-step method.
Find i0(t) for t > 0 in the circuit in Fig. P6.54 using the step-by-step technique.
The differential equation that describes the current i0 (t) in a network is
The terminal current in a network is described by the equation
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