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Electrical Engineering

Explain the necessity of a starter for a DC motor. State various types of DC motor starters.

in Electrical Engineering

Explain the necessity of a starter for a DC motor. State various types of DC motor starters.

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in Electrical Engineering

State the necessity of synchroscope and with neat sketch explain its working.

State the necessity of synchroscope and with neat sketch explain its working.
Answer : ### Necessity of a Synchroscope A **synchroscope** is an important device used to measure and indicate the **synchronization** of the speed, frequency, and phase of an incoming alternator (generator) ... generator is in sync with the grid, and the circuit breaker can be closed to connect them....

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What are the various types of drawings used for electrical wiring? Explain in detail.

What are the various types of drawings used for electrical wiring? Explain in detail.

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Explain working of autotransformer starter for a 3 phase induction motor with neat diagram.

Explain working of autotransformer starter for a 3 phase induction motor with neat diagram.

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Draw the circuit for various types of DC motors.

Draw the circuit for various types of DC motors.

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State the various types of Biomass Resources.

State the various types of Biomass Resources.

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Explain the working principle of various types of single-phase induction motors with a neat circuit diagram.

Explain the working principle of various types of single-phase induction motors with a neat circuit diagram.

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in Electrical Engineering

What are 3-phase motor starters?

What are 3-phase motor starters?

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Describe various types of self-excited DC generators with their circuit layout.

Describe various types of self-excited DC generators with their circuit layout.

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State the selection criterion of the lamp for various purposes.

State the selection criterion of the lamp for various purposes.

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State the necessity of extension of Ammeter using shunt with mathematical derivation if necessary.

State the necessity of extension of Ammeter using shunt with mathematical derivation if necessary.
Answer : ### Necessity of Extension of Ammeter Using Shunt An **ammeter** is used to measure the current in a circuit. However, ammeters are designed to measure current in a specific range (typically ... a small, measurable fraction flows through the ammeter, thus making it safe to measure higher currents....

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in Electrical Engineering

State the necessity and construction of earth tester with suitable sketch.

State the necessity and construction of earth tester with suitable sketch.

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State the necessity of measurement necessity?

State the necessity of measurement necessity?

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State the necessity of instrument calibration.

State the necessity of instrument calibration.

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Explain various cases of phase angle for 2 wattmeter method.

Explain various cases of phase angle for 2 wattmeter method.

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in Electrical Engineering

Are starters AC or DC?

Are starters AC or DC?

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What is the working principle of DC motor starter?

What is the working principle of DC motor starter?
Answer : A **DC motor starter** is a device used to safely start and stop a DC motor. Its main function is to limit the initial inrush of current that flows when the motor is started. ... smoothly by controlling the voltage and current flow, thus preventing damage to the motor and the electrical system....

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Is self starter motor AC or DC?

Is self starter motor AC or DC?
Answer : A self-starter motor, typically found in vehicles, is a **DC motor** (direct current motor). The reason is that most vehicles (especially older ones) use a **DC motor** for the starter because it provides ... for the starter motor's function. So, in short, a self-starter motor is a **DC motor**....

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What is the necessity of synchroscope in power system? Explain with neat sketch the working of synchroscope.

What is the necessity of synchroscope in power system? Explain with neat sketch the working of synchroscope.

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State at least one function and the material used for the following parts of a DC motor.

State at least one function and the material used for the following parts of a DC motor.

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Draw neat diagram of star-delta starter for three phase induction motor.

Draw neat diagram of star-delta starter for three phase induction motor.

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Which starter is used for synchronous motor?

Which starter is used for synchronous motor?

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Explain with the help of a neat diagram the following methods of speed control for a DC series motor: (i) Field diverter method. (ii) Tapped field method.

Explain with the help of a neat diagram the following methods of speed control for a DC series motor: (i) Field diverter method. (ii) Tapped field method.

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in Electrical Engineering

State the various problems caused during the operation of large wind power generators.

State the various problems caused during the operation of large wind power generators.

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State the various lighting calculations methods and describe any one of them.

State the various lighting calculations methods and describe any one of them.
Answer : There are several methods used for lighting calculations, each suited for different types of lighting design. These methods are generally used to determine the amount of light needed in a given space, ... picture of light levels in specific areas compared to methods like the point-by-point method....

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in Electrical Engineering

State the various errors in single phase electronic energy meter.

State the various errors in single phase electronic energy meter.

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Define armature reaction in an alternator. Explain the effect of armature reaction at various power factors of loads of alternator.

Define armature reaction in an alternator. Explain the effect of armature reaction at various power factors of loads of alternator.

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Explain the various methods of the electrical wiring system.

Explain the various methods of the electrical wiring system.

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Explain various compressed air system components.

Explain various compressed air system components.

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Classify various electric heating methods and explain them briefly.

Classify various electric heating methods and explain them briefly.
Answer : Electric heating methods can be classified based on how they convert electrical energy into heat. Here are the main types: ### 1. **Resistive Heating (Joule Heating)** - **How it works:* ... method has its own set of applications based on factors like efficiency, speed, material type, and cost....

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What are the different types of electrical feeders and their applications in various building types?

What are the different types of electrical feeders and their applications in various building types?

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What are the different types of electrical insulators and their applications in various environments?

What are the different types of electrical insulators and their applications in various environments?
Answer : Electrical insulators are materials that prevent the flow of electric current and protect electrical systems by providing a barrier between conductive elements. They are essential in ... polymer insulators are favored for their lightweight properties and resistance to environmental degradation....

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Describe the main features of various types of generators and their suitability w.r.t wind power generation.

Describe the main features of various types of generators and their suitability w.r.t wind power generation.

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What are the applications of various types of three-phase transformers?

What are the applications of various types of three-phase transformers?

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List various losses occurring in synchronous motor.

List various losses occurring in synchronous motor.
Answer : In a synchronous motor, various types of losses occur during its operation. These losses are responsible for reducing the overall efficiency of the motor. Here's a breakdown of the different ... reduction in a synchronous motor, and reducing them is crucial for improving the motor's performance....

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in Electrical Engineering

State the function of strain gauge. Give its types and explain the working of any one type of it.

State the function of strain gauge. Give its types and explain the working of any one type of it.

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State the meaning of FACTS and explain in brief d-types facts controller.

State the meaning of FACTS and explain in brief d-types facts controller.
Answer : ### FACTS (Flexible AC Transmission Systems) **FACTS** stands for *Flexible AC Transmission Systems*. It refers to a collection of technology used in power systems to enhance the ... They do this by dynamically controlling the flow of reactive power and helping stabilize voltage levels....

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Explain the features of flexible AC transmission line (any four). State types of FACTS controller.

Explain the features of flexible AC transmission line (any four). State types of FACTS controller.

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State the purpose of lighting control. List different types of dimmers. Explain any two dimmers with suitable diagrams.

State the purpose of lighting control. List different types of dimmers. Explain any two dimmers with suitable diagrams.

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in Electrical Engineering

State the significant feature of soft starter.

State the significant feature of soft starter.

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With neat sketch state the working principle of Star-Delta starter.

With neat sketch state the working principle of Star-Delta starter.

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Explain hunting in synchronous motor. State its causes and effects.

Explain hunting in synchronous motor. State its causes and effects.

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What is the purpose of a soft starter in motor wiring?

What is the purpose of a soft starter in motor wiring?

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What is the rpm of a starter motor?

What is the rpm of a starter motor?

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What is a motor starter?

What is a motor starter?

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Why We Need to Install a Starter with a Motor?

Why We Need to Install a Starter with a Motor?

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How does a star-delta starter work in starting an induction motor?

How does a star-delta starter work in starting an induction motor?
Answer : A star-delta starter is commonly used to reduce the starting current and prevent damage to an induction motor during startup. Here's how it works in simple terms: ### 1. ** ... especially useful for motors with high starting currents, such as large motors used in industrial applications....

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How does a soft starter work in motor control?

How does a soft starter work in motor control?

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What are the advantages of star-delta starter with induction motor?

What are the advantages of star-delta starter with induction motor?
Answer : A **Star-Delta starter** is a method used to reduce the starting current of an induction motor. The motor is initially started in a star (Y) configuration, and after the motor reaches a ... , which helps protect both the motor and the electrical network while extending the lifespan of the motor....

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What is the working principle of starter motor?

What is the working principle of starter motor?
Answer : The starter motor is an essential component in a vehicle's electrical system. Its main job is to get the engine running. Here's how it works in simple terms: ### Working Principle of Starter ... engine starts, the starter motor stops working. Let me know if you need a more detailed explanation!...

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Why star delta starter is preferred with induction motor?

Why star delta starter is preferred with induction motor?

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