a 100kVA, 1000/400 v single phase transformer when excited at rated voltage side draws a no-load of 3A at 0.5 lagging power factor. If it is excited from the low voltage side, determine the no-load current, and power input

Mahnoor randomly selects times to walk into a local restaurant and observe the type of music being played she found that the restaurant was playing country 11 times rock & roll 17 times and blues 8 times use the observed frequencies to create a probability model for the type of music the restaurant is playing the next time mahnoor walks in.