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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
The power is measured in terms of decibels in case of

Transformers
Auto transformers
Electronic equipment
Current transformers

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AC Fundamentals, Circuit and Circuit Theory
In an AC. circuit, a low value of kVAR compared with kW indicates

Maximum load current
Low efficiency
High power factor
Unity power factor

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AC Fundamentals, Circuit and Circuit Theory
Which of the following coil will have large resonant frequency?

A coil with low resistance
A coil with large distributed capacitance
A coil with large resistance
A coil with low distributed capacitance

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

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

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AC Fundamentals, Circuit and Circuit Theory
Which of the following statements pertains to resistors only?

Can act as energy storage devices
Oppose sudden changes in voltage
Connecting them in parallel increases the total value
Can dissipate considerable amount of power

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AC Fundamentals, Circuit and Circuit Theory
In the case of an unsymmetrical alternating current the average value must always be taken over

The quarter cycle
The whole cycle
Unsymmetrical part of the wave form
The half cycle

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