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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
When an alternating current passes through an ohmic resistance the electrical power converted into heat is

None of the listed here
Apparent power
Active power
Reactive power

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AC Fundamentals, Circuit and Circuit Theory
A parallel AC. circuit in resonance will

Have current in each section equal to the line current
Have a high voltage developed across each inductive and capacitive section
Have a high impedance
Act like a resistor of low value

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AC Fundamentals, Circuit and Circuit Theory
The r.m.s. value of pure cosine function is

Same as peak value
Zero
0.707 of peak value
0.5 of peak value

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AC Fundamentals, Circuit and Circuit Theory
The purpose of a parallel circuit resonance is to magnify

Current
Frequency
Voltage
Power

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AC Fundamentals, Circuit and Circuit Theory
A pure inductance connected across 250 V, 50 Hz supply consumes 100 W. This consumption can be attributed to

The statement given is false
The current flowing in the inductor
The reactance of the inductor
The big size of the inductor

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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.

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

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