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Which of the following distribution systems is preferred for good efficiency and high economy ?
  • a)
    Single-phase, 2-wire system
  • b)
    2-phase, 3-wire system
  • c)
    3-phase, 3-wire system
  • d)
    3-phase, 4 -wire system
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Which of the following distribution systems is preferred for good effi...
Distribution systems for good efficiency and high economy

There are different types of distribution systems used in electrical engineering. Each system has its advantages and disadvantages. The preferred distribution system for good efficiency and high economy is the 3-phase, 4-wire system.

Advantages of 3-phase, 4-wire system

1. High efficiency: The 3-phase, 4-wire system provides high efficiency compared to other systems. It is because of the balanced load on the three phases, which reduces the losses in the system.

2. High economy: The 3-phase, 4-wire system is economical because it requires less amount of conductor material for the transmission of power.

3. High power transmission: The 3-phase, 4-wire system can transmit high power over long distances. It is because of the high voltage and low current used in the system.

4. Balanced load: The 3-phase, 4-wire system provides a balanced load on the three phases, which reduces the voltage drop and improves the power factor.

5. Reliable: The 3-phase, 4-wire system is reliable because it provides a backup in case of any fault in one of the phases.

Disadvantages of other systems

1. Single-phase, 2-wire system: It is suitable for small loads but not for high power transmission. It also has unbalanced load on the phase.

2. 2-phase, 3-wire system: It is not commonly used in the industry because it has unbalanced load on the phases.

3. 3-phase, 3-wire system: It is suitable for high power transmission but it cannot provide backup in case of any fault in one of the phases.

Conclusion

In conclusion, the 3-phase, 4-wire system is preferred for good efficiency and high economy. It provides a balanced load on the three phases, high power transmission, and reliability. Other systems have their advantages and disadvantages but are not suitable for high power transmission and economy.
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Which of the following distribution systems is preferred for good efficiency and high economy ?a)Single-phase, 2-wire systemb)2-phase, 3-wire systemc)3-phase, 3-wire systemd)3-phase, 4 -wire systemCorrect answer is option 'D'. Can you explain this answer?
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