Unit 24

Question 0

Circuit

Answer 0

an electricial path between two points

Question 1

Capacitance

Answer 1

an electrical size of a capacitor

Question 2

Reactance

Answer 2

the opposition to current flow in an AC circuit offered by a pure inductance or pure capacitance

Question 3

Capacitance reactance (XC)

Answer 3

the current-limiting property of a capacitor in an AC circuit

Question 4

Inductance (L)

Answer 4

property of a circuit that tends to any change of current.

Question 5

Resistance

Answer 5

the opposition to current flow in an AC or DC circuit.

Question 6

Apparent power (VA)

Answer 6

the valve found by multiplying the applied voltage by the total current of an AC circuit.
THIS IS NOT TRUE POWER and is not measured in watts.

Question 7

Capacitance (C)

Answer 7

the electrical size of a capacitor

Question 8

Quality (Q)

Answer 8

of a component. can be calculated by comparing the resistance to the reactance.

Question 9

Power Factor (PF)

Answer 9

a comparison of the true power (watts)

to the apparent power (volt-amperes)in an AC circuit.

Question 10

Reactive Power (VARs)

Answer 10

also called wattless power. calculated by multiplying reactive voltage by reactive current. Can be produced by inductance or capacitive loads.

Question 11

Resonant circuits

Answer 11

a circuit in which inductance reactance and capacitive reactance are equal.

Question 12

Resonance

Answer 12

The point at which circuit inductance and capacitance become equal

Question 13

Bandwidth is inversely proportional to

Answer 13

the Q of the components in the circuit.

Question 14

Bandwidth is determined by calculating the

Answer 14

upper and lower frequencies at which the current reaches a value of 0.707 of the maximum value.

Question 15

The rate the current increases is proportional

Answer 15

to the Q of the circuit components.

Question 16

LC resonant circuits increase

Answer 16

the current and voltage drop at the resonant

frequency.