Electrical Engineering

🔍

Google Login

🖊️Ask a Question

Electrical Engineering

Is a transmission line a 3 phase?

in Electrical Engineering

Is a transmission line a 3 phase?

Related questions

in Electrical Engineering

A 3 phase line of 4 km length delivers 4000 kW at a p.f of 0.8 lagging to a load the resistance and reactance per km of each conductor are 0.2 Ω and 0.5 Ω respectively if the voltage at the supply end is maintained at 11 kV. Calculate the received end voltage and efficiency of line.

A 3 phase line of 4 km length delivers 4000 kW at a p.f of 0.8 lagging to a load the resistance and reactance per km of each conductor are 0.2 Ω and 0.5 Ω respectively if the voltage at the supply end is maintained at 11 kV. Calculate the received end voltage and efficiency of line.
Answer : Let's break down the problem step by step and calculate the received end voltage and the efficiency of the line. ### Given Data: - Power delivered to the load, \( P = 4000 \, \text{kW} \) - Power factor, \( \text{p. ... voltage**: \( 10.43 \, \text{kV} \) - **Efficiency of the line**: \( 98.61\% \)...

0 like 0 dislike

5 views 1 answer

×

Full Screen Image

in Electrical Engineering

State the relationship between line voltage & phase voltage and line current & phase current in a 3-phase star connected system.

State the relationship between line voltage & phase voltage and line current & phase current in a 3-phase star connected system.
Answer : In a 3-phase star (wye) connected system, the relationship between line voltage, phase voltage, line current, and phase current can be summarized as follows: ### 1. **Line Voltage and ... and currents behave in a 3-phase system, especially when configuring systems for different types of loads....

0 like 0 dislike

9 views 1 answer

×

Full Screen Image

in Electrical Engineering

State the relationship between line voltage & phase voltage and line current & phase current in a 3-phase delta connected system.

State the relationship between line voltage & phase voltage and line current & phase current in a 3-phase delta connected system.

0 like 0 dislike

3 views 0 answers

×

Full Screen Image

in Electrical Engineering

Rectifier: Line commutated 1 phase and 3 phase half (semi) & fully controlled bridge converters

Rectifier: Line commutated 1 phase and 3 phase half (semi) & fully controlled bridge converters

0 like 0 dislike

2 views 0 answers

×

Full Screen Image

in Electrical Engineering

Why are transmission lines 3 phase?

Why are transmission lines 3 phase?

0 like 0 dislike

4 views 0 answers

×

Full Screen Image

in Electrical Engineering

What are 3-phase transmission lines?

What are 3-phase transmission lines?
Answer : A **3-phase transmission line** is a system used to transmit electrical power over long distances. It uses three conductors (wires) to carry current, with each conductor carrying a different ... power distribution. They ensure continuous power flow, which is critical for industries and power grids....

0 like 0 dislike

9 views 1 answer

×

Full Screen Image

in Electrical Engineering

What are 3 phase transmission lines?

What are 3 phase transmission lines?

0 like 0 dislike

3 views 0 answers

×

Full Screen Image

in Electrical Engineering

A 3-ph overhead line supported by 6 disc insulators, the potential across the unit is 11 KV. Assuming shunt capacitance between each Insulator and each metal link is of 1/5th of capacitance of insulator. Calculate:

A 3-ph overhead line supported by 6 disc insulators, the potential across the unit is 11 KV. Assuming shunt capacitance between each Insulator and each metal link is of 1/5th of capacitance of insulator. Calculate:

0 like 0 dislike

3 views 0 answers

×

Full Screen Image

in Electrical Engineering

What is the rotor of a 3 phase motor?

What is the rotor of a 3 phase motor?
Answer : The **rotor** of a 3-phase motor is the rotating part of the motor that interacts with the magnetic field created by the stator (the stationary part). In simple terms, it's the part of the ... due to the interaction with the magnetic field created by the stator, allowing the motor to do useful work....

0 like 0 dislike

3 views 1 answer

×

Full Screen Image

in Electrical Engineering

What is the RPM of a 3 phase motor?

What is the RPM of a 3 phase motor?
Answer : The RPM (Revolutions Per Minute) of a 3-phase motor depends on two key factors: 1. **The number of poles in the motor**: Motors come with different numbers of poles, such as 2, 4, 6, etc ... synchronous speed is calculated using the formula above, and the actual RPM will be a bit less due to slip....

0 like 0 dislike

3 views 1 answer

×

Full Screen Image

in Electrical Engineering

Draw a neat labelled diagram of 3-phase electronic energy meter.

Draw a neat labelled diagram of 3-phase electronic energy meter.

0 like 0 dislike

3 views 0 answers

×

Full Screen Image

in Electrical Engineering

Explain with the help of a neat diagram the working of a 3-phase autotransformer. Write any two applications.

Explain with the help of a neat diagram the working of a 3-phase autotransformer. Write any two applications.

0 like 0 dislike

4 views 0 answers

×

Full Screen Image

in Electrical Engineering

Explain with a sketch protection of 3-phase induction motor during single phasing.

Explain with a sketch protection of 3-phase induction motor during single phasing.
Answer : ### Protection of a 3-Phase Induction Motor During Single Phasing **Single Phasing** is a condition where one of the three phases (L1, L2, L3) of a 3-phase system fails or gets ... serious harm can occur. This protects the motor windings and ensures the motor runs safely under normal conditions....

0 like 0 dislike

9 views 1 answer

×

Full Screen Image

in Electrical Engineering

Explain working of autotransformer starter for a 3 phase induction motor with neat diagram.

Explain working of autotransformer starter for a 3 phase induction motor with neat diagram.

0 like 0 dislike

4 views 0 answers

×

Full Screen Image

in Electrical Engineering

The power input to a 500V 50Hz 6Pole 3 phase induction motor running at 975 rpm is 40 kW. The stator losses are 1kW and friction and windage losses are 2kW. Calculate: (i) Slip (ii) Rotor copper loss (iii) Shaft power (iv) Efficiency

The power input to a 500V 50Hz 6Pole 3 phase induction motor running at 975 rpm is 40 kW. The stator losses are 1kW and friction and windage losses are 2kW. Calculate: (i) Slip (ii) Rotor copper loss (iii) Shaft power (iv) Efficiency

0 like 0 dislike

5 views 0 answers

×

Full Screen Image

in Electrical Engineering

State the principle of a 3-phase induction motor.

State the principle of a 3-phase induction motor.
Answer : The principle of a 3-phase induction motor is based on the interaction between the rotating magnetic field produced by the 3-phase supply and the rotor of the motor. Here's how it ... rotor. This interaction between the two magnetic fields causes the rotor to rotate and produce mechanical motion....

0 like 0 dislike

7 views 1 answer

×

Full Screen Image

in Electrical Engineering

Write the expression for the instantaneous values of EMFs in a 3-phase circuit.

Write the expression for the instantaneous values of EMFs in a 3-phase circuit.
Answer : In a 3-phase circuit, the instantaneous values of the electromotive forces (EMFs) can be expressed as sinusoidal functions. Assuming a balanced three-phase system, the instantaneous values of the EMFs ... voltages are 120 degrees out of phase with each other, ensuring that the system is balanced....

0 like 0 dislike

6 views 1 answer

×

Full Screen Image

in Electrical Engineering

Derive the condition for maximum torque under running condition of a 3 phase induction motor.

Derive the condition for maximum torque under running condition of a 3 phase induction motor.

0 like 0 dislike

4 views 0 answers

×

Full Screen Image

in Electrical Engineering

Is BLDC a 3-phase?

Is BLDC a 3-phase?

0 like 0 dislike

6 views 0 answers

×

Full Screen Image

in Electrical Engineering

Is a BLDC motor 3-phase?

Is a BLDC motor 3-phase?

0 like 0 dislike

5 views 0 answers

×

Full Screen Image

in Electrical Engineering

Is a stepper motor 3 phase?

Is a stepper motor 3 phase?

0 like 0 dislike

4 views 0 answers

×

Full Screen Image

in Electrical Engineering

What is a 3-phase motor?

What is a 3-phase motor?
Answer : A **3-phase motor** is an electric motor that runs on a 3-phase electrical power supply. In a 3-phase system, three alternating currents (AC) are supplied, each with a phase ... phase motor provides a steady, efficient, and powerful rotation, making it suitable for many high-power applications....

0 like 0 dislike

10 views 1 answer

×

Full Screen Image

in Electrical Engineering

What is a 3-phase induction motor?

What is a 3-phase induction motor?

0 like 0 dislike

6 views 0 answers

×

Full Screen Image

in Electrical Engineering

How many volts is a 3-phase?

How many volts is a 3-phase?
Answer : In a 3-phase system, the voltage can vary depending on the region and the system type (whether it's a low voltage or high voltage system). However, the most common voltages are: 1. **Low ... exact voltage depends on your system, but these are the typical ranges you'll see in 3-phase systems....

0 like 0 dislike

10 views 1 answer

×

Full Screen Image

in Electrical Engineering

Is a 3-phase transformer ac or DC?

Is a 3-phase transformer ac or DC?

0 like 0 dislike

7 views 0 answers

×

Full Screen Image

in Electrical Engineering

Is a 3 phase transformer AC or DC?

Is a 3 phase transformer AC or DC?

0 like 0 dislike

5 views 0 answers

×

Full Screen Image

in Electrical Engineering

What is a 3 phase transformer?

What is a 3 phase transformer?

0 like 0 dislike

6 views 0 answers

×

Full Screen Image

in Electrical Engineering

What is the relationship between the line voltage and the phase voltage in a delta connected load?

What is the relationship between the line voltage and the phase voltage in a delta connected load?
Answer : In a delta-connected load, the relationship between the line voltage (\(V_L\)) and the phase voltage (\(V_\phi\)) is: \[ V_L = V_\phi \] ### Explanation: - **Line Voltage (\(V_L\))** is the ... line voltage is √3 times the phase voltage. So, in summary: - **Delta Connection**: \(V_L = V_\phi\)...

0 like 0 dislike

6 views 1 answer

×

Full Screen Image

in Electrical Engineering

What is the relationship of line and phase voltages and currents in a delta connected system?

What is the relationship of line and phase voltages and currents in a delta connected system?

0 like 0 dislike

5 views 0 answers

×

Full Screen Image

in Electrical Engineering

What is the relation between line and phase values in a star and delta connected system?

What is the relation between line and phase values in a star and delta connected system?

0 like 0 dislike

3 views 0 answers

×

Full Screen Image

in Electrical Engineering

Find the capacitance between the conductors of a single phase 10 Km long line. The diameter of each conductor is 1.213cm. The spacing between the conductors is 1.25m

Find the capacitance between the conductors of a single phase 10 Km long line. The diameter of each conductor is 1.213cm. The spacing between the conductors is 1.25m

0 like 0 dislike

2 views 0 answers

×

Full Screen Image

in Electrical Engineering

A three-phase transformer having a line voltage ratio of 0.4 kV/11kV is connected Star/Delta and protective transformers on the 0.4 kV side have a current ratio of 500/5. Calculate the ratio of the protective transformers on the 11 kV side. Draw a neat circuit diagram and indicate the given values at appropriate places.

A three-phase transformer having a line voltage ratio of 0.4 kV/11kV is connected Star/Delta and protective transformers on the 0.4 kV side have a current ratio of 500/5. Calculate the ratio of ... on the 11 kV side. Draw a neat circuit diagram and indicate the given values at appropriate places.

0 like 0 dislike

3 views 0 answers

×

Full Screen Image

in Electrical Engineering

What are 3 types of line used in drawing?

What are 3 types of line used in drawing?

0 like 0 dislike

6 views 0 answers

×

Full Screen Image

in Electrical Engineering

What are the three 3 characteristics of line?

What are the three 3 characteristics of line?

0 like 0 dislike

2 views 0 answers

×

Full Screen Image

in Electrical Engineering

What are the 3 most common line types?

What are the 3 most common line types?

0 like 0 dislike

2 views 0 answers

×

Full Screen Image

in Electrical Engineering

Who invented 3 phase power?

Who invented 3 phase power?

0 like 0 dislike

4 views 0 answers

×

Full Screen Image

in Electrical Engineering

What is the voltage of 3 phase?

What is the voltage of 3 phase?

0 like 0 dislike

6 views 0 answers

×

Full Screen Image

in Electrical Engineering

How many types of 3-phase motors are there?

How many types of 3-phase motors are there?
Answer : There are **mainly three types of 3-phase motors**, based on their construction and working principle. These are: --- ### **1. 3-Phase Induction Motor (Most Common)** These are the most widely used ... EVs | --- Let me know if you want diagrams or animations for better understanding!...

0 like 0 dislike

9 views 1 answer

×

Full Screen Image

in Electrical Engineering

What are 3-phase induction motors used for?

What are 3-phase induction motors used for?

0 like 0 dislike

4 views 0 answers

×

Full Screen Image

in Electrical Engineering

What is the formula for 3-phase induction motor?

What is the formula for 3-phase induction motor?
Answer : For a 3-phase induction motor, there are a few important formulas that relate to its performance. The key formulas are as follows: ### 1. **Synchronous Speed (Ns)** The synchronous ... Watts) These formulas are fundamental for understanding and analyzing the operation of 3-phase induction motors....

0 like 0 dislike

6 views 1 answer

×

Full Screen Image

in Electrical Engineering

What is the principle of 3-phase induction motor?

What is the principle of 3-phase induction motor?
Answer : The principle of a **3-phase induction motor** is based on the interaction between a rotating magnetic field and the current induced in the rotor. Here's a simplified explanation of how it works ... less than the synchronous speed, with the **slip** allowing the induction process to keep happening....

0 like 0 dislike

6 views 1 answer

×

Full Screen Image

in Electrical Engineering

Who invented the 3-phase motor?

Who invented the 3-phase motor?

0 like 0 dislike

3 views 0 answers

×

Full Screen Image

in Electrical Engineering

How to calculate capacitor for 3 phase motor?

How to calculate capacitor for 3 phase motor?
Answer : To calculate the capacitor size for a 3-phase motor, the goal is usually to improve the power factor or provide reactive power compensation for motors running at a lagging power factor. The exact size ... instability. Would you like to go through another example or need help with any of the steps?...

0 like 0 dislike

5 views 1 answer

×

Full Screen Image

in Electrical Engineering

What is the principle of 3-phase?

What is the principle of 3-phase?
Answer : The principle of **3-phase** electrical power is based on the idea of using three separate alternating currents (AC) that are all of the same frequency but **offset** from each ... flow of electrical power. This makes it ideal for industrial, commercial, and large-scale residential applications....

0 like 0 dislike

7 views 1 answer

×

Full Screen Image

in Electrical Engineering

Why is it called the 3-phase?

Why is it called the 3-phase?
Answer : The term "3-phase" refers to the type of electrical power system that uses three alternating currents (AC) that are offset from each other by 120 degrees. The "three" in "3-phase" ... individual waveforms or "phases" of AC power that work together to deliver stable and efficient electrical energy....

0 like 0 dislike

5 views 1 answer

×

Full Screen Image

in Electrical Engineering

What is the basic 3 phase electrical theory?

What is the basic 3 phase electrical theory?
Answer : The basic theory of 3-phase electrical systems revolves around the use of three separate alternating currents (AC) that are generated with the same frequency but are offset by 120 degrees ... of electrical power because they are more efficient, cost-effective, and provide constant power....

0 like 0 dislike

5 views 1 answer

×

Full Screen Image

in Electrical Engineering

What is the delta connection in 3 phase?

What is the delta connection in 3 phase?

0 like 0 dislike

4 views 0 answers

×

Full Screen Image

in Electrical Engineering

What is the connection of 3-phase motor star and delta?

What is the connection of 3-phase motor star and delta?

0 like 0 dislike

3 views 0 answers

×

Full Screen Image

in Electrical Engineering

What is the relation between power in 3 phase delta and star connected system?

What is the relation between power in 3 phase delta and star connected system?

0 like 0 dislike

4 views 0 answers

×

Full Screen Image

in Electrical Engineering

How to find 3 phase power?

How to find 3 phase power?

0 like 0 dislike

7 views 0 answers

×

Full Screen Image