Electrical Transformers

A transformer consists of

• Metal Core

• Metal core and coiled wire

• Metal core and polymer wire

• Polymer core and metal wire

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-5

Select the facts about transformer.

• Will not work with DC and AC

• Will not work with DC

• AC will produce change in magnetic field

• AC will induce current

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

The insulation at the transformer's core is meant for

• to avoid sharp edges.

• to avoid corrosion.

• to avoid electrical contact.

• to reduce power loss.

Primary loop is connected to the supply while secondary loop is connected to the load.

• True

• False

Step-up transformer is a transformer that increases...

• voltage.

• current.

• resistance.

• conductance.

A secondary coil of a transformer is supplied with voltage source, while the primary coil induces voltage (emf).

• True

• False

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is the function of the cylindrical object mounted to this utility pole?

•  to reduce electrical potential energy and a power line to near zero before current flows into the house

  
  

•  to increase or decrease voltage in a power line with little significant loss of energy

  
  

•  to generate electric power in the power line as the electric current flows throughout the device

  
  

•  to increase or decrease significantly both energy and voltage in a power line

  
  

Tags

NGSS.HS-ETS1-3

Three Transformers are labeled in the image. which statement can be true?

•  Transformers 2 and 3 will step up the voltage and Transformer one will step down the voltage 

  
  

•  Transformer one will step up the voltage and Transformers 2 and 3 will step down the voltage

  
  

•  Transformer 3 will step up the voltage and Transformers 1 and 2 will step down the voltage

  
  

•  Transformer 1 and 2 will step up the voltage, and Transformer 3 will step down the voltage

  
  

Tags

NGSS.HS-ETS1-3

NGSS.HS-PS2-5

An electric corporation opened a manufacturing facility in Crystal springs, mississippi, in 1956 to expand their power transformer product line. how would this impact a transfer of electrical energy?

•  producing more Transformers ensures there is equipment available for the purpose of generating more electricity

  
  

•  Transformers are used in substations to reduce the voltage in power lines so it can safely enter homes

  
  

•  it will allow power plants to convert mechanical energy into electrical energy more efficiently 

  
  

•  Transformers are used to reduce the voltage of electricity so it can be transmitted efficiently over long distances

  
  

The function of the transformer in the transmission of electricity is to

• increase the resistance.

• change the voltage.

• reduce the time to transmit the electricity.

• increase the power.