Flashcards in NAVEDTRA 14181A, NEETS Mod. 9, Ch. 1 Deck (23)

Loading flashcards...

1

## What consists of a coil and a capacitor connected in series or parallel?

### Tuned circuit

2

## What phenomenon takes place whenever the characteristics of inductance and capacitance are found in a tuned circuit?

### Resonance

3

##
In an AC circuit, an inductor produces inductive reactance which causes the current to lag the voltage by how many degrees?

### 90

4

## What is the opposition a capacitor presents to AC called?

### Capacitive reactance

5

## What is the difference called between the individual reactances in a series circuit?

### Resultant reactance

6

## Resonant circuits may be designed as series resonant or what else?

### Parallel resonant

7

## What is the ability to discriminate between frequencies known as?

### Selectivity

8

## What is a parallel-LC circuit often called because it can store energy much as a tank stores liquid?

### Tank circuit

9

## What must a circuit have that is completed and has a voltage applied, but has zero current?

### Infinite impedance

10

## What is a direct and accurate measure of the quality of an LC circuit?

### Q

11

## What governs reactance at a given frequency?

### Inductance

12

## What refers to the fact that at resonance, the voltage drop across the reactances are greater than the applied voltage?

### Gain

13

## The range of frequencies included between the two frequencies at which the current drops to what percent of its maximum value at resonance is called the bandwidth of the circuit?

### 70

14

## How many general types can filter circuits be divided into?

### Four

15

## What is the electronic filter known as that can pass on the higher-frequency components to a load or to the next circuit?

### High-pass filter

16

## What passes on a majority of the low frequencies to the next circuit and rejects or attenuates the higher frequencies?

### Low-pass filter

17

## What is the ability of the filter circuit to distinguish between high and low frequencies and to eliminate or reject the unwanted frequencies known as?

### Discrimination

18

## What is the ability of the filter circuit to reduce the amplitude of the unwanted frequencies below the level of the desired output frequency known as?

### Attenuation

19

## What is the frequency at which the filter circuit changes from the point of rejecting the unwanted frequencies to the point of passing the desired frequency?

### Frequency cutoff

20

## The bandpass filter and the band-reject filter are two common types of filters that use which type of circuits?

### Resonant

21

## Which type of circuit is used to block the passage of current for a narrow band of frequencies, while allowing current to flow at all frequencies above or below this band?

### Band-reject filter

22

## What property of a circuit is the range of frequencies between the half-power points?

### Bandwidth

23