In a power network, 380kV is recorded at a 400kV bus. A 60MVAR, 400kV shunt reactor is connected to the bus. The reactive power absorbed by the shunt reactor is MVAR.
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- 08. Consider a solar PV system with Number of PV modules: 4 The number of PV cells in one PV module: 28 Arca of cach PV cell= 134 cm (take insolation valuc as 1150 W/m and efficicncy as 15% ) For the connection schemes a &b, Calculate the following for the PV Panel: a) If the Four PV modules are connected in Scrics: a) Total output power b)Total output voltage c)Total output currentWhat is the load current for the circuit shown in the figure? Please choose one: a. 9.0 mA b. 7.5 mA c. 3.0 mA D. 6.0 mA1) The term Bi is defined as Select one: O a. Negative change in reference bus power to the power change DPi on bus i O b. All of these 1/Pfi Clear my choice
- Q4. The source current in the circuit shown is in Figure 3a) What impedance should be connected across terminals a,b for maximum average powertransfer?b) What is the average power transferred to the impedance in (a)?c) Assume that the load is restricted to pure resistance. What size resistor connected across a,bwill result in the maximum average power transferred?d) What is the average power transferred to the resistor in (c)?vFor the simple equivalent circuit of 0.017 m2 PV cell shown below, the reverse saturatoin current is I0= 4 * 10-11 A and at an insolation of 1-sun the short circuit current is Isc = 6.4 A. At 25 degrees C, find the following: a. The open circuit voltage b. The load current and the output power when the output voltage is V = 0.55 V c. The efficiency of the cell at V=0.55 VThe drawback to using this equivalent circuit, however, is that it is defined for a set of operating conditions that might not match the actual operating conditions. a.pi b.hybrid-pi c.hybrid d.re
- Variation of which of the following parameter is not consider as power quality problem for industry?VoltageCurrentPowerFrequencyDesign a 24v zener regulated power supply circuit that will power a 500 ohms load with 1A of of current. Determine the power rating of both bleeding resistor and load resistor. Note the computed power dissipation differ from the required power rating of the device.The terminal p.d. of a d.c. source is 22.5V when supplying a load current of 10 A. If the emf is 24V calculate (a) the internal resistance and (b) the resistance of the external load. (c) determine the power and energy dissipated by the external load resistor in 5 minutes
- Determine the branch currents Is, Igandl, in ampere. TVⒸ so www 14 Eng al. The current in ampere 11 [Select] b). The current in ampere 12 [Select] 60 www d. The current in ampere 13 [Select] 40Two batteries, A and B, are connected in parallel and an 80 ohm resistor is connected across thebattery terminals. The e.m.f. and the internal resistance of battery A are l00V and 5 ohm respectively,and the corresponding values for battery B are 95V and 3 ohm respectively. Find (a) the value anddirection of the current in each battery and (b) the terminal voltageConsider Two same size PV Modules which are connected in Parallel. The specification of each module is given as: Number of cells = 36, Area of each cell is 12 cm x 12 cm. (Assume the necessary data) Choose from the following the correct statement. a. The output voltage of this panel is 18 V, the output power is 155W b. The output voltage is this panel 18V, the output power is 75W c. The output voltage is this panel 36 V, the output power is 155W d. The output voltage is this panel 36 V, the output power is 75W