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

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

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

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AC Fundamentals, Circuit and Circuit Theory
What will be the phase angle between two alternating waves of equal frequency, when one wave attains maximum value the other is at zero value?

45°
180°
90°
30°

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

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

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AC Fundamentals, Circuit and Circuit Theory
At very low frequencies a series R-C circuit behaves as almost purely

None of the listed here
Capacitive
Resistive
Inductive

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AC Fundamentals, Circuit and Circuit Theory
Inductance of coil

Increases with the increase in supply frequency
Becomes zero with the increase in supply frequency
Is unaffected by the supply frequency
Decreases with the increase in supply frequency

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