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What are the principal differences between an MHD generator and a conventional generator?
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- Does an MHD generator employ Faraday’s law of induction?A large power plant generates electricity at 12.0 kV. Its old transformer once converted the voltage to 315 kV. The secondary coil of this transformer is being replaced so that its output can be 725 kV for more efficient cross-country transmission on upgraded transmission lines. V1 = 315 kVV2 = 725 kV What is the ratio of turns in the new secondary to the number of turns in the old secondary? What is the ratio of new current output to the old current output for the same power input to the transformer? If the upgraded transmission lines have the same resistance as the original ones, what is the ratio of new line power loss to the old?What is the magnitude of the average emf induced in the entire coil?
- An electric power station that operates at 15 kV and uses a 20:1 step-up ideal transformer is producing 370 MW (Mega-Watt) of power that is to be sent to a big city which is located 240 km away with only 2.5% loss. What is the resistance of the TWO wires that are being used?A transformer has 472 turns on its primary and 108 turns on its secondary. (a) Is this a step-up or a step-down transformer? (b) If a voltage of 103 V is applied to the primary and a current of 0.4 A flows in these windings, what are the voltage output of the secondary and the current in the secondary?voltage Vcurrent AA step-down transformer has double the amount of primary windings compared to the secondary windings. What would be the secondary current if the primary current is 0.5A? a. 0.25A b. 1.0A c. 2.0A d. 0.5A
- 8 What is the name of the generator used as a Booster in the Transmission line? a. Series Generator b. Compound Generator c. Shunt Generator d. Separately Excited GeneratorThe load resistance on the output side of the transformer is 100Ω. What is the current flowing on the primary side (IP) of the transformer IP = _______________A step-down transformer produces a voltage of 6.0 V across thesecondary coil when the voltage across the primary coil is 120 V.What voltage appears across the primary coil of this transformer if120 V is applied to the secondary coil?
- A step-up transformer has Np = 46 turns on the primary coil and Ns = 669 turns on the secondary coil. If the primary coil has an input voltage of Vp = 2.94 V, what is the output voltage (Vs) on the secondary coil? Your answer should be in volts, but you don't need to show the units.The plug-in transformer for a laptop computer puts out 22.5 V and can supply a maximum current of 3.00 A. Find the maximum input current if the input voltage is 240 V.Suppose a 240-volt voltage is applied to the primary coil of a step-down transformer whoseratio of primary windings to secondary windings is 2:1. What will the output voltage be ifa. The primary voltage is a 60-Hz AC voltage?b. The primary voltage is a DC voltage?