Electronics - Inductors

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"When ambition ends, happiness begins."

- (Proverb)

71.

The unit of flux density is:

72.

When used as a filter, an inductor is

A.	placed in series with the load and aids any current changes
B.	placed in parallel with the load and aids any current changes
C.	placed in parallel with the load and opposes any current changes
D.	placed in series with the load and opposes any current changes

73.

A loaded transformer will achieve mutual induction when:

A.	secondary current increase causes a primary current decrease
B.	primary current is increased by an increase in secondary current
C.	primary current is decreased by an increase in secondary current
D.	secondary current decrease causes a primary current increase

74.

Which transformer turns ratio is needed to match two 16-ohm parallel devices to an output of 22.2 ohms?

A.	1.38:1	B.	1.67:1
C.	0.72:1	D.	0.60:1

75.

A transformer will have:

A.	primary and secondary windings
B.	primary and secondary current
C.	primary wattage producing secondary current
D.	different frequencies for the primary and secondary

76.

What is the phase angle of a 24 V_ac parallel RL circuit when R = 45 ohms and X_L = 1100 ohms?

77.

A winding of wire can be called