A transformer has 512 turns on its primary and 116 turns on its secondary. (a) Is this a step-up or a step-down transformer? step-upstep-down     (b) If a voltage of 104 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

Q: A transformer for a distribution line receives 12 volts ac and step up to 240 volts ac. The…

A: a) Find the number of turns in the primary coil. NP=VPVS×NS=12 V240 V×300 turns=15 turns b) Find the…

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 transformer has a primary voltage of V,= 400 V and primary current of I,= 1.5 A. If the measured…

A: Given : primary voltage, Vp = 400 V              primary current, Ip = 1.5 A              Secondary…

Q: A transformer is used to supply a 12-V model trainwith power from a 110-V wall plug. The train…

A: Given:Vp(primary winding voltage)=110 VVs(secondary winding voltage)=12 VPout(output power)=50 WNow,…

Q: A transformer steps 300 V down to 7.5 V to operate an arc welder that uses a current of 190 A. The…

A: A transformer is a passive device which uses electromagnetic induction to transfer energy from one…

Q: 2.0kA of current at 500 volts is produced by a generator. A transformer is used to step up the…

A:

Q: Which statement is true about the transformer? Select oner A The main advantage of the step-up…

A: This question is based on Alternating Currents chapter. Transformer works on the principle of Mutual…

Q: A transformer has 200 turns more in the secondary than in the primary. Its input and output voltages…

A: Let us consider, The number of turns in primary coil is NP. The turns in secondary coil will be…

Q: The maximum value of the emf in the primary coil (Np = 1600) of a transformer is 215 V. (a) What is…

A: Given that:- Vp=215 volt  Np=1600 Ns=350

Q: A 20kVA closer transformer located inside a building is used to step down the voltage for the…

A: a) Voltage provided:     V21 = 4800 / 20 = 240 V     V22 = 4800 / 40 = 120 V   b) Current provided :…

Q: A step-up transformer is designed so that the output of its secondary winding is 240 V when the…

A:

Q: 5. A 60 kVA, 1600V/100V, 50 Hz, single-phase transformer has 50 secondary windings. Calculate (a)…

A: Given :-  v1 = 1600 V v2 = 100 V f= 50Hz N2 = 50 turns a)  rating of transformer =  v1 I1 =  V2I2  =…

Q: A 125 kVA transformer having primary voltage of 2000 V at 50 Hz has 182 primary and 40 secondary…

A:

Q: Consider a transformer, used to recharge rechargeable flashlight batteries, that has 500 turns in…

A: Given: The turns in the primary coil is 500. The turns in the secondary coil is 7. The input voltage…

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

A: GIVEN : Vold=335 kVVnew=750 kV (a) Ratio of no. of turns in secondary coil : Ns,newNs,old=VnewVold…

Q: An American traveler in China carries a transformer to convert China's standard 220 V to 120 V so…

A:

Q: A transformer inside the power supply for a portable CD player has 500 turns in the primary coil and…

A:

Q: A transformer has 1000 turns in the primary coil and 100 turns in the secondary coil. If the primary…

A:

Q: A transformer has 900 turns on its secondary and 100 turns on its primary. The primary is connected…

A: (a) The voltage output of the secondary coil is VS=NSNPVP=90010014 V=126 V Therefore, the output…

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: A transformer has a turn ratio of NP/NS = 2/7. The transformer is connected to a 120-V line. (a)…

A:

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: A transformer has 20 turns of wire in its primary coil and 80 turns on its secondary coil. (a) Is…

A: Given : Number of turns in primary coil (Np) = 20 Number of turns in secondary coil (Ns) = 80…

Q: If you want to use a step-up transformer to convert 5V DC to 10V DC, what turn ratio would you need?…

A: Transformer work on  the principal of mutual induction between two coil (primary and secondary).…

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: A 75-turn, 10.0 cm diameter coil rotates at an angular velocity of 8.00 rad/s in a 1.25 T field,…

A: a. peak emf is

Q: The primary coil of an ideal transformer is connected to a 120 V source and draws 1.0 A. The…

A:

Q: The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket…

A:

Q: A machine uses a step-up transformer where a 110V input is converted to 220V output Calculate the…

A: Given data: Primary voltage, Vp=110 V Secondary voltage, Vs=220 V Number of turns in primary coil,…

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

A: We know that in a transformer:Transformation ratio r=VoutVin=NSNP ≡Voltage outVoltage in=Turns on…

Q: A transformer steps the line voltage down from 110 to 9.0 V so that a current of 0.50 A can be…

A:

Q: A transmission line that has a resistance per unit length of 4.20 ✕ 10-4 Ω /m is to be used to…

A:

Q: A transformer has 600 turns on its secondary and 100 turns on its primary. The primary is connected…

A: Given data: Number of turns on primary coil is Np=100. Number of turns on secondary coil is Ns=600.…

Q: An 18-kV neon sign is connected to a transformer and plugged into a conventional outlet (U.S.). If…

A: given: input voltage (V1)=18kV conventional output(V2)=120V turns in primary coil (N1)=300 Turns in…

Q: A transformer has 600 turns on its secondary and 100 turns on its primary. The primary is connected…

A: Given A transformer has 600 turns on its secondary and 100 turns on its primary. The primary is…

Q: A transformer has 472 turns on its primary and 108 turns on its secondary. (a) Is this a step-up or…

A: Therefore it is a step down transformer

Q: In a well-designed transformer with an iron core, the secondary coil has twice as many turns as the…

A: The secondary coil has twice as many turns as primary coil in a well designed transformer.

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

A:

Q: The 335 kV AC electricity from a power transmission line is fed into the primary coil of a…

A: Given Data:   The input voltage is, Vp=335 kV The fraction of the numbers of turns in secondary coil…

Q: In the high-voltage circuit of the X-ray generator, a transformer is used to supply a 50000 V to…

A: We know, for transformer the folwing relation holds: VpVs = IsIp = NpNsVp = primary voltage = 150VVs…

Q: Transformers (cont.) Part E- The primary coil of a transformer has 200 turns and the secondary coil…

A: Since the efficiency is not given, it is considered to be 1

Voltage Across Inductor

An actor is a passive electrical component that consists of a coil bent in the form of wire which uses electromagnetism to produce electric current through the coil. When the electric current flows through a conductor that is the coil, a magnetic flux is developed around the conductor. This flow of current through the coil creates a magnetic field based on Fleming's Right-hand thumb rule. If there is any decrease in the current passing through the inductor, then the magnetic field will also decrease and energy is released through the generation of electric current. There is also a secondary voltage inducing in the same coil due to the magnetic flux, since it opposes any changes in the electric current flowing through the circuit. An inductor is also called choke, coil, or solenoid. A choke is designed to block certain frequencies when the DC current passes. A winding coil is coated with insulation to give extra insulation and protect the circuit. They are usually tightly wrapped around a central core which is cylindrical in nature so that the magnetic flux can be induced. The solenoid is a three-dimension coil that is used to exhibit electromagnetism when the magnetic field is developed due to the current flowing through the coil. The sign convention of the inductor is the same as the power dissipating device. When the current flows into the positive side of the voltage across the inductor, the value is positive and the inductor dissipates power whereas when the inductor releases the power back to the circuit, the current has a negative sign convention.