A transformer that increases voltage by having more turns on the secondary winding is called a ____ transformer.

Prepare for the Southeast Lineman Training Center Exam with quizzes and detailed explanations. Enhance your skills and knowledge through interactive tests. Get exam-ready!

Multiple Choice

A transformer that increases voltage by having more turns on the secondary winding is called a ____ transformer.

Explanation:
Voltage in a transformer is determined by the turns ratio. If the secondary winding has more turns than the primary, the output voltage rises above the input, which is the defining feature of a step-up transformer. The relationship is Vs = Vp × (Ns/Np); with Ns greater than Np, Vs exceeds Vp, and the current on the secondary is correspondingly lower so the overall power remains roughly the same (minus losses). Step-down transformers have fewer turns on the secondary, producing a lower voltage. An isolation transformer mainly provides electrical separation between windings with little or no change in voltage. An autotransformer uses a single winding with taps and can step voltage up or down depending on the tap configuration, not the simple two-winding step-up setup described here.

Voltage in a transformer is determined by the turns ratio. If the secondary winding has more turns than the primary, the output voltage rises above the input, which is the defining feature of a step-up transformer. The relationship is Vs = Vp × (Ns/Np); with Ns greater than Np, Vs exceeds Vp, and the current on the secondary is correspondingly lower so the overall power remains roughly the same (minus losses).

Step-down transformers have fewer turns on the secondary, producing a lower voltage. An isolation transformer mainly provides electrical separation between windings with little or no change in voltage. An autotransformer uses a single winding with taps and can step voltage up or down depending on the tap configuration, not the simple two-winding step-up setup described here.

More practice questions