A 200-kVA, 16000/554-V distribution transformer has the following resistances and reactances: The excitation branch impedances are given referred to the high-voltage side of the

transformer.

i Find the equivalent circuit of this transformer referred to the low-voltage side.

ii Find the per-unit equivalent circuit of this transformer

iii Assume that this transformer is supplying rated load at 554 V and 0.85 PF lagging. What is this transformer’s input voltage? What is its voltage regulation?

iv What are the copper losses and core losses in this transformer under the conditions of part (iii)?

v What is the transformer’s efficiency under the conditions of part (iii)?​

Aforce of 9.00 newtons acts at an angle of 19.0 to the horizontal. what is its component in the horizontal direction?

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?