Exam 18: Series Alternating-Current Circuits

A series a.c. circuit has an inductive reactance of 60 ohms and a capacitive reactance of 20 ohms. The equivalent circuit has a reactance of __________ ohms, and a __________ phase angle

A 'leading' phase angle indicates a __________ load

The inductive reactance of a load is directly-proportional to

The impedance of an a.c. series R-L-C circuit is the __________ of the __________, __________, and the __________

The load current is in phase with the supply current for __________ loads

The voltage appearing across a series R-L circuit may be determined by applying __________ to the voltage-drops across the resistive and inductive components.

Series resonance will occur whenever a circuit's

The opposition to current offered by a purely-capacitive or a purely-inductive load is termed

The inductive reactance of a load is __________ the supply frequency

The capacitive reactance of a load is directly-proportional to

The capacitive reactance of a load is __________ the supply frequency

Phasors are said to 'rotate'

The phase angle of an a.c. circuit is defined as the 'angle by which the

Series resonance can only occur in a __________ a.c. circuit.

At series resonance, if the circuit's resistance is significantly lower than its reactance, then the voltage drops appearing across the reactive components

The load current leads the supply voltage by 90 degrees for __________ loads

The opposition to the drift of current in an inductive-reactive circuit is termed

The impedance of a load is the __________ sum of the load's resistance and reactance

The potential-difference across a capacitive-resistive circuit, divided by the load current, is termed

When series resonance occurs, the circuit's