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1.
The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes __________ ohms.
2.
Time constant of a circuit is the time in seconds taken after the application of voltage to each
3.
Magnitude of current at resonance in R-L-C circuit
4.
Inductance of a coil Varies
5.
Two waves of the same frequency have opposite phase when the phase angle between them is
6.
When an alternating current passes through an ohmic resistance the electrical power converted into heat is
7.
The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of ________ degrees.
8.
The purpose of a parallel circuit resonance is to magnify
9.
The safest value of current the human body can carry for more than 3 second is
10.
In a highly capacitive circuit the