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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
For the same peak value which of the following wave will 'have the highest r.m.s. value?

Sine wave
Half wave rectified sine wave
Triangular wave
Square wave

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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

9 mA
4 mA
15 mA
5 mA

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AC Fundamentals, Circuit and Circuit Theory
The r.m.s. value of half wave rectified sine wave is 200 V. The r.m.s. value of full wave rectified AC. will be

111 V
100 V
282.8 V
141.4 V

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AC Fundamentals, Circuit and Circuit Theory
The equation of 50 Hz current sine wave having r.m.s. value of 60 A is

60 sin 25 t
84.84 sin 3141
60 sin 50 t
42.42 sin 314 t

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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°
60°
180°
30°

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AC Fundamentals, Circuit and Circuit Theory
Ohm is unit of all of the following except

Capacitance
Capacitive reactance
Inductive reactance
Resistance

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