Right Answer: The conductor may still show a voltage reading due to capacitive coupling or induction from nearby live conductors, even if it is disconnected.
Right Answer: Star connection (Y) has one end of each phase connected to a common point (neutral), while the other ends are connected to the supply. Delta connection (Δ) connects the end of each phase to the start of the next, forming a closed loop.
Star connection is used for starting motors and in low-power applications, providing higher voltage and lower current. Delta connection is used for high-power applications, allowing for higher current and lower voltage.
Neither is inherently "best"; the choice depends on the specific application requirements.
Right Answer: A leading power factor can cause voltage rise in the system, potentially leading to overvoltage conditions. For power transformers, it may result in increased losses and overheating. For diesel generators (D.G.), it can lead to instability and reduced efficiency, as they are typically designed to operate at a lagging power factor.
Ques:- Why three phase three wire system probably did'nt have neutral
Asked In :-
Right Answer: A three-phase three-wire system does not have a neutral because it is designed to balance the load across the three phases, allowing for efficient power distribution without the need for a neutral conductor.
Right Answer: Ma signal is used in control systems for its ability to provide feedback on the system's performance, allowing for adjustments to maintain desired output and stability.
Right Answer: The Large Hadron Collider (LHC) is the world's largest and most powerful particle accelerator, located at CERN near Geneva, Switzerland. It collides protons at high energies to study fundamental particles and forces, helping scientists explore the origins of mass, the existence of the Higgs boson, and other aspects of particle physics. The LHC consists of a 27-kilometer ring of superconducting magnets and detectors, allowing researchers to observe particle interactions at unprecedented energy levels.
Ques:- HOW TO FIND OUT 1. LINE CURRENT, 2. PHASE CURRENT IN AN ALTERNATOR / TRANSFORMER WHICH IS FEEDING A I)STAR LOAD ii) DELTA LOAD, USING A CLAMP METER. NORMALLY WHEN WE USE CLAMP METER IN A DG SET THEN WHAT DO WE GET?? PHASE CURRENT OR LINE CURRENT.
Right Answer: A capacitor and a condenser refer to the same electrical component used to store electrical energy, but "capacitor" is the modern term commonly used in electronics, while "condenser" is an older term that is less frequently used today.
Right Answer: The speed of electricity is approximately the speed of light, which is about 299,792 kilometers per second (or about 186,282 miles per second).
Ques:- What is skin type thermocouple?how it is installed?what is the difference b/w thermocouple & skin type thermocouple?what is gounded & non-grounded thermocoplle?what is the diff b/w these two?
Right Answer: A skin type thermocouple is a temperature sensor designed to measure surface temperatures by being mounted directly on the surface of an object. It is installed using adhesive or clamps to ensure good thermal contact with the surface.
The difference between a standard thermocouple and a skin type thermocouple is that the skin type is specifically designed for surface measurements, while standard thermocouples can be used for various applications, including immersion in liquids or gases.
Grounded thermocouples have their sensing junction connected to the metal sheath, allowing for faster response times and reduced electrical noise, but they can introduce ground loops. Non-grounded thermocouples have an insulated junction, which prevents electrical interference and ground loops, but may have slower response times.
