"The arc across the contacts of circuit breaker will re-strike, if the rate of rise of re-striking voltage is greater than the rate of rise of dielectric strength between the contacts? " O True False

Q: How does dielectric breakdown occurs?

A: Materials that do not allow electric current to flow through are called insulators. Glass, rubber,…

Q: f. If the upper sphere fell down on ground by accident, and its shape became irregular with having…

A: Any charged particle produces an electric field. This electric field is directed from the positive…

Q: If the resistors used for charging and discharging were the same, the charging and discharging…

A:

Q: Which Arc Extinction Method operates by increasing the Arc Resistance by lengthening the Arc? A. Low…

A:

Q: What Transient Voltage appears across the Circuit Breaker contacts at, or near Current Zero during…

A: Correct option is C) RESTRIKING VOLTAGE   As per the definition of restriking voltage  Restriking…

Q: Discuss the principles of operation of the following circuit breakers i) Oil circuit breaker ii)…

A: Operating principle of the following:- i) Oil circuit breaker: At the point when the oil circuit…

Q: The cathode of a device is generally marked, it is indicative of: a. The positive terminal of the…

A: The cathode of a device is generally marked.

Q: what is process leads to lowering the number of free electrons? what is The Townsend's Criterion why…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: The number of disc insulators used in a suspension insulator setup with string efficiency 80 %,…

A: In this question , we will find no of disc insulator used with given data..

Q: The protection against direct lightning strokes and high voltage steep waves is provided by a.…

A:

Q: What Transient Voltage appears across the Circuit Breaker contacts at, or near Current Zero during…

A:

Q: Question No.9. In Arc weldingcoated electrode provide any of these Tunctions except heat sourc…

A: The explanation is as follows.

Q: Explain the procedure involved to determine core loss and copper loss with neat diagrams (Scan and…

A: From the open circuit test in transformer, core loss is determined. From the short circuit test in…

Q: A 14/2 type NM copper used for a general lighting branch circuit Ampacity : Maximum fuse or circuit…

A: Circuit breaker:- Circuit breakers are used for safety purpose in electrical equipment. It is used…

Q: Explain what happens when a dielectric leakage occurs.

A: A dielectric material is an insulator and ideally shouldn't allow any current through it But…

Q: Can you please explain what is the purpose of SF6 gas inside teh generator circuit breaker.

A: Sulfur Hexafluoride (SF6 ) gas is used inside generator circuit breakers for its unique electrical…

Q: Define ohms law

A: According to the question we have to define ohm's law.

Q: how do i determine the creepage and cleareance distance for 150 kv high voltage insulator?

A:

Q: The charge across each capacitance when connected in a parallel connected capacitive circuit is…

A: In this question we need to choose a correct option.

Q: Which Arc Extinction Method operates by keeping the Arc Resistance low until the Current becomes…

A:

Q: A snubber circuit has snubber time constant (10 msec), voltage source (10 kV), discharge current of…

A: Given data, Time constant,τ= 10 msec Voltage source V = 10 KV = 10000 V Discharging current is,…

Q: f. If the lower sphere is replaced with a sharp needle, is the breakdown voltage going to be higher…

A: Here it is asking that if the lower sphere is replaced with a sharp needle then what will happen to…

Q: What does ohms law states?

A: Ohms law: It states that voltage across a conductor is directly proportional to the current flowing…

Q: The principle operation of LVDT is based on the variation of Select one a. Self inductance b.…

A: Right Answer option C.Mutual Inductance

Q: A transformer is operating at rated Voltage and Current and supplying a resistive load. With the…

A: The copper loss depends on the load resistance. When the load is increased, the copper load…

Q: The rated voltage of the circuit breaker is a. Average Phase to Phase Voltage b. RMS Phase to Phase…

A: The rated maximum voltage of the circuit breaker is the highest RMS voltage

Q: Cylindrical metallic parabolic trough solar thermal collectors. 1. Does not rotate. 2. It rotates…

A: Cylindrical metallic parabolic trough solar thermal collectors

Q: What are the two necessary conditions for a thyristor to begin conduction? and Once a thyristor…

A: Two necessary conditions for a thyristor to begin conduction is - Forward bias voltage applied…

Q: A snubber circuit has snubber time constant (10 msec), voltage source (10 kV), discharge current of…

A: When a switching device is in it's reverse recovery states, various charge carriers recombine. This…

Q: 2. 1 H F 100 cos 2r V 2H 1H 2Ω Given: t=2s k=? energy stored in the coupled inductors=? ele ele

A: Given here a magnetically coupled circuit and asked to 1)find the coupling co-efficient(k) 2) and…

Q: Explain Coriols meter in detail.

A: A Coriolis meter depends on the principle of movement mechanics. At the point when the process…

HVDC

HVDC stands for high voltage direct current in the electric power transmission system. The high voltage direct current system uses direct current (DC) for the transmission of electrical power through transmission lines in contrast with the alternating current that is the AC system. The HVDC is used to transmit bulk power point-to-point through long distances transmission lines. Power is rapidly transferred because the efficiency of transmission lines is greatly increased over long distances due to HVDC lines.