Question

Three star-connected coils are drawing line current of 30A from a three phase supply. Also, total...

Three star-connected coils are drawing line current of 30A from a three phase supply. Also, total apparent and active powers of 25kVA and 11 kW respectively are absorbed by the coils. By assuming that the each coil is characterized by equal impedance, determine:

i. the line and phase voltages

ii. the total reactive power (1 mark) iii. the impedance of each coil.

c) If the coils in Q2(b) are suddenly reconfigured into delta connection,

calculate the new line currents and total active power.

Engineering   Electrical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The line current of a three-phase engine in delta configuration is 25 A, connected to a...
The line current of a three-phase engine in delta configuration is 25 A, connected to a supply network with a line voltage of 240 V and absorbing a power of 15 kW. The efficiency of the engine is 90%. Taking as a reference of line voltages V1= V∠0º, and a direct sequence, find: a) The phasors of the line voltages b) The phasors of the line and phase currents c) The reactive and apparent power d) The mechanical power (at...
A 70.7 (line voltage) three phase star connected source is connected to a balanced delta load...
A 70.7 (line voltage) three phase star connected source is connected to a balanced delta load having impedance of 14.14 + j14.14 ohms for each phase. Assuming abc sequence, find a) Line currents b) Total 3 phase power
A Wye-Delta transformer is connected to a 66 kV input three-phase transmission line. Each transformer is...
A Wye-Delta transformer is connected to a 66 kV input three-phase transmission line. Each transformer is rated at 1000 kVA and has a step-down ratio of 8:1. The bank supplies a balance load having a power factor of 0.8 lag with a load current of 70 A. Assume ideal transformer, determine. The primary line and phase voltages The secondary line and phase voltages The secondary line and phase currents The apparent and active power at the load Total kVA capacity...
A balanced positive-sequence, Y-connected generator has an impedance of 0.3+j0.6 Ω/Φ, the terminal RMS voltage of...
A balanced positive-sequence, Y-connected generator has an impedance of 0.3+j0.6 Ω/Φ, the terminal RMS voltage of the source is 380V. The generator feeds a balanced, three-phase, Δ-connected load having an impedance of 27 + j42 Ω/Φ. The impedance of the line connecting the generator to the load is 0.6+j1.2 Ω/Φ. 1. Calculate the three line currents. 2. Calculate the line voltages at the terminals of the load. 3. Calculate the phase load currents. 4. Calculate the line voltage at the...
2. Three phase loads are in Y connection. Each load has a 20 Ω resistor and...
2. Three phase loads are in Y connection. Each load has a 20 Ω resistor and a 12 Ω reactor series. If the line voltage is 440 V, calculate the following: a. The total active power, reactive power, and apparent power supplied to the three-phase load. b. The voltage across each resistor.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT