Chapter Test 3 and 4 Flashcards
How many flip flops are required to divide a signal frequency by 4?
2.
Which transistor region is very thin and lightly doped?
The base region.
Passes high frequencies and attenuates low frequencies.
High pass filter.
The output frequency is determined by the resonant frequency of the piezoelectric crystal in the oscillator:
Crystal-controlled oscillator.
Numbers on the horizontal axis are called?
Real numbers.
A pure semiconductor is often referred to as?
Intrinsic semiconductor.
What are the three types of materials used in electronics?
Conductors, Semi-Conductors, Insulators.
Synchronous bistable storage devices capable of storing one bit.
Flip flops.
“B” in hexadecimal is what number in decimal?
11.
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?
Sealed cell.
(1110) is binary for which number?
14.
Describes the behavior of a logic gate:
Truth table.
What is the approximate operating current of a light emitting diode?
20 mA.
Digital circuit with three inputs for carry in and two bits with sum and carry outputs.
Full-adder.
An adaptable amplifier with inverting and non-inverting inputs featuring high input and low output impedance, and very high gain.
Operational amplifier.
The region of a bipolar transistor that receives the flow of current carriers.
Collector.
Any HIGH in will output a LOW, all LOW’s in will cause a HIGH.
NOR Gate.
A semiconductor condition of operation in which a high-resistance state exists.
Reverse bias.
Combinational logic block selects one of X inputs and directs the information to a single output.
Multiplexer.
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.
Stray capacitance.
Which of the following is not one of the components that cause low frequency gain loss in a cascade amplifier?
Oscillators.
Cells are connected in series to:
Increase the voltage output.
Basic sequential logic device having two stable states. Can serve as a memory device.
Flip-flop.
A logic device that translates from decimal to another code such as binary.
Decoder.
What type of wave is made up of sine waves of the fundamental frequency and all the odd harmonics?
Square wave.
What causes a squelch circuit to function?
Presence of noise.
For a silicon diode, the barrier potential is approximately.
7V.
Which of the following cells is not a primary cell?
Lead-acid.
During band-reject filter operation the series components do what?
Pass all frequencies above and below the cut off frequencies.
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.
LC Oscillator.
Thyristors are used extensively in.
High-power switching applications.
A solid state amplifying or controlling device which commonly has three leads.
Transistor.
When the collector current in a transistor is zero, the transistor is?
Cut off.
To lengthen an antenna electrically, add a:
Coil.
Which of the following is not a configuration for filters?
I.
What is the range of voltage ratings available in Zener diodes.
2.4 volts to 200 volts and above.
(0111) is binary for which number?
7.
What is the biggest disadvantage of the common-base amplifier?
Its low input impedance.
Special solid state device used to increase the drive current at the output.
Buffer.
Electronic components such as diodes and transistors that can rectify or amplify.
Active components.
This type of battery has the electrodes welded together and has been developed with a high degree of efficiency and dependability.
Nickel-cadmium cell.
Any HIGH in will output a LOW, All LOW’s will cause a HIGH.
NOR Gate.
All HIGHs in will output a LOW, any LOW in will cause a HIGH output.
NAND Gate.
The moveable arm of an attraction-type relay is called:
Armature.
In a p-type semiconductor the majority current carriers are?
Holes.
To forward-bias a diode:
The anode voltage must be positive with respect to its cathode.
When used as a voltage regulator, a zener diode is normally?
Reverse-biased.
A semiconductor device, commonly used in amplifier circuits or as a switch of electronic signals.
Transistor.
In digital circuits, meaning that operations are not executed in step with the clock.
Asynchronous.
In an RC low-pass filter, the output is taken across the?
Capacitor.
Which of the following is not one of the three basic sections of a relay?
Magnetic.
(1001) is binary for which number?
9.
A bipolar junction transistor has?
Two p-n junctions.
When adding or subtracting complex numbers, all numbers must be in?
Rectangular form.
The region of a bipolar transistor that sends the current carriers to the collector.
Emitter.
A good crystal band-pass filter for a single-sideband phone would be?
2.1 KHz.
A logic device that translates from binary code to decimal.
Decoder.
If you have no power to the primary circuit of your relay, which of the following would not be a possible solution for troubleshooting?
Make sure the spring is not broken.
This type of coupling is used to amplify much higher frequencies. The gain resistor is replaced with an inductor.
LC coupling.
On the schematic symbol of a pnp transistor.
The arrow points in on the emitter lead.
The result of changing a waveshape so its amplitude is no longer proportional to the original amplitude.
Amplitude distortion.
Characteristic of the crystal that changes mechanical energy into electrical energy and/or electrical energy into mechanical energy is?
Piezoelectric effect.
If you have no power to the secondary circuit of your relay, which would not be a possible solution for troubleshooting?
Make sure the spring is not broken.
How many bits are in one Byte?
8.
Electronic component that does not amplify or rectify.
Passive component.
The impedance of a series LC circuit at resonance is?
Minimum.
The charging and recharging of an LC Oscillator is called?
Flywheel effect.
The input stage of every op amp is a?
Differential amplifier.
Digital circuit that will add two bits and output a sum and carry. Cannot handle carry inputs.
Half-adder.
A fundamental binary storage device, sometimes called flip-flop?
Latch.
Which region in a transistor is the most heavily doped?
The emitter region.
This oscillator uses a physical piezoelectric crystal that produces the output frequency.
Crystal Oscillator.
In a high-pass filter, the shunt component does what?
Attenuates all frequencies below the cut off.
A semiconductor element used for transistors and diodes.
Germanium.
An actuator which converts electrical energy into linear motion.
Solenoid.
The current at resonance in a series LC circuit is?
Maximum.
