Consider the circuit in (Figure 1). Part A Find the average power delivered by the ideal current source in the circuit if ig = 100 cos 1250t mA. Express your answer to three significant figures and include the appropriate units. Templates Symbols undo redo reset keyboard shortcuts 'help P = Value Units Submit Request Answer Provide Feedback Figure 1 of 1 5 kN A80 nF
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- 27) The meter constant of a 280 volt, 53 ampere, single phase energy meter is 1780 revolutions per KWh When tested at three fourth load, rated voltage and 0.3 power factor, the meter is found to make 98 revolutions in 60 seconds. Determine the percentage error at three forth load.Question No.14: A peak load on the thermal power plant is 75 MW. The loads having maximum demands of 35 MW, 20MW, 15 MW and 18MW are connected to the power plant. The capacity of the plant is 90 MW and annual load factor is 0.53. Calculate the average load on power plant, energy supplied per year, demand factor and diversity factor.1. A resistor, in series with a 138-microfarad capacitor, is connected to a 60-cycle source. If the voltage drop across the capacitor is 115 volts and the power taken by the circuit is 922 watts, calculate (a) the circuit current, (b) the ohmic value of the resistor, (c) the line voltage, (d) the circuit power factor. Please show complete solution and the circuit diagram. Please round off answers up to the 3rd decimal place. Thank you!
- A heater has 3 equal induction-free elements, each with a resistance of 10 ohms. The elements is delta connected and the oven is connected to a three-phase voltage of 230V / 50Hz a) How much power is developed in the oven in total? The elements is now star connected instead and the oven is connected to 400V three-phase voltage. b) How much power is being developed in the furnace now? c) How large will the power be if the elements in the star connection are connected to 230V three-phase voltage? d) How would you connect the elements if you want to use 230V single-phase voltage and want the same power as under question b)? e) How much current does the oven draw now? Comment on the result ..(a) Is a wattmeter required to measure the real power delivered to a resistive load? (b) A wattmeter will indicate zero when the current lags (or leads) the voltage by 90 0 . (c) An incandescent lamp, rated at 100 W, gives a certain amount of light when placed across the 120 V ac power line. Would the amount of light increase, decrease or remain the same, when the lamp is placed across a 120 V dc power line? Explain your answer.Please show a complete step-by-step solution. Thank youGive your final answers in at least 2 decimal places - make it 3 or 4 decimal places whenever required in the problem. If you are doing a step by step calculation, maintain 6 decimal places in your in-between calculations to hit good accuracy in your final answers. Use 1 hp = 746 Watts in your conversion whenever necessary. A three-phase, 30-hp, 60-Hz, 1900-V, 500 r/min, salient-pole synchronous motor has direct-axis and quadrature-axis reactances equal to 36.38 Ohms/phase and 24.25 Ohms/phase, respectively. Neglecting losses, determine the power, in watts, drawn by the motor if the field current is adjusted so that the excitation voltage is equal to 2.1 times the applied stator voltage, and the load is increased until maximum reluctance torque occurs. Give your final answer in 2 decimal places. Correct Answer: 172,167.36 ± 0.01
- Subject:Circuits IIA 300- kw alternator has an efficiency of 90 % at full load. Calculate the power losses?a PT and CT are used in conjunction with a wattmeter. the PT ratio is 1000:1 and the CT ratio is 1200:4. if the actual power is 270 MW, what will be the expected reading of the wattmeter in watts? BOX THE FINAL ANSWER AND USE 4-5 DECIMAL PLACES FOR THE ANSWER subject: ELECTRICAL APPARATUS AND DEVICES lesson: INSTRUMENT TRANSFORMUsing Circuit Analysis answer the ff. 1. If R = 1kohm, what is the equivalent resistance (in kohm) seen from the source? Note: Do not round-off intermediate answers; express the final answer in three decimal places. 2.If v_s is 21 V, what is the power (in mW) delivered by this source? Note: Do not round-off intermediate answers; express the final answer in two decimal places.
- A computer's power supply converts mains AC to low-voltage regulated DC power for the internal components of a computer. You are building a new computer. You are deciding which type of power supply to install. Which of the following definitions BEST describes a valid type of power supply? Correct Answer: A single-rail power supply provides one rail (PCB trace). This provides the best safety for the computer by providing a single point of shutdown in the event of a short circuit. Correct Answer: A single-rail power supply provides one rail (PCB trace) used to always provide equal wattage to all devices attached to the power supply. Correct Answer: A dual-rail power supply provides separate rails (PCB traces) used to provide equal wattage to the devices attached to each rail. Correct Answer: A dual-rail power supply provides separate rails (PCB traces) used to balance the power load between multiple circuits, which prevents any one circuit from becoming overloaded.How to convert 10 kW of power into the unit dBW? I am very confused. Need immediate help, please.A base load station having a capacity of 18 MW and a standby station having a capacity of 20 MW shares a common load. Determine the annual load factors and plant capacity factors of two power stations from the following data:Annual standby station output = 7·35 × 10^6 kWhAnnual base load station output = 101·35 × 10^6 kWhPeak load on standby station = 12 MWHours of use by standby station/year = 2168 hours