ELT 109 - UNIT 17

Two inductors are connected in parallel to a 120-V, 60-Hz supply. The values of the inductors are 0.15 H and 0.225 H. The total inductive reactance is _____.

3.54 A

Two inductors are connected in parallel to a 120-V, 60-Hz supply. The values of the inductors are 1.5 H and 2.5 H. The total inductive reactance is _____.

353.44 W

An inductor is connected to a 120-V, 60-Hz supply. The current in the circuit is 2.4 A. What is the inductive reactance?

50.00 ohms

Circuits are generally considered to contain _____ when any type of load that contains a coil is used.

inductance

An inductor has an inductive reactance of 64 ohms, and a wire resistance of 36 ohms. What is the impedance of the inductor?

73.4 ohms

The amount of resistance compared with the inductive reactance determines the _____ of the coil.

quality (Q)

The current-limiting property of an inductor is called _____.

reactance

Volt-amperes-reactive is used to measure the _____ in a pure inductive circuit.

reactive power

An inductor is connected to a 240-V, 60-Hz supply. The current in the circuit is 5 A. What is the inductance of the inductor?

.127 H

An inductor with an inductance of three henrys (H) is to be connected to a 60 Hz circuit. What will the inductive reactance be?

1131 ohms

Two inductors are connected in series to a 120-V, 60-Hz supply. The values of the inductors are 1.5 H and 2.5 H. The total inductive reactance is _____.

1508 W

An inductor has an inductive reactance of 12 ohms, and a wire resistance of 16 ohms. What is the impedance of the inductor?

20 ohms

Reactive power of an inductor has the symbol of _____.

VARS

The symbol for reactance is _____.

X

The unit of inductance is the _____.

henry (H)

The total current-limiting effect is called _____.

impedance

When a magnetic field continually changes magnitude and direction, a voltage is continually being induced in the coil. This voltage is called _____ voltage.

induced

The symbol XL stands for _____.

inductive reactance

An inductor is connected to a 60 Hz circuit. The inductive reactance is 75.4 ohms. What is the inductance of the inductor?

0.2 H

Two inductors are connected in series to a 120-V, 60-Hz supply. The values of the inductors are 0.175 H and 0.255 H. The total circuit current is _____.

0.74 A

In a pure inductive circuit, current _____.

lags voltage by 90°