True or False: An example of a step-down transformer would be a household appliance changing the transformer voltage from the 120-V outlet to 22.5 V required by the appliance.
Q: Evaluate the advantages and disadvantages of transmitting power by AC and DC and the implications…
A: Advantages of AC Transmission:Efficient over Long Distances: AC transmission is more efficient over…
Q: The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket…
A: The potential of the batteries is VB=9.0 V The current in the batteries is IB=249 mA The potential…
Q: A generator supplies (2.460x10^2) V to the primary coil of a transformer. The primary has 50 turns…
A: Given data : Voltage in primary coil Vp = 2.460 × 102 V Number of turns in primary coil Np = 50…
Q: A transformer has 496 turns on its primary and 122 turns on its secondary. (a) Is this a step-up or…
A: (a) For transformer, Here, Vs, Vp, Np and Ns represent the secondary voltage, the primary voltage,…
Q: A transformer has 60 turns in the primary and 1935 turns in its secondary. The voltage across the…
A:
Q: What is the voltage output (in V) of a transformer used for rechargeable flashlight batteries, if…
A:
Q: A transformer has 400 turns on its secondary and 100 turns on its primary. The primary is connected…
A: Given : Number of turns in primary, NP = 100 Number of turns in secondary, NS = 400…
Q: Suppose a large power plant generates electricity at 12.0 kV. Its old transformer once converted…
A: The equation for the current in terms of power and voltage is,
Q: The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket…
A: Given that primary and secondary voltages and secondary current in the transformers Vs = 9 V Is =…
Q: TRUE or FALSE: In an ideal step-down transformer, the current at the secondary is lower compared to…
A:
Q: A transformer with a turns ratio (secondary/primary) of 1:18 isused to step down the voltage from a…
A: Given: A transformer with a turns ratio (secondary/primary) = 1:18, step down the voltage from a…
Q: The sketch represents an ideal transformer. What is the current in the secondary if the primary side…
A: This is a step up transformer. NpNs=VpVsCalculate the voltage generated across the secondary…
Q: A mobile x-ray imaging system operates on 110 V AC power. Its maximum capacity is 110 kVp and 100…
A:
Q: In a non-ideal transformer, provide a physical explanation as to why the current in the primary coil…
A: consider the transformer arrangement as shown
Q: She suggests that he modify an old transformer that they don't need anymore to do the job. The old…
A:
Q: Current Attempt in Progress Reconfiguring a Transformer. You and your team are exploring an…
A: Step 1:Step 2:Step 3:Even 1176 turns is also acceptable answer.Step 4:
Q: A transformer has 400 turns on its secondary and 100 turns on its primary. The primary is connected…
A: Given: The number of turns in primary coil is N1=100 The number of turns in secondary coil is…
Q: The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket…
A:
Q: transformer has 558 turns on its primary and 101 turns on its secondary. (b) If a voltage of 125 V…
A:
Q: The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket…
A: Vs = 9 V Is = 252 mA = 0.252 A Vp = 120 V
Q: The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket…
A:
Q: A certain transformer has exactly 119 turns on its primary side and exactly 199 turns on its…
A:
Q: 21. From the energy conservation point of view, the input power of the first transformer must be…
A: From the given diagram of the transformers, it can be observed that both the transformers have 3…
Q: Why small energy losses do occur in transformers?
A:
True or False: An example of a step-down transformer would be a household appliance changing the transformer voltage from the 120-V outlet to 22.5 V required by the appliance.
Step by step
Solved in 2 steps
- X2. A transmission line that has a resistance per unit length of 4.50x10−4 /m is to be used to transmit5.00 MW across 400 mi (6.44x105 m). The output voltage of the source is 4.50 kV. (a) What is the lineloss if a transformer is used to step up the voltage to 500 kV? (b) What fraction of the input power is lostto the line under these circumstances? (c) What If? What difficulties would be encountered in attemptingto transmit the 5.00 MW at the source voltage of 4.50 kV?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.A transformer is used to supply a 14.5 V model train with power from a 132V wall plug. The train operates at 64 W of power. (a) What is the current in the secondary coil of the transformer in ampere? (b) What is the current in the primary coil in ampere? (c) What is the ratio of the number of primary to secondary turns? (d) What type of transformer is this transformer
- To ignite a mixture of gasoline and air inside an internal combustion engine--like in your car--a spark is generated by a high voltage across the spark plug, usually in the 10's of thousands of volts, but the battery is only 12 V. This massive increase in voltage is achieved through a transformer called the 'ignition coil'. A typical ignition coil has a primary with 300 turns wrapped around a radius of 2 cm over a linear distance of 15 cm. The secondary has 60,000 turns of wire over the same cylinder. The spark is generated when the current is suddenly shut off to the coil. Assuming that the magnetic field is uniform inside the primary and secondary coils, and that all of the magnetic field lines that go through the primary go through the secondary, what voltage is generated in the secondary coil if the current in the primary coil drops from 10 A to 0 A at a steady rate over the course of 50 mirco-seconds? Give your answer to 2 significant digits. Hint: Remember the definition of flux…The transformer on a utility pole steps the voltage down from 10000 V to 220 V for use in a college science building. During the day, the transformer delivers electric energy at the rate of 10.0 kW. a) Assuming the transformer to be ideal, during that time, what are the primary and secondary currents in the transformer? b) If the transformer is only 90 % efficient (but still delivers electric power at 10.0 kW), how does its input current compare to the ideal case? c) At what rate is heat lost in the nonideal transformer? d) If you wanted to keep the transformer cool and to do this needed to dissipate half of the joule heating of part c) using water cooling lines (the other half is taken care of by air cooling), what should be the rate of flow (in liters per minute) of water in the lines? Assume the input cool water is at 68∘∘F and the maximum allowable output water temperature is 98∘∘F} .