Chapter Test 3 and 4

Question 1

How many flip flops are required to divide a signal frequency by 4?

Answer 1

2.

Question 2

Which transistor region is very thin and lightly doped?

Answer 2

The base region.

Question 3

Passes high frequencies and attenuates low frequencies.

Answer 3

High pass filter.

Question 4

The output frequency is determined by the resonant frequency of the piezoelectric crystal in the oscillator:

Answer 4

Crystal-controlled oscillator.

Question 5

Numbers on the horizontal axis are called?

Answer 5

Real numbers.

Question 6

A pure semiconductor is often referred to as?

Answer 6

Intrinsic semiconductor.

Question 7

What are the three types of materials used in electronics?

Answer 7

Conductors, Semi-Conductors, Insulators.

Question 8

Synchronous bistable storage devices capable of storing one bit.

Answer 8

Flip flops.

Question 9

“B” in hexadecimal is what number in decimal?

Answer 9

11.

Question 10

This type of lead-acid battery is more powerful and require less maintenance than the old style. There is also no need to add water for this type. What type is being considered?

Answer 10

Sealed cell.

Question 11

(1110) is binary for which number?

Answer 11

14.

Question 12

Describes the behavior of a logic gate:

Answer 12

Truth table.

Question 13

What is the approximate operating current of a light emitting diode?

Answer 13

20 mA.

Question 14

Digital circuit with three inputs for carry in and two bits with sum and carry outputs.

Answer 14

Full-adder.

Question 15

An adaptable amplifier with inverting and non-inverting inputs featuring high input and low output impedance, and very high gain.

Answer 15

Operational amplifier.

Question 16

The region of a bipolar transistor that receives the flow of current carriers.

Answer 16

Collector.

Question 17

Any HIGH in will output a LOW, all LOW’s in will cause a HIGH.

Answer 17

NOR Gate.

Question 18

A semiconductor condition of operation in which a high-resistance state exists.

Answer 18

Reverse bias.

Question 19

Combinational logic block selects one of X inputs and directs the information to a single output.

Answer 19

Multiplexer.

Question 20

This is between two conductors an could cause output signal amplitude to decrease. It is normally not a problem in audio amplifiers. Usually exists between circuit components and wiring.

Answer 20

Stray capacitance.

Question 21

Which of the following is not one of the components that cause low frequency gain loss in a cascade amplifier?

Answer 21

Oscillators.

Question 22

Cells are connected in series to:

Answer 22

Increase the voltage output.

Question 23

Basic sequential logic device having two stable states. Can serve as a memory device.

Answer 23

Flip-flop.

Question 24

A logic device that translates from decimal to another code such as binary.

Answer 24

Decoder.

Question 25

What type of wave is made up of sine waves of the fundamental frequency and all the odd harmonics?

Answer 25

Square wave.

Question 26

What causes a squelch circuit to function?

Answer 26

Presence of noise.

Question 27

For a silicon diode, the barrier potential is approximately.

Answer 27

7V.

Question 28

Which of the following cells is not a primary cell?

Answer 28

Lead-acid.

Question 29

During band-reject filter operation the series components do what?

Answer 29

Pass all frequencies above and below the cut off frequencies.

Question 30

This type of oscillator uses two components, an inductor and capacitor, which when charged operates at resonance which produces the carrier frequency that is used for the radio transmitter.

Answer 30

LC Oscillator.

Question 31

Thyristors are used extensively in.

Answer 31

High-power switching applications.

Question 32

A solid state amplifying or controlling device which commonly has three leads.

Answer 32

Transistor.

Question 33

When the collector current in a transistor is zero, the transistor is?

Answer 33

Cut off.

Question 34

To lengthen an antenna electrically, add a:

Answer 34

Coil.

Question 35

Which of the following is not a configuration for filters?

Answer 35

I.

Question 36

What is the range of voltage ratings available in Zener diodes.

Answer 36

2.4 volts to 200 volts and above.

Question 37

(0111) is binary for which number?

Answer 37

7.

Question 38

What is the biggest disadvantage of the common-base amplifier?

Answer 38

Its low input impedance.

Question 39

Special solid state device used to increase the drive current at the output.

Answer 39

Buffer.

Question 40

Electronic components such as diodes and transistors that can rectify or amplify.

Answer 40

Active components.

Question 41

This type of battery has the electrodes welded together and has been developed with a high degree of efficiency and dependability.

Answer 41

Nickel-cadmium cell.

Question 42

Any HIGH in will output a LOW, All LOW's will cause a HIGH.

Answer 42

NOR Gate.

Question 43

All HIGHs in will output a LOW, any LOW in will cause a HIGH output.

Answer 43

NAND Gate.

Question 44

The moveable arm of an attraction-type relay is called:

Answer 44

Armature.

Question 45

In a p-type semiconductor the majority current carriers are?

Answer 45

Holes.

Question 46

To forward-bias a diode:

Answer 46

The anode voltage must be positive with respect to its cathode.

Question 47

When used as a voltage regulator, a zener diode is normally?

Answer 47

Reverse-biased.

Question 48

A semiconductor device, commonly used in amplifier circuits or as a switch of electronic signals.

Answer 48

Transistor.

Question 49

In digital circuits, meaning that operations are not executed in step with the clock.

Answer 49

Asynchronous.

Question 50

In an RC low-pass filter, the output is taken across the?

Answer 50

Capacitor.

Question 51

Which of the following is not one of the three basic sections of a relay?

Answer 51

Magnetic.

Question 52

(1001) is binary for which number?

Answer 52

9.

Question 53

A bipolar junction transistor has?

Answer 53

Two p-n junctions.

Question 54

When adding or subtracting complex numbers, all numbers must be in?

Answer 54

Rectangular form.

Question 55

The region of a bipolar transistor that sends the current carriers to the collector.

Answer 55

Emitter.

Question 56

A good crystal band-pass filter for a single-sideband phone would be?

Answer 56

2.1 KHz.

Question 57

A logic device that translates from binary code to decimal.

Answer 57

Decoder.

Question 58

If you have no power to the primary circuit of your relay, which of the following would not be a possible solution for troubleshooting?

Answer 58

Make sure the spring is not broken.

Question 59

This type of coupling is used to amplify much higher frequencies. The gain resistor is replaced with an inductor.

Answer 59

LC coupling.

Question 60

On the schematic symbol of a pnp transistor.

Answer 60

The arrow points in on the emitter lead.

Question 61

The result of changing a waveshape so its amplitude is no longer proportional to the original amplitude.

Answer 61

Amplitude distortion.

Question 62

Characteristic of the crystal that changes mechanical energy into electrical energy and/or electrical energy into mechanical energy is?

Answer 62

Piezoelectric effect.

Question 63

If you have no power to the secondary circuit of your relay, which would not be a possible solution for troubleshooting?

Answer 63

Make sure the spring is not broken.

Question 64

How many bits are in one Byte?

Answer 64

8.

Question 65

Electronic component that does not amplify or rectify.

Answer 65

Passive component.

Question 66

The impedance of a series LC circuit at resonance is?

Answer 66

Minimum.

Question 67

The charging and recharging of an LC Oscillator is called?

Answer 67

Flywheel effect.

Question 68

The input stage of every op amp is a?

Answer 68

Differential amplifier.

Question 69

Digital circuit that will add two bits and output a sum and carry. Cannot handle carry inputs.

Answer 69

Half-adder.

Question 70

A fundamental binary storage device, sometimes called flip-flop?

Answer 70

Latch.

Question 71

Which region in a transistor is the most heavily doped?

Answer 71

The emitter region.

Question 72

This oscillator uses a physical piezoelectric crystal that produces the output frequency.

Answer 72

Crystal Oscillator.

Question 73

In a high-pass filter, the shunt component does what?

Answer 73

Attenuates all frequencies below the cut off.

Question 74

A semiconductor element used for transistors and diodes.

Answer 74

Germanium.

Question 75

An actuator which converts electrical energy into linear motion.

Answer 75

Solenoid.

Question 76

The current at resonance in a series LC circuit is?

Answer 76

Maximum.