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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

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

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AC Fundamentals, Circuit and Circuit Theory
The square waveform of current has following relation between r.m.s. value and average value.

None of these
r.m.s. value of current is greater than average value
r.m.s. value of current is less than average value
r.m.s. value is equal to average value

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AC Fundamentals, Circuit and Circuit Theory
The voltage of domestic supply is 220 V. This figure represents

Mean value
Peak value
Average value
R.m.s. value

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AC Fundamentals, Circuit and Circuit Theory
In a pure inductive circuit

The current can lead or lag by 90°
The current lags behind the voltage by 90°
The current leads the voltage by 90°
The current is in phase with the voltage

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AC Fundamentals, Circuit and Circuit Theory
In an A.C. circuit power is dissipated in

Resistance only
Capacitance only
Inductance only
None of the listed here

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

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

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