AC Fundamentals, Circuit and Circuit Theory
The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that

Both waves must have zero value at the same time
Both waves must have identical peak values
Both waves must have same frequency
None of the listed here

ANSWER DOWNLOAD EXAMIANS APP

AC Fundamentals, Circuit and Circuit Theory
The series and parallel resonance on L-C circuit' differs in that

Parallel resonance needs a low-resistance source for a sharp rise in line current
Parallel resonance needs a low-resistance source for a sharp increase in impedance
Series resonance needs a high-resistance source for sharp increase in current
Series resistance needs a low-resistance source for sharp rise in current

ANSWER DOWNLOAD EXAMIANS APP