An uncharged condenser in series with a 120-volt voltmeter of 10,000 ohms resistance is suddenly connected to a 100 V battery. One second later, the voltmeter reads 60 V. Determine the rate at which the voltage across the condenser is charging.

Q: A resistance of 2/(t + 20) Q and inductance of 4 H are connected in series to a battery of unknown…

A: Given that  R= 2/(t+20) ohm L= 4 H i1= 0 A , t1= 0sec i2= 50A , t2= 2 sec

Q: What is the cost per kilowatt hour for the energy delivered by a typical alkaline 9-V “transistor”…

A: To solve this problem, first we need to finding the Power and Energy: Power…

Q: Typical replacement for a 100 W incandescent bulb is a 20 W LED bulb. The 20 W LED bulb provides a…

A: Given,  Rating of incandescent bulb is 100 W.   Rating of LED bulb is 20 W.   The bulb is turned on…

Q: A string of three insulators has a self capacitance of 10 times its pin-to-earth capacitance. Then…

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Q: A PMMC type voltmeter, having a full scale reading of 250 V and an internal resistance of 400 kilo…

A: Given: A PMMC type voltmeter, having a full scale reading, V = 250 V Internal resistance, Rv = 400…

Q: Determine the cost per kilowatt hour for the energy delivered by a typical alkaline 9-V “transistor”…

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Q: A PMMC instrument has internal resistance of 0.59 kn and gives full scale deflection for resistance…

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Q: 10. In an AC circuit containing a resistance load only: a) Does the current reach its maximum peak…

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Q: Suggest any one solar collector that is appropriate to produce the electricity by using solar heat…

A: Different energy sources are required in day to day life. These energy sources can be renewable or…

Q: The current through a 10-ohm lamp energized by two series-opposing ideal batteries is measured to…

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Q: 4. It is desired to operate a 100-W, 120-V electric lamp at its current rating from a 240-V, 50 Hz…

A: The solution can be achieved as follows.

Q: A 2 KW, 230volt electric heater is needed to raise the temperature of a 10 lbs water for 30 minutes.…

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Q: A 28 V DC aircraft supply delivers a charge of 5 C to a window heater every second. What is the…

A: In this question,  Find the resistance of the heater if voltage V= 28V .  5C charge passing in every…

Q: (b) Typical replacement for a 100 W incandescent bulb is a 20 W LED bulb. The 20 W LED bulb provides…

A: First calculate energy  consumption by the incandescent bulb and LED bulb and than calculate cost…

Q: An electric heater having power rated 1000W connected to a 240V supply for 10minutes. a) calculate…

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Q: A PMMC instrument has internal resistance of 0.66 k2 and gives full scale deflection for 30 mA. The…

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Q: Select the false comment about the Alternating Current and Direct Current.   A Direct current is…

A: In this question we will find false statement about dc and ac currents...

Q: a. The potential difference across the terminals of a battery is 8.5 V when there is a current of…

A: Given that  V1=8.5VI1=3000 mAV2=11VI2=2000 mA Although formula for EMF of battery is given by…

Q: 11. An electric pencil sharpener rated 240-mW, 6-V is connected to a 9-V battery as shown. Calculate…

A: First we will find out current then we will find out resistance .

Q: Sketch a graph of the voltage vs time for a 10V DC voltage

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Q: Design an Ayrton shunt by indirect method to provide an ammeter with current ranges 6 A, 9 A, and 13…

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Q: A sample of wire (1 mm in diameter by 1 m in diameter) length) of an aluminum alloy (containing 1.2%…

A: Given: A wire of aluminium alloy is placed in electrical circuit such that its parameters are

Q: Which of the following statements about battery ratings is true? A. The ampere-hour rating is…

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Q: Explain, the use of power electronics in the following energy storage systems, use suitable…

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Q: The energy dissipated in a circuit is rated at 240 microJoules. If the supply voltage is given to be…

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Q: 56. A coil has 6,000 turns of wire and a resistance of 380 N. The coil is rewound with the same…

A: Given same weight with new arrangement which means same volume of material is used .  But volume =…

Q: Design a dc voltmeter by using direct method with d'Arsonval meter of 70 Q and full scale deflection…

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Q: Discuss briefly the importance of renewable energy

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Q: Q1: If PMMC meter have internal resistance of 2502 and half scale current of 5mA. Design an Ayrton…

A: PMMC METERRM=250IM(FULL SCALE CURRENT)=2×HALF SCALE CURRENTIM=2×5 = 10mA

Q: Q. For the circuit shown below, find the following 1. The name of this eircuit is

A: Since you have asked multiple questions, we will solve the first question for you. If youwant any…

Q: 9 am 30y LED From the circuit shown in the figure, what is the required resistance value and the…

A: We need to find out the value of resistor and power dissipation in resistor .

Q: Q1: What factors change the time constant? Q2 : If you increase the EMF of the used power supply ,…

A: In this question we need answer the following questions.

Q: 3.) An electric unit heater is to be designed with its coil made of nichrome wire, the resistivity…

A: Given that  P=1000 W V=220 Volt calculate resistance of electric heater P=V2RR=220×2201000R=48.4 ohm

Q: 4. Consider the problem of using a low-voltage system to power your little cabin. Suppose a 12-V…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: A resistance of 2/(t + 20) Ω and inductance of 4 H are connected in series to a battery of unknown…

A: Apply KVL in the loop to get differential equation in terms of time t . Now differential equation is…

Q: . Review. The heating element of an electric coffee maker operates at 120 V and carries a current of…

A: Given,  Voltage (V) = 120 V Current (I) = 2 A Mass of water (m) = 500 grams Initial temperature (T1)…

Q: Broadly speaking, what are the two main objectives of electrical systems?

A: To classify all the objectives of the electrical system as Obtain the information regarding the…

Q: Design an Ayrton shunt by indirect method to provide an ammeter with current ranges 1 A, 5 A, and 15…

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Q: 1) MULTIMETER, OSILOSCOPE, DC source, explain the purpose of use of these devices in experiments

A: In electrical engineering, there is more practical approach in laboratories to get more exposure to…

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A: Given Vin = 220 V AC, Vout = 6V DC, Rated Power = 24 W. Peak current = ?

Q: q25/a    Write the features of Air circuit breaker and mention its application.

A: The feature of Air circuit breaker is as follows: Air circuit breakers work with their contacts in…

Q: A single phase half-wave rectifier is connected to a 300V RMS 50Hz AC supply. If the rectifier is…

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Q: .) An incandescent lamp, rated at 100 watts, gives a certain amount of light when placed across the…

A: As per bartleby guideline for more than one question asked only first is to be answered please…

Q: I. GIVEN: DS1 LAMP 220 RMS

A: An AC ammeter reads RMS value of current flowing through it. The voltage source is given as 220V…

Q: Explain how Faraday’s law is utilized to generate alternating voltage in a power plant.

A: Resistors, inductors and capacitors form an integral part of any electrical circuit. A source,…

Q: Q7: How can you explain scientifically the generation of high voltages to feed the ignition plugs in…

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Q: For an electrical component, the formulas for charge and voltage are given below. A is 9 coulombs,…

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Q: 6. a. The potential difference across the terminals of a battery is 8.5 V when there is a current of…

A: Kirchhoff's voltage law: It states that in any closed circuit or loop, the total voltage around the…

Q: (d) Compute the current required to operate this 14 watt LED bulb from the 120 V 60 Hz power line…

A: We will find out current for both given power bulb with same voltage .

Q: 1) According to the figure given below: a) Determining the dc resistance at 2 mA. b) Determining the…

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Types of Thyristors

With four layers of alternating P- and N- materials, a thyristor is a solid-state semiconductor device. It acts as a type of bi-stable switch and it conducts when the gate receives a current trigger and continues to conduct until the voltage is reverse biased across the device or by some means until the voltage is removed. The silicon-controlled rectifier is considered synonymous with thyristors by some sources. Thyristors are defined as more complex by other sources as it contains at least four-layer of alternating N-type and P-type substrate. They find large applications in the control of electrical power supplies, electric motor speed control, and ranging of light dimmers because thyristors can control large amounts of power supplies and voltage with a small device. The circuit symbol of the thyristor is given below.