A60-hz single-phase transformer with capacity of 150 kva has the following parameters: rp = 0.35 ω rs = 0.002 ω rc = 5.2 kω xp = 0.5 ω xs = 0.008 ω xm = 1.1 kω the primary transformer voltage is 2.8 kv and the secondary is 230 v. the transformer is connected to a variable load (0 to 300 kw) with a lagging power factor of 0.83 and a load voltage equal to the rated transformer secondary. determine: (a) the total input impedance of the transformer when the secondary is shorted; and (b) the input current, voltage, power and power factor at full load (150 kw). (c) plot the voltage regulation versus load, and determine the load that produces 5% regulation.

the answer is b

explanation:

c) up

hope this

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force