The electric train model transformer plugs into 220-V ac and draws 0.35 A while supplying 10.5 A to the train, (a) What voltage is present across the tracks? (b) Is the transformer step-up or step- down?

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Q: A transformer connected to a 120 V (rms) ac line is to supply 12.0 V (rms) to a portable electronic…

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A: The transformer equation relating the primary and secondary voltages to the number of turns in the…

Q: An ideal neon sign transformer provides 9 250 V at 30.0 mA with an input voltage of 115 V. Calculate…

A: We know that-For an ideal transformer,The power input equals the power output,Input power of the…

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A: Since, Power can be written as, P=VI And also it is average of instantaneous current times voltage.…

Q: A transformer converts 240 V AC to 60 V AC. The secondary has 75 turns. The number of turns in…

A: Given, Vp=240 VVS=60 VNS=75 turns

Q: In dc generator the contacts to the rotating loop are made using a split ring and called 2 A) as…

A: DC generators are devices that convert mechanical energy into electrical energy. These devices work…

Q: A transformer has 380 primary turns and 1140 secondary turns. The input voltage is 120 V and the…

A: Given: Number of primary turns are 380 Number of secondary turns are 1140 Input voltage is 120 V…

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: A transformer on a pole near a factory steps the voltage down from 3.60X103 Volts (rms) to 120.…

A: We need to calculate power delivered to the primary, current in primary as well as secondary coils.

Q: A scale train transformer is plugged into 120 V ac and draws 0.35 A while supplying 7.5 A to the…

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Q: A transmission line that has a resistance per unit length of 4.30 x 104 n /m is to be used to…

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Q: A large power plant generates electricity at 12.0 kV. Its old transformer once converted the voltage…

A: Given Data:Voltage used to generate electricity Voltage gain by the old transformer Voltage gain by…

Q: Two identical single phase transformers are connected in V-V-connection across three-phase mains and…

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Q: In a transformer, two coils are wound around a toroidal iron core. Answer True or False. True A…

A: A transformer is an electrical device that is used to transfer electrical energy between two or more…

Q: Why doesn’t a transformer work with direct current? Why is ac required?

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Q: A transformer is to be used to provide power for a computer disk drive that needs 5.0 V (rms)…

A: Given that the value of primary and secondary voltage and secondary Current. Then We have to…

Q: A 46.5[V] AC source is connected to a transformer with 244coils/turns around the transformer. If we…

A: The objective of this question is to find out the number of turns required on the secondary coil of…

Q: A step-down transformer has 5,000 turns in its primary winding and is connected to a 240-Volts AC…

A: We know that:-In a transformer, The overall power of the transformer will be same.Power in primary…

Q: A step-down transformer has 63 turns in its primary coil and 20 turns in its secondary coil. The…

A: Given: Number of turns in the primary coil, Np=63 Number of turns in the  secondary coil, Ns=20…

Q: (a) A transformer has Np-273 primary turns and N,-1345 secondary turns. The input voltage is V-220 V…

A: Given data The number of turns in the primary is NP=273 The number of turns in the secondary is…

Q: The primary coil of an ideal transformer provides 2000 V at 0.01 A. The secondary coil operates on…

A: Voltage in primary coil, Vp=2000 VoltCurrent in primary coil, Ip=0.01 AVoltage in secondary coil,…

Q: An iron core transformer is as shown in the figure. The primary coil has Np = 2000 turns and the…

A: The number of turns in the primary Np=2000 turns The number of turns in the secondary Ns=5000 turns…

Q: The battery charger for cellphone contains a step-down transformer with a turns ratio 1:20, so that…

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Q: A transformer consist of a primary coil connected to a 120 V source that drive 4 A of current…

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Q: Can a transformer be operated by a DC waveform at its input? What would be the secondary voltage of…

A: Can a transformer be operated by a DC waveform at its input? What would be the secondary voltage of…

Q: The mutual flux in the core of a 47.9 - cycle transformer that has 800 primary turns and 190…

A: Solution: Given data, Primary turns N1 =800 Secondary turns N2 =190 Mutual flux = 2.17 × 10-6…

Q: Why does AC power alternate ?

A: Ac power is defined as a flow of charge that exhibits a periodic change in direction. This is known…

Q: A transformer is to be used to provide power for a computer disk drive that needs 7.0 V (rms)…

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Q: a step down transformer has an output of 12v and .5A when connected to a 120V line. assume no…

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Q: An AC transformer in Okahandja operates at input voltage of eight-and-a-half kilo-volts to suppy 120…

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Q: When I visit family in India, I usually need an adapter to use my US bought electrical devices (hair…

A: Given, Vinput=220 VVoutput=110Vnprimary=100

Q: A transformer has an efficiency of 80%. It works at 4 kW and 100 V. If the secondary voltage is 240…

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Q: A step-up transformer is designed to have an output voltage of 2 200 V (rms) when the primary is…

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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: A primary coil of a transformer is connected to a 120V source and draws a 12 A. The secondary coil…

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Q: A transformer having efficiency of 90% is working on 200 V and3 kW power supply. If the current in…

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