1.a. Separate voltage-regulating units provide voltage-ratio control under load by A. causing different impedance drops in each phase. B. combining voltages from different phases. C. having series transformers in phase with the line-to-neutral voltage. D. exciting transformers having their primaries delta-connected. 1.b. A reactor is sometimes used with an autotransformer to A. limit short-circuit current. B. increase the full-load current. C. provide increased internal impedance. D. decrease the voltage ratio.

Q: If the supply frequency of the transformer increases, the secondary output voltage of a transformer.…

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Q: 9. In the design of current transformers, compensation for ratio errors is accomplished by using A.…

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Q: 4. When supplied at 230 V, 50 Hz, a transformer's no-load current is 5.0 A at 0.3 power factor. The…

A: Transformer is a static device which is used to step up/down the voltage/Current level. It is also…

Q: 4. The core loss of the single phase 2200/220-V, 50-Hz transformer is measured using the low-…

A: It is given that:ϕ=cos-10.1ϕ=84.16° voltmeter reading=240 VExciting current=1  AWattmeter reading=24…

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.