The instantaneous current in an ac circuit is given by i = 50 sin ot 7 The current becomes 45 mA at 8 milli seconds. What will be the frequency of the supply ?

Q: An alternating voltage is given by e= 200 sin 2π 50t . Then find the time taken to + 60 V for the…

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Q: When a current of 2A flows in a coil having 650 turns. If the coil inductance is 850 mH, the flux…

A: Given, Current, I= 2A Turns, N= 650 Inductance, L= 850 mH

Q: The drawing shows three ac circuits, as shown below, each connected to identical generators.…

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Q: The energy stored in an 1400 turns inductor is 15 Joules, if the inductance value is 1 H. Find (a)…

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Q: A 240 V, 25 Hz single-phase ac generator is connected to a 20 Q resistor. Find the instantaneous…

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Q: A single-phase AC voltage controller has a resistive load R = 10 Ohm, and %3D the RMS input voltage…

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Q: A coil with an air core has a resistance of 14.70. When it is connected to a 42V, 60 Hz ac source,…

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Q: Example (5) Calculate the pitch factor for a winding having 24 stator slots when the coil spans 5…

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Q: A three-phase AC supply is generated, when three coils are placed apart.

A: Three phase AC supply generation

Q: 3. AC Analysis 1:1 I 586 0 Vị 19µF 36 mH V; is a sinusoidal AC voltage source having frequency 110…

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Q: 11.11 Sketch the current waveform for the circuit below given that the breakover potential is 25V…

A: The Given Circuit consist of the Triac connected in series with the 4.7kohm resistor, the breakover…

Q: An alternating current i is represented by i = 10 sin942t A. Determine (a) the frequency, (b) the…

A: i=10 sin 942 t A(a) w=942 rod/sec2πf=942f=9422πHzf=149.92 Hzf≈150 Hz(b) Period=1f=1150=6.66 m…

Q: Three similar coils are connected in star taken at a total power of 1.5KW at a P.F of 0.2 lagging…

A: Let the resistance and inductive reactance of each coil be R and XL Line voltage VL= 400V Phase…

Q: A sinusoidal current has a rms value of 3 amperes, its maximum value will be 3.46 amp 0.866 amp O…

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Q: 1. An alternating current is given by i = 10 sin314t. with reference to time t = 0, how long will it…

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Q: A sinusoidal current has a rms value of 3 amperes, its maximum value will be O 2.1213 amp 3.46 amp…

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Q: 23. If the impedance of the circuit is 50ohm and the resistance is 8ohm. Find the power factor  A.…

A: 24.  Given: Impdedance,Z=50ΩResistance,R=8Ω

Q: IMPEDANCE AND ADMITTANCE OF AC CIRCUIT WHAT ARE THE DIFFERENCE SHOW CIRCUIT AND TABLES

A: We need to tell about the difference between impedance and admittance .

Q: triangle waveform with following specifications in Table B1. Table B1 RMS Voltage 50mV Number of…

A: In this question , we will make triangular waveform with given data and also find secondary current…

Q: QUESTION 1 Given an AC source having a voltage v(t)=13sin(219t + 11°) V, find the period of the…

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Q: Assume you are working on sinusoidal ac supply voltage which is in the form of 150 sin 220 t. So…

A: In the theory of alternating current, a sinusoidal waveform can be generated by using a single-coil…

Q: Determine the instantaneous value of the alternating current in (A), which is represented by…

A: Given expression of current: i(t)=10sin(25t-15) A

Q: The voltage in an alternating current circuit at any time t seconds is given by v = 60 sin 40t…

A: Given, The voltage expression in an ac circuit is,      v = 60 sin(40t) volts

Q: An alternating current is given by an equation i=7 sin( 550t + 35°), the instantaneous value of…

A: We need to tell about instantaneous Value of current .

Q: A sinusoidal alternating current is represented by the equation: i = 115 sin 311.24t A (1) Calculate…

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Q: 9) An ac circuit takes a load of 160 kva at a lagging power factor of 0.75 when connected to a 460…

A: Given  Apparent power=160 kva  Power factor =0.75 Source voltage=460 v  We need to find real…

Q: A flux of 655 μWb passing through a 88 turn coil is reversed in 160 ms. Find the Average EMF…

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Q: 28. Assume an inductor is connected to a 180-V AC line and the inductor has an induced voltage of…

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Q: When an AC source is connected across a 12.02 resistor, the output voltage is given by AV = (100…

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Q: A sinusoidal current has a rms value of 3 amperes, its maximum value will be O 3.46 amp O 0.866 amp…

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Q: 19) Calculate the average current in this waveform shown below, which is one cycle from -4 sec to 10…

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Q: The generated or induced AC voltage is independent to the speed of the rotor. O True O False

A: Correct option is False we know they average Emf induced per conductor is (PFN) /60 volts Here  P is…

Q: An alternating voltage v = 100 sin 120pi t volts is applied across a coil of resistance 32 Ω…

A: Given: An alternating voltage is v=100sin120πt And coil of resistance R=32 Ω Inductance of coil,…

Q: When a current of 1A flows in a coil having 1450 turns. If the coil inductance is 900 mH, the flux…

A: Flux linking in coil can be calculated as by the given formula.

Q: A 70-Vac source has the following waveform. Determine: a. the instantaneous voltage when t = 120 ms…

A: Given data: Actual given value Vrms=70 V a). The instantaneous voltage time t=120 ms=120×10-3 s b).…

Q: A coil draws 1875 watts when connected to a 165 V dc source. It consumes 30.72 watts when use on a…

A: I have checked every calculation but not getting 39 mH but my solution is 100% correct. There may be…

Q: T/6"); i, = 5 sin(wt – n/12); and is resultant current. 20 sin(wt + n/3). Determine the equation of…

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Q: QUESTION 1 Given an AC source having a voltage v(t)=22sin(87t + 22°) V, find the period of the…

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Q: A 3-phase induction motor delivers 74,600 watts while operating at an efficiency of 80 percent and a…

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Q: An incandescent bulb is connected to 220-V (rms) AC source. To obtain the same brightness, the bulb…

A: We need to select correct option for given statement

Q: 5. The voltage and current waveform are expressed as follows in a power system. Calculate: the…

A: Given,…

Q: An alternating voltage is denoted by e = 200 sin 2π 50 t. Then find the time taken to + 60 V for the…

A: solution: e = 200 sin 2π 50 t instantaneous value of emf at 12 ms e=+60 v    t=? and t=12 ms   e=?

Q: A small ac motor used in washing machine is in effect, an RL circuit. If the machine takes 311 watts…

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Q: 100 Hz ac circuit has a 300 ohm resistor, a 900 milli-henry inductor, and a capacitor all in series.…

A: inductive reactance=2×π×f×L where L is inductor. capacitive reactance=12×π×f×C. Z=R2+(XL-XC)2.

Q: ww v(t)=28.284 cos(ot + 55°) + S' I

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Q: The energy stored in an 1800 turns inductor is 10 Joules, if the inductance value is 4 H. Find (a)…

A: Energy stored =0.5 L×I2 Inductance=number of turns×flux current in coil. EMF =L×didt.

Q: Choose the correct answer.

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Q: A 5000 hp 3-phase, induction motor operates at 80% efficiency and 0.85 power factor lag. The…

A: Given values are -

KVL and KCL

KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.

Sign Convention

Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.