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Modern Electrical Installation for Craft Students, 3rd Edition
book

Modern Electrical Installation for Craft Students, 3rd Edition

by Brian Scaddan
November 2013
Intermediate to advanced content levelIntermediate to advanced
182 pages
6h 6m
English
Newnes
Content preview from Modern Electrical Installation for Craft Students, 3rd Edition
Miscellaneous questions on Part I 161
to a 50 Hz supply. Calculate its capacitance.
126.
A capacitor of reactance 20
Ω
and a pure inductor of reactance 10
Ω
are connected in series across a 240 V supply. Calculate the current
taken from the supply.
127.
A capacitor of value 8 μ F is connected in parallel with a resistance
of 200
Ω
across a 240 V supply. Calculate the current taken by each
component, and by means of a phasor diagram, determine the
value of the supply current.
VOLUME 2, CHAPTER 3
128.
With the aid of diagrams, show how the power factor of an induct-
ive load such as a fluorescent lighting unit may be improved.
129.
Why is it desirabl ...
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Publisher Resources

ISBN: 9781483106205