Few questions they asked
Where would I connect up a ballast on a fluorescent fitting to improve power factor - across L and N
Which 1 isn't a single phase motor - capicitor, slip ring motor, shadow phase motor, (can't remember other 1) wasn't sure of answer.
Work out inductors in series. - just add together
Name another smoke detector - ionisation.
Which battery charges - lithium ion
Ballast does what in fluorescent fitting - increase voltage during starting, decreases current on running, Improves Power factor? Not sure of answer
Transformer question - NP = 920, NS = 460, VP = 230 What is VS (115v)
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