Describe with neat sketch the installation of plate earthing.

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Describe with neat sketch any one type of earthing system.

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Describe with neat circuit diagram the measurement procedure of earth resistance for an installation.

Describe with neat circuit diagram the measurement procedure of earth resistance for an installation.
Answer : To measure the earth resistance for an installation, we typically use the **Wheatstone Bridge method** or the **Fall-of-Potential method**. However, one of the most common methods is the **Fall-of-Potential method** (also called the " ... | [P1]---->----[A]---(Earth Electrode)----[B]----...

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Describe with neat sketch the constructional details of IGBT.

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Describe with neat sketch the construction and working principle of MOSFET.

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Describe the operation of a current differential relay with a neat sketch.

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Describe with neat sketch working of hysteresis motor.

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Describe with neat sketch the working of shaded pole induction motor.

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Describe the process of ultrasonic welding with a neat sketch and mention its applications.

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Describe with neat sketch the arc extinction in SF6 circuit breakers.

Describe with neat sketch the arc extinction in SF6 circuit breakers.
Answer : **Arc Extinction in SF6 Circuit Breakers:** SF6 (Sulfur Hexafluoride) circuit breakers are widely used for switching high-voltage electrical circuits. They are known for their ability to extinguish the electric arc that forms when the breaker contacts ... ---+ +--------+ | |...

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Describe the vapour compression refrigeration system with a neat sketch.

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Describe with sketch the working of Variable frequency drive as an energy conservation device.

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Explain with a neat sketch the construction and working of Pelton turbine used in hydro power plant.

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Explain the function of different parts of a typical nuclear power plant with a neat sketch.

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

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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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With the neat sketch explain working of Dynamometer type wattmeter.

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With neat sketch of PMMC instrument explain its working briefly.

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With neat sketch explain four modes of operation of a TRIAC.

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Explain the principle of operation of Doppler type ultrasonic flow meter with a neat labeled sketch.

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Illustrate with neat sketch the working of automatic power factor corrector as an energy conservation device.

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With neat sketch, explain working of directional overcurrent relay.

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State the possible location of mounting a projector in flood lighting with a neat sketch.

State the possible location of mounting a projector in flood lighting with a neat sketch.
Answer : When mounting a projector for flood lighting, there are a few possible locations where the projector can be placed, depending on the desired lighting effect and area to be illuminated. Here ... important to consider the area, type of project, and specific requirements for your lighting installation....

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Explain the working principle of transformer dimmers with the help of a neat sketch.

Explain the working principle of transformer dimmers with the help of a neat sketch.
Answer : A **transformer dimmer** is an electronic device used to control the brightness of light bulbs or the power supplied to electrical appliances. The basic principle of a transformer dimmer involves ... - The dimmer adjusts the voltage delivered to the load, controlling the brightness of the light....

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Explain the different types of DC motors with a neat sketch.

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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.
Answer : ### Working Principle of Star-Delta Starter A **Star-Delta starter** is used to reduce the starting current and prevent damage to the motor when starting a 3-phase induction motor. The key ... All Motors**: This method is suitable for motors that are rated for such reduced starting conditions....

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Explain with neat sketch basic trip circuit of protection relaying.

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Explain working of vertical break isolator with neat sketch.

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Explain the working of a drinking water cooler with a neat sketch.

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Explain with neat sketch: (i) Earth resistance measurement using earth tester (ii) High resistance measurement using megger.

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Explain the shackle type insulator with neat sketch.

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Explain with a neat sketch the Pilot wire protection scheme applied to transmission line.

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Explain the differential protection scheme for busbars with a neat sketch.

Explain the differential protection scheme for busbars with a neat sketch.
Answer : **Differential Protection Scheme for Busbars:** Differential protection is a popular protection scheme used for busbars in electrical power systems to detect faults (such as short circuits) ... faults are quickly cleared, maintaining the overall stability and reliability of the power system....

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Explain with a neat sketch fault bus protection scheme.

Explain with a neat sketch fault bus protection scheme.
Answer : **Fault Bus Protection Scheme** A fault bus protection scheme is used to detect and isolate faults occurring on a busbar in electrical power systems. A busbar is a central connection ... widespread system disturbances and ensures continuity in the operation of other parts of the electrical network....

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Explain electric arc welding with a neat sketch.

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Describe the construction of an SF6 circuit breaker with a neat diagram.

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Describe the construction and operation of the Buchholz relay with a neat labeled diagram.

Describe the construction and operation of the Buchholz relay with a neat labeled diagram.
Answer : ### Buchholz Relay: Construction and Operation The **Buchholz relay** is a protective device used in **oil-immersed transformers** to detect faults such as **internal short circuits** or **overheating**. ... me know if you'd like more details or a specific part of the explanation to be clarified!...

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Describe the working of an HRC fuse with a neat diagram.

Describe the working of an HRC fuse with a neat diagram.
Answer : ### Working of an HRC Fuse: An **HRC (High Rupturing Capacity) fuse** is a type of fuse that is used for protecting electrical circuits from overcurrent conditions. It is designed ... is typically made of ceramic or similar heat-resistant materials to withstand high temperatures during the fault....

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Describe the working of synchronous reluctance motor with the help of neat diagram.

Describe the working of synchronous reluctance motor with the help of neat diagram.
Answer : ### Working of Synchronous Reluctance Motor (SynRM) A **Synchronous Reluctance Motor (SynRM)** is a type of electric motor that operates on the principle of reluctance, similar to a ... certain applications, though it does have some limitations in terms of starting torque and power density....

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Describe emergency lighting system with neat diagram.

Describe emergency lighting system with neat diagram.
Answer : ### Emergency Lighting System An **emergency lighting system** is designed to provide illumination in the event of a power failure or when the normal lighting system is not functioning. These ... buildings of all sizes, especially in places like schools, hospitals, hotels, and office buildings....

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Describe spot welding and projection welding with neat sketches.

Describe spot welding and projection welding with neat sketches.
Answer : ### Spot Welding **Spot welding** is a type of resistance welding used to join two or more metal sheets by applying heat and pressure to a small, localized area. It works ... processes are efficient for mass production and can be automated, especially in industries like automotive manufacturing....

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Explain the criteria to be applied in deciding the earthing system for an electrical installation.

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Draw a neat labeled sketch of a three-point starter.

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Draw a neat sketch of Rotameter and explain its working principle.

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Draw neat labeled sketch of gas turbine co-generation.

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Give the justification with diagram – “Earthing saves human life during Electrical faults”. State adverse effect of improper earthing system.

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What happened if the glass plate is replaced with a plane mirror?

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Compare orifice plate with Venturi tube with reference to: (i) Working principle (ii) Construction (iii) Cost (iv) Pressure loss.

Compare orifice plate with Venturi tube with reference to: (i) Working principle (ii) Construction (iii) Cost (iv) Pressure loss.
Answer : ### Comparison of Orifice Plate and Venturi Tube Both orifice plates and Venturi tubes are devices used to measure the flow rate of fluids in pipelines. Here's a comparison of the two based on various aspects ... loss**, and are willing to spend more, a **Venturi tube** would be more suitable....

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