Cap/Ind Practice

In a purely inductive circuit, the voltage _____ the current by 90°.

• leads
• lags

In a purely capacitive circuit, the voltage _____ the current by 90°.

• lags
• leads

The current limiting effect of an inductor is called _____, and is symbolized as _____.

• inductive reactance; X_L

• inductive reactance; L

• capacitive reactance; X_C

• capacitive reactance; C

The current limiting effect of an capacitor is called _____, and is symbolized as _____.

• capacitive reactance; X_C

• capacitive reactance; C

• inductive reactance; X_L

• inductive reactance; L

A capacitor will reach _____ percent of its maximum possible charge after five time constants of charge time.

• 99.3%

• 63.2%

• 86.4%

• 94.9%

According to Lenz's Law, the CEMF produced by a coil is _____-degrees out-of-phase with the supply EMF

• 180
• 90
• 270

What is the frequency of a circuit than has 120V applied to it, contains 15.92 mH of inductance, and draws 12A of current?

• 100 Hz
• 60 Hz
• 80 Hz
• 120 Hz

In a purely capacitive circuit, the capacitive reactance would _____ if the frequency was increased.

• decrease
• increase

What is the current in a 120V, 60 Hz circuit with 100 mH of inductance?

• 3.183 A
• 37.68 A
• 4.37 A
• 72 A

Determine the total inductance of a circuit containing a 250 mH inductor, a 100 mH inductor, and a 750 mH inductor, all connected in series.

• 1,100 mH
• 65.22 mH
• 2,456.7 mH
• 850 mH