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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
Average voltage
Peak voltage
None of the listed here

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AC Fundamentals, Circuit and Circuit Theory
Inductance of coil

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

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AC Fundamentals, Circuit and Circuit Theory
A sine wave has a frequency of 50 Hz. Its angular frequency is __________ radian/second.

100 n
25 JT
50 jt
5 n

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AC Fundamentals, Circuit and Circuit Theory
The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of ________ degrees.

45
30
60
90

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AC Fundamentals, Circuit and Circuit Theory
The form factor is the ratio of

Average value to r.m.s. value
None of these
r.m.s. value to average value
Peak value to r.m.s. value

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AC Fundamentals, Circuit and Circuit Theory
In a loss-free R-L-C circuit the transient current is

Non-oscillating
Square wave
Oscillating
Sinusoidal

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