A Transformer

B. Identify appliances/equipment that require transformers.

All the appliances which are functioning or dependent to electricity has a transformer or required a transformer.

This are examples of appliances that requires appliances

C. Relate the voltage and current in the primary and secondary coils to the numbers of turn in each.

Hence the step-up transformer has a great loop in secondary coil, so in step-down transformer has a less amount of loop in a secondary coil. So the induce voltage of the step-up transformer is greater than the other. So as a whole if the secondary coil loops is increases the greater the induce voltage and the primary coil reduces its induce voltage with same as vise versa.

Step-up Transformer and Step-down Transformer

Step-up Transformer
In a step-up transformer the potential difference across the secondary coil is greater than the potential difference across the primary coil.
Step-Up Transformers are one of the really common and vital electrical tools used in power transmission and modification. They are usually the first major transformer in a transmission system and are often used in various forms throughout the system.

Step-Up Transformers are based on the same formulas that other transformers are, but the key element is that they convert voltages to higher volumes while reducing amperage and effects of resistance. This makes Step-Up Transformers ideal in long-distance power transmission use; by stepping up voltage and reducing amperage little energy is lost to resistance.





Step-down Transformer
Step down transformers are designed to reduce electrical voltage. Their primary voltage is greater than their secondary voltage. This kind of transformer "steps down" the voltage applied to it. For instance, a step down transformer is needed to use a 110v product in a country with a 220v supply.

Step down transformers convert electrical voltage from one level or phase configuration usually down to a lower level. They can include features for electrical isolation, power distribution, and control and instrumentation applications. Step down transformers typically rely on the principle of magnetic induction between coils to convert voltage and/or current levels.

Step down transformers are made from two or more coils of insulated wire wound around a core made of iron. When voltage is applied to one coil (frequently called the primary or input) it magnetizes the iron core, which induces a voltage in the other coil, (frequently called the secondary or output). The turns ratio of the two sets of windings determines the amount of voltage transformation.

The Doctor Who Discover the New Planet

Dr. Josette Biyo

Image Source: www.google.com

A planet was named after De. Josette Biyo, but she wants to be remembered as a teacher than as a scientist.

Dr. Biyo first taught in rural school for eight years. She faced the challenge of lack of facilities with her creative and innovate teaching style, which made complicated lesson easy to understand.

Her innovated teaching method in science research earned Dr. Biyo world wide recognition as she bested 4,000 teacher globally to win the Intel International Science and Engineering fair. She is first to receive an award for Excellence and Louisville, Kentucky, which honor teachers who inspire students to undertake research.

The Massachusetts Institute of Technology named a minor planet, "Planet Biyo," in her honor.

Dr. Biyo took up Biology in UP Visayas so she could become a doctor. But her father lacked the means to send her to a medical school. This did not prevent her to become one of the greatest teachers the Philippines is proud of.