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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
In AC. circuits, laminated iron is invariably used in order to

Reduce circuit permeability
Reduce eddy current loss
Increase heat radiation
Make assembly cheap and easier

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AC Fundamentals, Circuit and Circuit Theory
Power factor of an inductive circuit is usually improved by connecting capacitor to it in

Both parallel and series
None of the listed here
Series
Parallel

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AC Fundamentals, Circuit and Circuit Theory
The r.m.s. value of half wave rectified sine wave is 200 V. The r.m.s. value of full wave rectified AC. will be

100 V
111 V
282.8 V
141.4 V

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AC Fundamentals, Circuit and Circuit Theory
In a sine wave the slope is constant

Between 180° and 270°
Between 90° and 180°
No where
Between 0° and 90°

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AC Fundamentals, Circuit and Circuit Theory
Form factor for a sine wave is

1.11
0.707
0.637
1.414

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AC Fundamentals, Circuit and Circuit Theory
A heater is rated as 230 V, 10 kW, A.C. The value 230 V refers to

Average voltage
R.m.s. voltage
None of the listed here
Peak voltage

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