115 Best Electrical Questions and Answers (Q&A) - ProProfs Discuss

Why did the circuit breaker fail to detect the short circuit/ overloading?

Joshuajjbell
Answered: Jul 15, 2020

All that matters is that the wire can handle the ampacity of the circuit breaker. It doesn't matter one bit how much larger the wire is than it needs to be. For overcurrent protection, if the...Read More

3 Answers

1263 views

What is the maximum torque angle of the relay if the phase angle of the voltage col of a directional relay is 50'?

Swiftdodgers
Answered: Jan 17, 2025

V Relay maximum torque. The maximum torque angle (MTA) is defined as the angle by which the current applied to the relay must be displaced from the voltage applied to the relay to produce maximum...Read More

1 Answer

909 views

What is reactance relay used to protect against?

H.Jennifer
Answered: Apr 23, 2018

The reactance relay is a fast relay. This relay comprises of two components an overcurrent component and a present voltage directional component. The present component created positive torque and...Read More

2 Answers

799 views

What is the full form of DR in the context of Smart Grids?

GIANTripura
Answered: Jan 17, 2025

Demand Response

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1 Answer

777 views

What is the end state of the electrolyte (liquid) when a 12V lead acid battery is discharged?

Bergeront Tiffney, Computer Engineer
Answered: May 01, 2019

Lead sulfate is the end state of electrolyte (liquid) when a 12v lead acid battery is discharged.
When a battery is being discharged, the sulfuric acid in the electrolyte is being depleted...Read More

3 Answers

645 views

What is the time of operation for 0.5 TMS If the time operation of a relay for unity TMS is 10 SEC?

Swiftdodgers
Answered: Jan 17, 2025

5

The operating time of an electrical relay mainly depends upon two factors : How long distance to be traveled by the moving parts of the relay for closing relay contacts and How...Read More

1 Answer

619 views

What is the difference between Neutral and Ground?

E. Barnes, Professional Gamer
Answered: Aug 22, 2019

Neutral is a unique type of connection from the transformer, to the substation and finally to different houses during electricity distribution. The neutral line is needed during power...Read More

1 Answer

523 views

What is the Sarbanes-Oxley Act of 2002 (SOX)? Also, why did it come out?

John Smith
Answered: Jan 17, 2025

Ii only-reference:sarbanes-oxley act; fasb 133 i is true, as noted in section 802, criminal penalties for altering documents, section 1519: destruction, alteration, or falsification of records in...Read More

2 Answers

469 views

What is the plug setting multiplier if the fault current is 2000 amps, the relay setting is 50% and the C.T. is 400/5?

Swiftdodgers
Answered: Jan 17, 2025

None of the above

2000 /( 400/5) x 0.5 = 12.5 amps since you cant go above the next standard size would be 10 amp. Another explanation is that they are asking for a multiplier not a amp...Read More

1 Answer

403 views

What types of relay takes longer to detect a fault that is further away along the line?

John Smith
Answered: Jan 17, 2025

Impedance relay

The major disadvantage of the distance relay is that the line faults in the last 10-20% of the line are always cleared from the far end after a time delay. This time delay...Read More

1 Answer

391 views

What is the basic function of transformer?

C. Perez, Writer
Answered: Jul 15, 2019

Transformers are essential devices for electrical systems. Their job is to move electric energy from one circuit to another. This is done through electromagnetism. Transformers will not change in...Read More

1 Answer

354 views

How about in installing the 4-way switch?

RAYMUNDO D. PACANA
Answered: Aug 10, 2018

This is just one of the details on how to perform installing lighting system in a table activity. This is given in a step by step procedure from the single line diagram, schematic...Read More

2 Answers

319 views

What does a plan show about electrical outlets? May be 2 answers

Morozco
Answered: Jan 17, 2025

Location
Type

1 Answer

300 views

What is the difference between Conductors and Insulators?

Chris Kenway, Content Writer
Answered: Mar 27, 2020

Conductors are substances that enable free electrons to flow through them quickly. This process transfers energy in the form of electricity as electrons move freely from atom to atom. Conductors...Read More

1 Answer

238 views

What is the difference between Contactor and Relay?

Denton Perez, Professor
Answered: Apr 14, 2020

One of the major differences between relays and contactors is that both are not used to handle the same kind of load; while the former is used mostly to handle loads with low voltage or current,...Read More

1 Answer

150 views

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