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AC Fundamentals, Circuit and Circuit Theory

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

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

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AC Fundamentals, Circuit and Circuit Theory
All the rules and laws of D.C. circuit also apply to A.C. circuit containing

Capacitance only
Resistance only
Inductance only
All above

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AC Fundamentals, Circuit and Circuit Theory
The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of

Increase in temperature
Iron loss in core
Capacitive effect between adjacent coil turns
Skin effect

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

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

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AC Fundamentals, Circuit and Circuit Theory
In a series resonant circuit, the impedance of the circuit is

Zero
None of these
Minimum
Maximum

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AC Fundamentals, Circuit and Circuit Theory
Inductance of a coil Varies

Inversely as the length of the iron path
None of the listed here
Directly as the cross-sectional area of magnetic core
Both of the listed here

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