A) A single-phase, 50Hz, 100kVA, 2400/240V transformer has no-load current of 0.64A and core loss of 700 W, when its high voltage (HV) side is energized at rated voltage and
frequency. (i) Calculate the two components of the no-load current. (ii) If this transformer
supplies a load current of 40A at 0.8 lagging p. f. on its low voltage side, determine the
primary current and its power factor. Ignore the resistance and leakage reactance drops
for the transformer.

During physical science, ms. greene challenged her students to produce an energy transformation. james and jill wrapped a 4-inch nail with a coil of fifty turns of wire. they connected one end of the coil to one terminal of a knife switch. they connected the other terminal of the knife switch to the battery. finally, they connected the end of the coil to the other terminal of the battery. james held the tip of a 1-inch nail near the flat end of the 4-inch nail. jill closed the knife switch quickly and then opened it. the 1-inch nail was pulled toward the 4-inch nail. what is the best explanation of why the nail moved? a) electrical energy was converted to mechanical energy in the 1-inch nail. b) the 4-inch nail became an electromagnet and the magnetic force attracted the 1-inch nail. c) the electric current in the 4-inch nail was converted to mechanical energy in the 1-inch nail. d) the 4-inch nail had a positive charge and the 1-inch nail had a negative charge. opposites attracted.

What are igneous intrusions and extrusions

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.