Explain the “Differential Protection Scheme” used for alternators with a neat labeled diagram.
Explain with a neat sketch the Pilot wire protection scheme applied to transmission line.
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....
Explain with neat sketch basic trip circuit of protection relaying.
Describe the operation of a current differential relay with a neat sketch.
Explain with a neat circuit diagram only the Scott connection scheme for the conversion of three-phase supply to two-phase supply. Name one application of the same.
Explain with a neat sketch the construction and working of Pelton turbine used in hydro power plant.
Explain the function of different parts of a typical nuclear power plant with a neat sketch.
With neat sketch explain four modes of operation of a TRIAC.
Explain the principle of operation of Doppler type ultrasonic flow meter with a neat labeled sketch.
Explain the working principle of transformer dimmers with the help of a neat sketch.
Explain the different types of DC motors with a neat sketch.
Explain the working of a drinking water cooler with a neat sketch.
Explain electric arc welding with a neat sketch.
Explain with neat sketch: (i) Earth resistance measurement using earth tester (ii) High resistance measurement using megger.
What is the necessity of synchroscope in power system? Explain with neat sketch the working of synchroscope.
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....
With the neat sketch explain working of Dynamometer type wattmeter.
With neat sketch of PMMC instrument explain its working briefly.
Explain the shackle type insulator with neat sketch.
With neat sketch, explain working of directional overcurrent relay.
Explain working of vertical break isolator with neat sketch.
Explain with a sketch protection of 3-phase induction motor during single phasing.
How does a current differential protection scheme work for parallel lines?
List two limitations of the Differential Protection scheme for transformers.
List four limitations of the differential protection scheme for transformers. Answer : Here are four limitations of the differential protection scheme for transformers: 1. **Sensitive to CT (Current Transformer) Mismatch**: Differential protection relies on accurate current ... features or settings, like harmonic filtering or inrush current detection, to function reliably....
State the possible location of mounting a projector in flood lighting with a neat sketch.
Describe the vapour compression refrigeration system with a neat sketch.
Describe the process of ultrasonic welding with a neat sketch and mention its applications.
Describe with neat sketch the constructional details of IGBT.
Describe with neat sketch the construction and working principle of MOSFET.
Describe with neat sketch the installation of plate earthing.
Describe with neat sketch any one type of earthing system.
Illustrate with neat sketch the working of automatic power factor corrector as an energy conservation device.
Describe with neat sketch the arc extinction in SF6 circuit breakers.
Describe with neat sketch working of hysteresis motor.
Describe with neat sketch the working of shaded pole induction motor.
With neat sketch state the working principle of Star-Delta starter.
Draw a neat sketch of Rotameter and explain its working principle.
What is the purpose of a negative sequence differential protection scheme in generator-transformer units?
How does a current differential protection scheme handle current transformer ratio mismatch?
How does a high impedance busbar differential protection scheme provide stability during external faults?
How does a current differential protection scheme handle parallel line mutual coupling?
How does a current differential protection scheme handle line charging current in cable feeders?
How does a high impedance differential protection scheme handle CT saturation?
What is the purpose of a negative sequence differential protection scheme in transformers?
How does a current differential protection scheme handle current transformer saturation?
How does a current differential protection scheme handle tapped loads?
How does a current differential protection scheme handle weak infeed conditions?
What is the purpose of a negative sequence differential protection scheme in generators? Answer : The purpose of a **negative sequence differential protection scheme** in generators is to detect and protect the generator from **unbalanced conditions** caused by faults, such as phase-to-phase faults ... of these faults, and ensures **safe operation** of the generator within the power system....
29.4k questions
5.3k answers
7.7k users