.An alternating current is represented by the equation l = 20 sin(100rt). Compute its frequency

Q: A motor has an armature resistance of 3.65ohms. If it draws 8.20A when running at full speed and…

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Q: A power transmission line feeds input power at 2300 V to a stepdown transformer with its primary…

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Q: A coil consisting of 800 turns, very closely spaced, has an inductance of 4mh and a current of…

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Q: Compute for the current across the circuit.

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Q: The ratio of transformation is 50. If 220V AC is supplied to its primary coil, voltage in secondary…

A: Given: The ratio of transformation is 50. The supplied voltage in the primary is 220 V.…

Q: What is the voltage output (in V) of a transformer used for rechargeable flashlight batteries, if…

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Q: A direct current of 25A creates a flux of 1.4 X 10-4 Wb in a coil of 500 turns.  What is the…

A: Given that, Current I = 25 A Flux ϕ=1.4×10-4 Wb Number of turns = 500

Q: . Show that the power loss in transmission lines PL, is givenby PL where is the power transmitted…

A: Given data The power transmitted to the user is PT The delivered voltage is V The resistance of…

Q: A transformer has a voltage input of 120 V and an output of 1500 V. If the primary coll has 200…

A: Input voltage (V) = 120 volts Output voltage (V') = 1500 volts Number of loops in primary coil (N) =…

Q: A transformer has a turns ratio of 2.5:1 the primary voltage is 208V what is the voltage of the…

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Q: Electromotive force that has 40-volt is applied to an LR-series circuit in which the inductance is…

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Q: If the instantaneous current of an AC is given as l(t) = 13A Sin(120nt), then the value of frequency…

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Q: Consider an LC circuit with the frequency of oscillations in the circuit 247.1 Hz. What is the…

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Q: An emf of 8V is induced in a given coil when the current in it changes at the rate of 32 A/ sec.…

A: Given data:   Induced emf, ε=8V    Current, dIdt= 32 A/sec

Q: The S.I unit of magnetic induction is * O Weber O Tesla O Newton meter Newton x Ampere/ meter

A: We have to choose the correct alternative for the S.I unit of magnetic induction.

Q: Determine the frequency of the given instantaneous equation e=10(1000t - 69 degrees) V O 159.1Hz O…

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Q: Show that Im where I is the root mean square value of alternating current and I, the peak value.

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Q: If the instantaneous current of an AC is given as I(t) = 13A Sin(120Ttt), then the value of…

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Q: The primary coil of an ideal transformer provides 100 W of power. If the emf of the secondary coil…

A: Given data:  An ideal transformer  Power of primary coil (P1) = 100 W Voltage of secondary coil (V2)…

Q: An alternating voltage given byuiAI V = 70 sin 100 nt is connected across a pure resistor of 25 Q.…

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Q: An ideal transformer steps down a voltage of 240V to supply power to a lamp with a power rating 3V,…

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Q: When 9 A of AC current at 123 V flows in the primary coil of an ideal transformer, how many amps at…

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Q: The voltage equation in an alternating current circuit is given as V()= 100 v2 sin 100nt where V0 is…

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Q: If magnetic coils are powered by AC, why don’t their contacts open and close 120 times per second?

A: The overload relay (OLR) is similar in design which is used in manual motor starters. The basic…

Q: If a sinusoidal wave has a frequency of 50HZ and RMS current of 30 A, which equation represents the…

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Q: Find the value of the current flowing through a capacitance 0.5 u F when connected to an AC source…

A: Write the given data. V=150 Vf=180π HzC=0.5×10-6 F

Q: If the instantaneous current of an AC is given as I(t) = 13A Sin(120tt), then the value of frequency…

A: The current across a circuit is defined as the rate of flow of charge Q per unit time period t ,…

Q: An ideal step-up transformer with turn ratio 1:30 is supplied with an input power of 120 W. If the…

A: According to the ideal transformer, V1V2=N1N2V1=N1N2V2=130210 V=7 V Find the input current.…

Q: Calculate the inductance of a solenoid that is 1.5 cm long and 3.0 mm in diameter, with 300 turns of…

A: Given data:     Length of the solenoid, l = 1.5cm = 0.015m      Diameter of the solenoid, d = 3mm =…

Q: 1. An alternating voltage is given by v = 171.5 sin 415t volts. Find: a. The r.m.s. voltage. b. The…

A: Note-           Bartleby's guidelines allowing answer only the first three subparts.

Q: In a household, a business is run for an average of 6 hours per day. The total power consumed by a…

A: Given data: Daily uses = 6 hours Power consumed by computer = 204 W Power of light bulb = 90 W…

Q: The unit of a capacitive reactance is a. Ohms b. Tesla c. Farad d. Henry

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Q: An alternating current completes 100 cycles in 0.1 s. Its frequency is:

A: Given that, Number of cycles = 100 Time = 0.1 s

Q: In the circuit below, a battery supplies a constant voltage of 40 V, the inductance is 2 H, the…

A: Supply voltage, V = 40  V The inductance, L= 2 HThe resistance, R = 10 Ω

Q: A current of 5.75A flows in the coul of wire from an applied voltage of 120V. The motor operates at…

A: I = 5.75 A  Vapplied = 120 V  Back emf ( E ) = 32 V

Q: When 7 A of AC current at 124 V flows in the primary coil of an ideal transformer, how many amps at…

A: For the transformer, the relation between the current and voltage in primary and secondary coil is…

Q: The voltage across the input terminals of a transformer is 240 v. The primary has 50 loops and the…

A: Primary voltage, Vp = 240 V Number of turns in primary, Np = 50  Number of loops in secondary, Ns =…

Q: The input voltage of a transformer is 4 V. The primary coil has 50 loops and the secondary has 25…

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Q: Can the Biot-Savart Law apply to a wire carrying alternating current?

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Q: An alternating current is given by i = 2cos(50pt – 0.4) amperes, where t is time in seconds.…

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Q: The primary coil in an ideal transformer has 1000 turns of wire and an emf of 100 V. The secondary…

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Q: Calculate the peak voltage of a generator that rotates its 215 turns, 0.100 m diameter coil at 3600…

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Q: A BJT has an IB of 50 µA and a βDC of 75; IC is

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Q: In a transformer, a primary winding has 220V and 1A. If the second winding has 460V, what is the…

A: Given:potential, V1 = 220 VCurrent, I1 = 1 Apotential, V2 = 460 V It is required to find the output…

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.