Match the correct process/equipment that are related to the statements given below.

1) Sending electricity from the power station to the distribution center. a) Power transmission

2) The voltage of AC is increased without changing the power. b) Star connection

3) The neutral point is made by connecting three phase lines. c) Step-up transformer

1) Power transmission
2) Star connection
3) Step-up transformer

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1) Power transmission
2) Step-up transformer
3) Star connection

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1) Step-up transformer
2) Star connection
3) Power transmission

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1) Step-up transformer
3) Power transmission
2) Star connection

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Solution

The correct option is B
1) Power transmission
2) Step-up transformer
3) Star connection

The process of sending electricity to distant places through wires from power stations to different distribution center is called power transmission.
Star connection is mostly used in power transmission. The Star connection also has a neutral (orstar) point made by connecting three phase lines. In star connection, the line current is equal to phase current.
In a step-up transformer, the output (secondary) voltage is greater than its input (primary) voltage. The step-up transformer decreases the output current for keeping the input and output power of the system equal.

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Similar questions

Different stages of power transmission and distribution are given in the following chart:

Arrange the given terms in the above boxes in the correct order.

Power generator, Substation, Star connection, Power transformer, Distribution transformer, Household connection.

Which of the following is correctly matched?

Different stages of power production and transmission are given. Arrange them in the proper sequence.

a) Distribution transformer reduces the voltage from 11 kV to 220 V.
b) Voltage is reduced from 220 kV to 66 kV supply electricity to large-scale industries.
c) Turbine is rotated to operate the generator.
d) Transmission of electricity at the power stations starts at 220 kV.
e) Electricity is produced at 11 kV.
f) Domestic consumers get electricity.

Q. For a synchronous generator connected to an infinite bus through a transmission line, how are the change of voltage

(Δ V)

and the change of frequency

(Δ f)

Q. A system with two buses are connected through a lossless transmission line with reactance value X. Bus 1 has a voltage magnitude

V_{1} = 1.2 p u

and bus 2 has voltage of 1 pu. When bus 1 is sending reactive power to bus 2 of magnitude

Q_{12}

. The reactive power,

Q_{12}

magnitude is increased by 20% by varying bus 1 voltage, keeping bus 2 voltage fixed. Assuming there is no real power flow through the transmission line, the new value of voltage magnitude in pu of bus 1 will be _______.

Q. In the transmission of power the voltage of power generated at the generating stations is stepped up from

11

kV to

132

kV before it is transmitted. Why?

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1) Sending electricity from the power station to the distribution center.	a) Power transmission
2) The voltage of AC is increased without changing the power.	b) Star connection
3) The neutral point is made by connecting three phase lines.	c) Step-up transformer