Connection of voltage transformer and current transformer across line are respectively.
series and parallel
The question requires understanding the connection methods of voltage transformers (VTs) and current transformers (CTs) in an electrical circuit. Voltage transformers are connected in parallel, while current transformers are connected in series. Here's why:
- Voltage Transformers (VTs): VTs are used to measure the potential difference across two points in a circuit, hence they are connected in parallel. This allows the transformer to measure the full voltage without altering the circuit's original properties.
- Current Transformers (CTs): CTs are designed to measure the current flowing through a conductor. For accurate current measurement, they must be connected in series with the circuit. This ensures that all of the current flowing through the circuit also flows through the CT.
Given these principles, the correct option that describes these connections is "parallel and series."
Thus, the correct answer is: series and parallel.
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Which of the following options is true with respect to extending the range of a wattmeter using instrument transformers?
A 100 : 5 current transformer is used in conjunction with a 5 A ammeter. If the later reads 3.5 A, find the line current.
Up to a voltage of __________, Potential Transformers (PTs) are usually of dry type.
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