# Current Source and Figure Essay

2859 Words Aug 31st, 2013 12 Pages
Conventions for Describing Networks

2-1. For the controlled (monitored) source shown in the figure, prepare a plot similar to that given in Fig. 2-8(b).

v2

v1 = Vb (Vb

v1 = Va (Va

i2 Fig. 2-8 (b)
Solution:
Open your book & see the figure (P/46)
It is voltage controlled current source.

i2

+Ve axis

v2 -Ve axis gv1

i2

gv1 +

v2 current source

-

2-2. Repeat Prob. 2-1 for the controlled source given in the accompanying figure.
Solution:
Open your book & see the figure (P/46)
It is current controlled voltage source.

v2 ri1

i2

2-3. The network of the accompanying figure is
For each of the two systems, determine the equivalent inductance of the system at terminals 1-1’ by combining inductances.
Solution:
Open your book & see the figure (P/47)
Let a battery be connected across it to cause a current i to flow. This is the case of additive flux. M

L1 L2

V i (a)

V = self induced e.m.f. (1) + self induced e.m.f. (2) + mutually induced e.m.f. (1) + mutually induced e.m.f. (2)
V = L1di/dt + L2di/dt + M di/dt + M di/dt
Let Leq be the equivalent inductance then V = Leq di/dt
Leq di/dt = (L1 + L2 + M + M) di/dt
( Leq = L1 + L2 + M + M

Leq = L1 + L2 + 2M

M

L1 L2

i

V

(b)

This is the case of subtractive flux.
( V = L1di/dt + L2di/dt - M di/dt - M di/dt
Let Leq be the equivalent inductance then V = Leq di/dt
Leq di/dt = (L1 + L2 - M - M) di/dt
( Leq = L1 + L2 - M - M

Leq = L1 + L2 - 2M

2-9. A transformer has 100 turns on the primary (terminals 1-1’) and 200 turns on the secondary (terminals 2-2’). A current in the primary causes a magnetic flux, which links all turns of both the primary and the secondary. The flux decreases according to the law ( = e-t Weber, when t ( 0. Find: (a) the flux linkages of the primary and secondary, (b) the voltage induced in the secondary.
Solution:
N1 = 100
N2 = 200
( = e-t (t ( 0)
Primary flux linkage (1 = N1( = 100 e-t
Secondary flux

## Related Documents

• ###### Essay Basic Theory Of Power Transfer Network

overloading to the remaining lines. So, to avoid over loading we can reduce output power of generating station by tripping the generators. 1.2 Terms related to uncompensated transmission line Current control Voltage control Voltage stability Damping oscillation Transient and dynamic stability Fault current limiting Active power control Reactive power control Voltage stability: For a stable voltage there must be equal voltage at all busses in power transmission line. Due to instability…

Words: 1664 - Pages: 7
• ###### Essay, Term Paper

kW at a lagging power factor of 0.8. Determine R and X. 3. Two loads connected in parallel are supplied from a single-phase 240-Vrms source. The two loads draw a total real power of 400 kW at a power factor of 0.8 lagging. One of the loads draws 120 kW at a power factor of 0.96 leading. Find the complex power of the other load. 4. The load shown in figure 1 consists of resistance R in parallel with a capacitor of reactance X. The load is fed from a single-phase supply through a line of impedance…

Words: 666 - Pages: 3
• ###### Essay Lab Report On The Circuit Lab

to perform various tasks for several circuits. First, I drew how I would build the provided circuit on a breadboard (Figure II, p.3). Then, I built and measured the values of resistance, current, and voltage using a multimeter. I also found the nominal values by using Kirchhoff’s voltage/current laws and Ohm’s Law. My data for the nominal and measured values of resistance, current, and voltage are shown in Tables 1-5 (pages 5-6). From that data, I calculated the KVL and power conservation sums shown…

Words: 1403 - Pages: 6
• ###### Foreign Banks and Globalization Essay

sophistication leads the high productivity in production of produce and service”. This high business sophistication is embodied in Brazilian banking system as well. For example, just in 2011, around 180 banks and their 16,800 branches had primary sources and involved in short-term credit (Ernst& Young 2011). As a leading corporation in Australian financial service, ANZ would not be satisfied with its existing market. In last thirty year, ANZ already created its markets in Asian successfully. Nowadays…

Words: 1398 - Pages: 6

covered from available funds the new investment. On the other hand, Madison platform has initial investment of 8.5 million for that project, company will have to look for sources of funds to cover differences of 3 million. Furthermore, the calculation of IRR is 31% and 36% full details in table 1. which is high compared with figures of Madison platform which is having 28% and 25% as explained in table 2. According to results of calculations best project to invest in is Madison super, there are many…

Words: 1730 - Pages: 7
• ###### The Effects Of Renewable Energy On The Environment And Rise Of Global Warming

Warming. So various approaches are being made to meet the world 's increasing demand of energy.in the recent years, there has been great development in the field of power generation from the alternative sources of energy. Renewable energy projects are becoming more popular. There are many renewable sources available for generating energy for-instance: Solar Energy, Wind Energy, Hydro Power, Marine/Ocean Energy, Geothermal Energy, Nuclear Energy, Bio-Fuel, and Tidal Power. But power generation using solar…

Words: 1962 - Pages: 8
• ###### The Effects Of Renewable Energy On The World 's Increasing Demand Of Energy

Warming. So various approaches are being made to meet the world 's increasing demand of energy.in the recent years, there has been great development in the field of power generation from the alternative sources of energy. Renewable energy projects are becoming more popular. There are many renewable sources available for generating energy for-instance: Solar Energy, Wind Energy, Hydro Power, Marine/Ocean Energy, Geothermal Energy, Nuclear Energy, Bio-Fuel, and Tidal Power. But power generation using solar…

Words: 2141 - Pages: 9
• ###### Facebook Financial Performance Report Essay example

Assets | | | | | | | | | Current assets: | | | | | | | | | Cash and cash equivalents | | \$ | 2,098 | | | \$ | 1,512 | | Marketable securities | | | 8,090 | | | | 2,396 | | Accounts receivable, net of allowances for doubtful accounts of \$17 as of June 30, 2012 and December 31, 2011 | | | 578 | | | | 547 | | Income tax refundable | | | 567 | | | | 0 | | Prepaid expenses and other current assets | | | 634 | | |…

Words: 1319 - Pages: 6
• ###### Essay Circuits Lab Report #1

verify the Ohm's Law, Kirchhoff's Voltage and Current Laws. As well as the introduction to the voltage division. The Ohm's Law states that the current through a conductor between two points is directly proportional to the potential difference across the two points (V = IR). The Kirchhoff's Voltage Law states that the directed sum of the electrical voltage around any closed network is zero. The Kirchhoff's Current Law states that the algebraic sum of currents in a network of conductors meeting at a point…

Words: 760 - Pages: 4
• ###### Wind Power Essay

The Power of Wind Wind energy is a free and limitless power source. No matter where you go, there will always be wind. In the past, wind was captured and controlled through the use of sails for the powering of ships. Now that larger amounts of energy have been found, through the burning of fossil fuels, the art of sailing has faded to a recreational sport. Wind has also been used in the past to power mills, which have been used to pump water and grind grains. Though now these techniques of harnessing…

Words: 828 - Pages: 4