Example :- FindI for the following cct. network :- 12.50 102 300 12 V 150 200

I just want a clarification how to measure the increase  figure 12.6a has 2.2 erlangs and 20 circuits  figure 12.6b has 8.8 erlangs and 13 cir

For the cct. Shown below calculate (for charging phase and discharging phase) (T) Write the equation of Vc Write the equation of ic Write the equation of VR For charging phase plot (on a graph paper) i. Vc ii. ic iii. VR iv. E 1 +27, 2 w RK

List 3 different concepts of Electricity(gravity) not hydro generation using weights design.  Each concept must have an introduction and design description.    Include a photo of each trenching machine design and modeling  concept.    For Example : Mass electricity generation

Q3) A single-phase bridge-type Cycloconverter has input voltage of 230V and 50Hz and load of R-1012. Output frequency is one-third of input frequency. For a firing angle delay of 30° Step up a) Draw the circuit and explain the operation of the Cycloconverter 4th b) Derive an expression for output voltage c) Calculate (1) RMS value of output voltage (2) RMS current of each converter (3) RMS current of each thyristor and (4) input power factor.

Consider a 40MVA, 132/11kV transformer with a reactance of 15% on its rating, shown in Figure Q2. It is equipped with an on-load tap-changer that is used to maintain constant voltage at the 11kV busbar by compensating for variations in the voltage of the 132kV network, and for the voltage drop across the transformer. The variation of the network voltage at 132kV transformer busbar for heavy loading conditions is shown in the table below. Active power losses in the transformer are ignored, and it is assumed that the value of the reactance of the transformer is not influenced by the change in the turn ratio. Calculate t, the tap ratio, and the actual voltage at bus 2 in this case. (Note: For instance, a nominal ratio of the transformer is 132/11, when tapped to give 144/11 ratio, therefore t is 144/132=1.09). Load Power factor Voltage at 132kV Desired voltage at busbar (Bus 1) 11KV busbar (Bus 2) 5MVA 0.9 185kV 11kV Bus 2 Bus 1 X=15% t:1 Figure Q2

For step a), use equations (2) to find the equation for the input impedance equations (2) are V1 = jwL1I1 + jwMI2 and V2 = jwMI1 + jwL2I2 equation for the input impedance: Z1 = V1/I1 = jwL1 + (wM)2/(jwL2 + ZL)

A SERIES CIRCUIT CONSISTING OF AN 80- OHM RESISTOR, A 0.30 HENRY INDUCTOR AND A 50-uf (MICROFARAD) CAPACITOR IS CONNECTED TO A 120-VOLT 60+ CYCLE SOURCE C ALCULATE THE FOLLOWINC : (A.) EQUIVALENT IMPEDANC E OF THE CKT, (B.) CURRENT (c.) VOLTAGE DROPACROSS THE SEVERAL UNITS (D.) POWER AND POWER FACTOR,

Question # 2 For the STC given I-V panel curve Rshunt is 415.405 Q, Rseries is 0.221 N). It is required to draw the panel equivalent circuit and to a) Find the load current and load resistance at Pmax. b)Calculate the series resistance consumed power at Pmax c) Deduce the loss of PV panel output power if the MPPT is forced to operate at a voltage of 20 V. 9 8 5 3 10 15 20 25 30 35

Describe the differences between smart grids and microgrids. How do microgrids integrate into smartgrids. Explain the differences and methods for communication for smartgrids and microgrids. How do these control systems work/coordinate with other systems.