The physical limitations of the practical transformer may be brought together as an equivalent circuit model built around an ideal lossless transformer. There is one
transformer which has 800 primary turns and 350 secondary turns. The primary
and secondary resistances are 0.55 Ω and 0.3 Ω respectively and the
corresponding leakage reactance are 1.2 Ω and 0.06 Ω respectively. Draw the
equivalent circuit of this transformer and determine:
i) The equivalent resistance referred to the primary winding.
ii) The equivalent reactance referred to the primary winding.
iii) The equivalent impedance referred to the primary winding.
iv) The phase angle of the impedance.

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?

Acar travels 40m in 8 seconds find the car speed