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.
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 delta connected system.
Rectifier: Line commutated 1 phase and 3 phase half (semi) & fully controlled bridge converters
Why are transmission lines 3 phase?
What are 3-phase transmission lines?
What are 3 phase transmission lines?
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:
What is the rotor of a 3 phase motor?
What is the RPM of a 3 phase motor?
Draw a neat labelled diagram of 3-phase electronic energy meter.
Explain with the help of a neat diagram the working of a 3-phase autotransformer. Write any two applications.
Explain with a sketch protection of 3-phase induction motor during single phasing.
Explain working of autotransformer starter for a 3 phase induction motor with neat diagram.
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
State the principle of a 3-phase induction motor.
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) in the three phases can be expressed as sinusoidal functions, assuming a balanced system where the phases are 120° ... , these expressions show how the voltages in each phase are related in both magnitude and phase....
Derive the condition for maximum torque under running condition of a 3 phase induction motor.
Is BLDC a 3-phase?
Is a BLDC motor 3-phase?
Is a stepper motor 3 phase?
What is a 3-phase motor?
What is a 3-phase induction motor?
How many volts is a 3-phase?
Is a 3-phase transformer ac or DC?
Is a 3 phase transformer AC or DC?
What is a 3 phase transformer?
What is the relationship between the line voltage and the phase voltage in a delta connected load?
What is the relationship of line and phase voltages and currents in a delta connected system?
What is the relation between line and phase values in a star and delta connected system?
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
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.
What are 3 types of line used in drawing?
What are the three 3 characteristics of line?
What are the 3 most common line types?
Who invented 3 phase power?
What is the voltage of 3 phase?
How many types of 3-phase motors are there?
What are 3-phase induction motors used for?
What is the formula for 3-phase induction motor?
What is the principle of 3-phase induction motor?
Who invented the 3-phase motor?
How to calculate capacitor for 3 phase motor?
What is the principle of 3-phase?
Why is it called the 3-phase?
What is the basic 3 phase electrical theory?
What is the delta connection in 3 phase?
What is the connection of 3-phase motor star and delta?
What is the relation between power in 3 phase delta and star connected system?
How to find 3 phase power?
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