Ideal Transformer

An iron core with 600 𝑡𝑢𝑟𝑛. The flux changes from 525 to 500 𝑚𝑊𝑏 in 3 𝑠𝑒𝑐, what is the voltage induced?

• -10 v

• 5 v

• -5 v

• 10 v

The ratio of the primary voltage to that of the secondary one is equal to ...

• The number of turns of primary divided by that of secondary

• The number of turns of secondary divided by that of primary

The ratio of the primary current to that of the secondary one is equal to ...

• The number of turns of secondary divided by that of primary

• The number of turns of primary divided by that of secondary

The power factor is the angle between ...

• a) The primary voltage & current

• b) The secondary voltage & current

• c) The load voltage & current

• a) & b)

• b) & c)

The power factor is equal to ....

• sin (theta)

• cos (theta)

• tan (theta)