Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

What is the definition of electrical engineering?Electrical engineering is a fundamental concept of mechanical physics and one of the most fundamental electrical interview questions that cover the study and application of electromagnetism and electricity in a variety of appliances. A.C. and D.C. are important concepts in electrical engineering. & D.C. Electric traction, current, transformers, and so on. What’s the difference between a capacitor, a resistor, and an inductor?Capacitor:A capac

What is the purpose of a lockout relay in high voltage?A lock-out relay is typically installed before or after the e-stop switch to allow electricity to be turned off from a single location. This relay is activated by a key lock switch and is powered by the same electrical source as the control power. Within the unit, the relay may contain up to 24 contact points. This enables the control power of several devices to be disabled with the flip of a single key switch. What is a reverse power relay

What effect does the overvoltage surge have on the electrical system?Over-voltage in the power system causes insulation failure in the equipment. It causes the line insulation to flash over and may potentially harm the surrounding transformer, generator, and other line-connected equipment. What does crawl in an induction motor mean?Induction motors, particularly squirrel cage induction motors, can occasionally run stably at speeds as low as one-seventh of their synchronous speed Ns. This phenom

What is the difference between Fuse and Breaker?A fuse contains a wire that melts when exposed to the heat of a short circuit or high current, therefore interrupting the circuit. You must replace it once it has melted.A circuit breaker cuts off the current without melting (for example, a pair of metal sheets having differing thermal expansion coefficients) and can be reset. What is aCircuit?Connections to the incoming wires are made inside the panel. These connections are then used to provide p

Define Electrical Engineering?Electrical engineering is the branch of engineering that studies and applies electricity, electronics, and electromagnetism. Explain Quality Assurance Engineering.QA Engineering assists various software development teams with responsibilities such as application creation, application testing, implementation, and debugging, essentially being involved in the development process from start to finish. How can you tell a circuit is inductive, capacitive, or merely resis

Define Substation?A substation is a switching, transforming, or converting station located between the generating station and the low tension distribution network, typically near the consumer’s load center. Name the types of substation? Indoor substation Outdoor substation Pole mounted substation Underground substation. Define Indoor Substation?The indoor Substation is one in which the equipment is located indoors for voltages up to 11kV due to cost considerations. In the event of a contaminate

1). What is Power System?The Power system is a system that is made up of the components that are used in the Distribution, Generation, and Transmission systems. The power system serves to create electrical energy by using coal and diesel as inputs. The system is equipped with components such as a Motor, Circuit breaker, Synchronous generator, Transformer, and Conductor, among other things.2). What is meant byP-V curves? P is an abbreviation for pressure, V is an abbreviation for volumein the P-V

1). What is the use of the negative phase sequence relay?The negative sequence relays protect generators and motors from imbalanced loading that might result from phase-to-phase faults.2). What is the differential relay’s operating principle?The phasor difference of two (or)more similar electrical variables needs to exceed a specific threshold for a differential relay to activate.3). Why is distance protection selected as primary protection for thetransmission lines over overcurrent protection?F

1). What is an AVO meter?AVO Meter – Ampere, Volt and Ohm MeterAVO meter is a meter that is used to measure the electrical circuit & the values of current, voltage, and resistance.2). What is Bridge Megger? What is its application?Bridge Meggers are used to accurately measure the lowest value of resistances, as well as the motor winding resistance & transformer winding resistance during preventative maintenance.Each of the 3 windings should have the same amount of winding resistance.3).

1). What is an inverse time over current relay’s characterizing feature?The length of time that the relay operates will be reduced as the fault current increases.2). Mention the most important characteristics of relay contacts. A strong construction is required. Self-cleaning (oxides break-down quickly). Corrosion- resistantis a characteristic. Low contact resistance with no strictures and no bounces. Capable of transporting rated short-term current and also rated continuous current.3). Define p