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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
The power consumed in a circuit element will be least when the phase difference between the current and voltage is

90°
180°
30°
60°

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AC Fundamentals, Circuit and Circuit Theory
The frequency of domestic power supply in India is

50 Hz
150 Hz
200 Hz
250 Hz

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AC Fundamentals, Circuit and Circuit Theory
The phosphors for which of the following pair are 180° out of phase for VL, VC and VR?

VC and VR
VC and VL
None of the listed here
VL and VR

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AC Fundamentals, Circuit and Circuit Theory
For a sine wave with peak value Emax ___________ the average value is

0.636 Emax
None of the listed here
0.434 Emax
0.707 Emax

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

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

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AC Fundamentals, Circuit and Circuit Theory
The safest value of current the human body can carry for more than 3 second is

5 mA
9 mA
4 mA
15 mA

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