3e031 set A Vol 1 self test questions
How do spectrum analyzers display signals
as a function or frequency
For the negative alternation of the input signal, the collector voltage varies at the same rate as the input. what does this produce in a common base amplifier
An amplified negative alternation
What is used to provide the DC voltage in a three-phase alternator
An exciter
What components make up an L-type filter
An inductor and a capacitor.
How much inverse voltage must each diode withstand in a full-wave rectifier?
An inverse voltage twice the value of the output peak voltage
Is the p-type material of a diode the anode or cathode?
Anode
Describe matter
Any substance that has weight and takes up space
Name three factors that affect resistance
Any three of these: length, size, material, and temperature.
What are the two methods of making a SCR
Apply a positive pulse to the gate electrode and (b) exceed forward breakover potential between the cathode and the anode.
What are the elements that form molecules
Atoms
Who certifies work to be done on live lines
BCE or designated alternate.
Who is responsible for providing IBR management support
Base communications officer
Why are bridge rectifiers and full-wave rectifiers considered full-wave devices?
Because current flows through the load resistor during both alternations of the input signal
Why is the output voltage across the load resistor high in the L-type capacitive input filter circuit?
Because the capacitor charges to the peak value of the L-type filter
Why does ripple voltage exist
Because the rectifier supplies energy to the load in pulses
What is the common characteristics of the tow types of Pi-type filters
Both of them have two capacitors to ground
What causes voltage to be induced in a transformer
Buildup and collapse of the current
How are most integrated circuits produced
By a batch-fabrication method.
If you apply an AC signal to the anode, how can you make and SCR conduct during any portion of the positive alternation
By applying a portion of that positive signal to the gate
How can you strengthen the magnetic lines of force around a conductor
By forming a number of loops close together
How can you provide a smoother, more constant value for a simplified electronic voltage regulator
By incorporating two class A amplifiers and a voltage divider network
How can you change the output voltage of the electronic voltage regulator
By moving the arm of the output voltage adjuster
What is the best way to block a switch
By padlocking
How is half-wave rectification accomplished?
By placing a diode in series with a source of AC and a load resistor.
How can an SCR be turned off in minimum time
By reversing the biasing that can be applied in the anode
What is the only difference between the symbols of the PNP and NPN transistor
By schematic symbols of the PNP and NPN transistor with battery symbols
In what two ways does an alternator operate
By the principle of either moving conductors across a magnetic field or moving a magnetic field across the conductors.
What three items are necessary to have an electromagnet
Coil of wire, core material, and current flow
In a common emitter configuration, what is resistor RL called
Collector load resistor
Given the total amperage, 3 amps, computer the voltage drop across resistor R1 in the circuit illustrated by figure 1-30C
Compute the voltage drop by using the formula E=IxR; thus 3x10=30 volts
What is shown on maintenance records
Date, type of work, test results, and other remarks
What term is used when adding impurities to silicon and germanium
Doping
When working on the airfield, why must you stay in radio contact with the control tower?
For the tower to clear you off the runway for approaching aircraft
Once the capacitor is charged when does the rectifier conduct
It conducts when the input voltage to the rectifier exceeds the voltage across the capacitor
Why is an integrated circuit a self-contained circuit?
It contains all required components
When you compare it to the RC Pi type filter, what does the LC Pi-type filter provide
It gives a high-output voltage and better voltage regulation
When you compare it to the capacitive input L-type filter, what does the inductive input L-type filter provide
It gives a lower output voltage and better voltage regulation
IN the above question, what happens to the output that is taken from the collector with respect to the emitter
It is a voltage waveform that has the characteristics as the input signal except that it has been enlarged or amplified
In what direction do the lines of force travel outside a var magnet
From the north pole to the south pole
What are the two most common materials used to make semiconductors
Germanium and Silicon
If the bucket truck is being used around energized conductors, what must you do
Ground the truck or barricade the truck and work area
List four effects of current flow
Heat, chemical change, magnetism, and physical shock
How is an electronic voltage regulator designed to operate
It is designed to maintain the output voltage nearly constant regardless of input voltage or load changes
What must the breakdown rating be for diodes you use in a full-wave rectifier?
It must be twice as great as that of the half-wave diode
What is the operating characteristics of a full-wave rectifier
It permits current to flow in the same direction through the load during both alternations of an AC input
What does the charge on a capacitor represent
It represents a storage of energy
What is the relationship between the charge and discharge times a capacitive filter should have
It should have a short charge time and a long discharge time
What are the two types of L-type filters
L-type inductor input filter and L-type capacitor input filter.
What are the two types of inspection programs you may use in your shop
Scheduled inspections and unscheduled inspections
Why are you required to use strict radio discipline
The radio nets are monitored under FCC regulations
On what side of the crossarm is the rescue line positioned
The rescue line may be run over either side of the crossarm, depending on the position of the victim and rescuer
What is the rescuer's primary concern
The rescuer's own safety
What are the essential elements of a maintenance program
The scope of work, intervals of performance, and methods of application
Which controls should you use to lower the bucket during a rescue
The secondary controls (deadman switch) located on the turntable
Name Two applications for zener diodes
Voltage regulation and limiting voltage.
Name the portion of the applied power that produces the magnetic field in an AC circuit
Wattles power (reactive power) expressed in VARs
Define residual magnetism
The induced magnetism that remains in a magnetic substance after we remove the magnetic field.
What does the inductive filter use to provide filtering action
The inductive reactance properties of the coil
Where is the input signal applied and where is the output signal developed in a common collector amplifier
The input signal is applied between the base and ground. The output signal is developed between the emitter and the ground collector. Thus, the collector is common to both input and output circuits.
What materials make up the negative and positive plates of a lead-acid battery
The negative plate is spongy lead and the positive plate is lead peroxide
How does the peak output voltage from the bridge rectifier compare to that of the full-wave rectifier?
The peak output voltage from the bridge is twice that of the full-wave
Where are power outages, surges, and low voltages recorded
The power outage log
What hazards does the gas detector test the atmosphere for
The presence of combustibles, toxic materials, and oxygen deficiency
What is the difference between a primary and a secondary cell
The primary cell can't be recharged; the secondary cell can
What is degeneration
The process of returning a part of the output of an amplifier to its input in such a manner that it cancels part of the input signal.
What symbol represents power with regards to electricity
"P"
What two items are needed to set up a bucket truck for a rescue
(1) A strap and (2) A set of rope blocks suitable for hot-line work
Match each statement in column A to the correct form number in column B. Items in column B maybe used once (1) This form is used to control all blocking and tagging done on primary electrical circuits (2) This form must never be used for other than the protection of personnel (3) This form indicates abnormal operating conditions on lines or equipment
(1) AF Form 269 (2) AF Form 979 (3) AF Form 980
List the radio procedures you would use to get clearance onto the active runway.
(1) Call the tower and identify yourself; (2) After the tower acknowledges, request clearance onto the active runway; and (3) If the tower okays clearance onto the runway, repeat the acknowledgment (e.g., "Roger, tower; understand permission to enter the active runway is approved.")
What are the five major classes of circuit components
(1) Direct logic (DL); (2) Resistor-transistor logic (RTL); (3) Diode-transistor logic (DTL); (4) Transistor-transistor logic (TTL); and (5) Direct-coupled transistor logic (DCTL)
List, in correct order, the eight steps involved in pole-top rescue
(1) Evaluate the situation (2) Provide for your protection (3) Climb to the rescue position (4) Determine the victim's condition immediately (5) Give first aid, if necessary (6) Lower the victim (7) Check for consciousness (give follow-up care or first aid) (8) Summon help
You are working with a crew of four workers at a manhole. One of the workers in the manhole is injured and must be raised out of the manhole. Briefly, what steps do you take
(1) Evaluate the situation; (2) One rescuer goes to the aid of the victim whiled another goes for the rescue rope; (3) Pass the rescue rope down to the rescuer who ties it around the victim's body; (4) Raise the victim out of the manhole; and (5) Administer first aid
What aspects of the planned job should be included in a supervisor's briefing or tailgate meeting
(1) Identification of the work site; (2) Description of the work to be done; (3) Sequence of major steps or a detailed step-by-step work listing; (4) Instructions covering special practices or grounding requirements; (5) Unusual equipment and tools and first aid requirements for hazardous materials; (6) Specific hazards and how to minimize or eliminate them by use of safety equipment
What are the changes in characteristics that result from the differences in manufacture and physical size of integrated circuits
(1) Very few capacitors and almost no inductors are used; (2) All voltages used are smaller than for discrete circuits; (3) Component values tend to be smaller than for for discrete circuits; (4) Integrated circuits transistors normally will be NPN; and (5) Throw-away maintenance is used with integrated circuits
How long must the safe clearance form be retained
1 year after release
Match the description or function in column B to the term in column A by placing the correct letter by the appropriate number. Column B responses are used only once. 1. Equal to the product of the effective values of voltage amd current 2. Symbol for inductive reactance 3. Determined by the frequency and amount of inductance in the circuit 4. Total opposition to the flow of alternating current 5. Unit of capacitance 6. Found by adding the individual reactances 7. Number of times each cycle occurs in a second 8. Causes the current to lead the voltage 9. A complete positive and negative alternation 10. Formula for determining frequency 11. The property of a coil in an AC circuit 12. Highest voltage or current reached during each alternation
1. Apparent power 2. XL 3. Inductive reactance 4. Impedance 5. Farad 6. Total reactance in an AC circuit 7. Frequency 8. Capacitance in circuit 9. Cycle 10.P/2×N/60 11. Inductance 12.maximum peak value
Match the terms in column B with the phrases in column A by placing the appropriate letter in the space provided. The terms in column B may be used once, more than once, or not at all 1. Electron in p-type material 2. Another teem for diode 3. Negative lead connected to cathode 4. Electrons in n-type material 5. Negative lead connected to anode 6. Holes in n-type material 7. Decreases when forward biased 8. Holes in p-type material
1. Majority current carriers 2. PN Junction 3. Forward bias 4. Majority current carriers 5. Reverse bias 6. Minority current carriers 7. Depletion region 8. Majority current carriers
What is the number of watts per horsepower
746 watts
What are the characteristics of resistance, current, and voltage in a DC-series circuit
1. The total resistance is the sum of the individual resistors 2. The same current flows in each part of the circuit 3. The applied voltage will divide among the resistors according to their resistance
Match the correct formula in column B to the statements in column A. Column B responses are used only once 1. Inductive reactance 2. Circuit containing resistance and inductive reactance 3. Circuit containing resistance, reactance and impedance 4. Capacitive reactance 5. Circuit containing resistance and capacitive reactance
1. XL=2(pie)×f×L 2. Z=(sqrt)(R²+XL)² 3. Z=(sqrt)(R²+(XL-Xc)²) 4. Xc=1/(2(pie)×f×C) 5. Z=(sqrt)(R²+Xc²)
Match the statement in column A with the term in column B. Column B responses are used only once 1. The ability to do work measured in joules 2. The production of motion against a resisting force measured in joules 3. The rate of doing work measured in watts 4. That which produces a change In motion of a body measured in dynes
1. energy 2. work 3. Power 4. Force
What is the phase angle between the three equal single-phase voltages of a three-phase generator
120 degrees
In a parallel circuit having four equal lamps, with an applied voltage of 120 volts and a total current flow of 4 amperes, what is the power consumed at each lamp
120 watts
How many degrees are the poles set apart for three-phase operation of an alternator
120°
What is the phase shift between the input signal voltage and the output signal voltage of a common or grounded emitter
180 degrees out-of-phase
If the ratio of a transformer is 6 to 1 and the applied voltage to the primary is 120 VAC, what is the voltage output from the secondary?
20VAC
What level of oxygen determines the atmosphere is highly oxygen rich? Why is this a hazard?
23.5%; Extreme fire hazard
What is the the three-phase, full-wave rectified output ripple frequency with a 60-hertz input
360 pps
What is the most common frequencies used for the transmission of electrical energy
60 Hz in North America, 50 Hz in Europe, and 400 Hz in and around aircraft and air ground equipment
What does the application of AC cause that results in rectification
A forward- and reverse-bias condition on a diode
What is a common collector amplifier configuration sometimes called
A grounded collector or emitter follower
What is magnetic material
A material, usually iron, that has the ability to become magnetized and retain magnetic lines of force.
With a decrease in emitter and collector current, the voltage across the load resistor (RL) decreases, what does this cause in a common base amplifier?
A positive output from collector to ground
The input signal to the NPN transistor causes base current to change at the same rate as the input signal, thus causing a change in transistor resistance. What does this change in resistance cause
A relatively large voltage change
How does the gate of an SCR receive its signal? Conduct?
A resistor is used as part of a voltage divider circuit
what can you use instead of a single-phase input when you need large amounts of power
A three-phase input
What factor enables a transistor to amplify
A transistor can amplify because its middle electrode, the base, has an electrical advantage.
Write the word or words that are appropriate to the given definition or statement. A. The uniform movement of free electrons in a specific direction B. 6.28x10^18 electrical charges C. One columbine passing a given point per second D. Symbol for current used in math formulas E. Symbol for quantity of amperes used in drawings to designate the quantity of amperes
A. Current flow B. Coulomb C. Ampere D. I E. A or a
Identify each of the statements below as applying to ac voltage or dc voltage by writing "AC" or "DC" in the space provided A. Direct current B. Alternating current C. Electrons flowing in one direction D. Has sine-wave waveform E. Electrons flow in both directions F. Produced by a battery
A. DC B. AC C. DC D. AC E. AC F. DC
Give the terms that apply to the definitions or phrases below A. Unit of measure for electrical resistance B. When one volt of pressure pushes one ampere of current flow through an electrical path, then one ohm of resistance is present C. "R"
A. Ohm B. Ohm's law C. Resistance
Show the ohm's law equation and teh solution to the following series circuit problems: A. Voltage= 90, current= 30, R=? B. Voltage=?; current= 2; and resistance R1=7, R2=5 C. Voltage= 24; current=?; resistance: R1=10, R2=8, R3=6
A. R=I/E; R=3 ohms B. E=IxR1; E=24 volts C. I=E/(R1+R2+R3); I= 1 amp
Provide the term appropriate to each of the definitions or phrases A. The force which causes electrons to move from atom to atom B. Unit of measure for "electrical pressure" C. "E" D. Changes mechanical energy into electrical energy E. Changes heat energy into electrical energy
A. Voltage or EMF B. Volt C. Voltage D. Generator E. Thermocouple
Annotate the correct statements concerning generators and alternators with a check mark A. Any DC generator must have a commutator B. There is a difference between the rotating coils and the magnetic field of an AC and a DC generator C. The current from a rotating loop with slip rings is alternating current D. The difference between AC and DC generators is the method of collecting the current E. When the generator rotating loop is parallel with the field, the generator produces maximum voltage F. A generator takes the energy of a prime mover and changes the energy to electrical power
A. Yes B. No C. Yes D. Yes E. No F. Yes
Explain Kirchoff's law for current as it applies to AC circuits
AC circuits normally contain inductive and capacitive loads as well. Although they have different formulas for determining their ohmic values, their voltage and current values can be found the same way when applying Kirchoff's laws for voltage and current in DC circuits
What form is placed on an air switch that has been closed to backfeed an area
AF Form 980
How do you classify circuits that you use in digital equipment
According to the types of components used in the circuit
Where is th eooutput voltage of a full-wave rectifier developed
Across the load resistor
Define the word electronics.
All applications involving the control of electricity using gasses or semiconductors.
What two of the best materials that are used to make man-made permanent magnets?
Alnico and ferrite
What unit of measurement is used to describe the storage capacity of a battery
Ampere-hour/amp-hour
Is the n-type material of a diode the anode or cathode?
Cathode
Do electrons flow from cathode/anode or to cathode/anode
Cathode to anode
What can you do to the secondary winding of a transformer to produce more than one voltage
Center tap it
Who is responsible for the release of all safe clearances
Electrical superintendent
who issues the safe clearance
Electrical superintendent or a designated supervisor
Who coordinates between safe clearances when more than one is issued
Electrical supervisor
What cannot be broken down into a simpler substance using ordinary chemical means
Elements
When testing an SCR or any other electronic devices, what precaution should you take
Ensure you know what voltage you are dealing with
What is the first step in performing bucket-truck rescue
Evaluate the situation
What is one of the largest problems in integrated semiconductor operations
Faulty connections between components and circuits
Identify the materials that are good insulators by placing an "I" in the correct space and the materials that are good conductors by placing a "C" in the correct space: Rubber Glass Dry air Gold Paper Copper Aluminum Zinc Silver Pure silicon
I I I C I C C C C I
What is the rule that pertains to the total current in a parallel circuit
In a parallel circuit, the total current equals the sum of the current in the branches
How are electrical motors rated
In horsepower
How are capacitive filters connected with the load
In parallel
How are inductive filters connected to the load
In series
What is the only difference between the symbols of the PNP and NPN transistors
In the PNP, the arrow points towards the base lead and in the NPN, the arrow points away from the base lead
Whose signature appears in the "Individual Ordering Tag on Equipment" block on an AF Form 979
Individual directly in charge at the work site
List four types of equipment records you need to maintain for base equipment and facilities
Instruction leaflets and manuals; installation drawings; wiring diagrams; and distribution maps
What isolates instruments from high voltages or large currents?
Instrument transformers
What may high harmonic levels cause?
Interference to control and communication lines, heating of AC motors, higher reactive power demand and hence poor power factor, misoperation of sensitive electronics, overloading of shunt capacitors, and higher power loss.
What three criteria determine factors are used to describe a confined space
Large enough for person to enter and perform work, has a limited or restricted means of entry and/or exit, and it is NOT designed for continuous human occupancy
To what can an SCR be compared
Latching relay
State the fundamental law of magnetism
Like poles repel each other; unlike poles attract
When you are using rubber protective equipment what conductor do you cover first
Lowest or nearest
What surrounds all current-carrying conductors
Magnetic lines of force
What are the four purposes of harmonic measurements
Monitoring existing values of harmonics and checking against recommended or admissible levels
What is an atom that had gained an electron called
Negative ion
When do magnetic lines of force cross
Never
Are all AC-voltage waveforms sine waves
No
Can a photo diode be used to trigger a LED?
No. (Although an LED can be used to trigger a photo diode.)
What do harmonic analyzers or wave analyzers measure?
Observations of existing background levels and tracking the trends in theme of voltage and current harmonics (daily, monthly, and seasonal patterns)
When should CPR be started
Once the victim is on the ground.
Where is the victim's safety strap cut?
Opposite the desired swing.
What formula is used to compute power in a DC circuit when you only know resistance and current
P=I^2R
A diode is also referred to as what
PN Junction
Which rating on a diode tells you the maximum voltage allowed in reverse bias
Peak inverse voltage (PIV)
In a two-person rescue, who controls the victim's rate of descent
Person on the ground
A 240-volt AC motor records 35 in-lin3 amperes. The in-line wattmeter shoes only 7,600 watts being consumed. What is the power factor of the AC circuit
Pf=90.47, or 90.5 percent
What responsibilities does the electrical supervisor have before live-line maintenance is done
Plan each job thoroughly, ensuring an adequate supply of the right tools and equipment for live maintenance, and holding a briefing to see that all crew members understand the procedures
What type of charge does a normal atom that has lost one electron have
Positive
What solution is used for the electrolyte in a nickel-cadmium battery
Potassium hydroxide and distilled water
What is defined as the rate of doing work
Power
What is the formula for power factor
Power factor=100×watts(True Power)/volts×amps(apparent power)
Name the main parts of a transformer
Primary winding and secondary winding
What type of charge does a proton and electron carry
Protons carry a positive charge. Electrons carry a negative charge
What are the steps to calculate the values in a series-parallel circuit
Reduce a series-parallel circuit to an equivalent, simplified circuit. Replace each group of parallel resistors with its equivalent single resistance; then, treat the entire circuit as a series circuit
What factors can require you to work on live lines
Requirements to support a critical mission, to prevent personal injury, or to protect property.
How can batteries be connected to form a "Battery Bank"?
Series, parallel, or series-parallel
Why is it so important that line crews identify themselves on each transmission
So the person a the other end knows for sure who is speaking
Why is it important to know the voltages you are working with
So you know whether to use rubber gloves or hot-line tools
What type of core manufacturers prefer in the construction of relays and solenoids
Soft iron core
How does a filter affect the ripple amplitude of the output of a rectifier
Soothes out the peaks, or reduces the amplitude
What is the term for an atom with eight electrons in the valence shell
Stable or balanced atom
What does a transformer with a 1 to 2 turn ratio do to the voltage
Step it up
What solution is used for the electrolyte I a lead-acid battery
Sulfuric acid and water solution
What kind of information does the display of the voltage waveform on the oscilloscope give
Testing equipment that generates harmonics
What is the peak inverse voltage for bridge rectifier and full-wave rectifier circuits
The PIV is the peak voltage applied across the entire secondary of the input transformer
In your own words, define Kirchhoff's current law
The algebraic sum of the voltages around a closed loop must equal zero
In the transistor circuit, on what factors does the gain of the current, voltage, and power amplifiers depend
The alpha and beta values and the ration of output to input resistance
How does the bridge rectifier design compare to that of the full-wave rectifier
The bridge rectifier is a modified full-wave rectifier that may have either two or four diodes. Also, a bridge rectifier does not have a center-tapped transformer
What is the difference in current flow between an AC circuit that contains only resistance and a DC circuit that contains only resistance
The current flow in a circuit containing resistance only is the same, regardless of whether the applied voltage is AC or DC
What is the relationship of the current to the voltage and resistance in a DC circuit according to Ohm's law
The current in amperes is equal to the EMF in volts divided by resistance in ohms
The rescue rope should be how long
The depth of the manhole plus 15 feet.
What happens a s the positive half cycle of the L-type filter begins to decrease
The diode approaches cutoff and the capacitor discharges through the load resistor
What does the positive alternation of the input signal applied to the emitter of the NPN common base amplifier cause
The emitter current to decrease
Who must be present for entrance into a Permit Required confined space
The entry supervisor, attendant, and entrant
What are the operations of a single-phase alternator
The first half revolution of the rotor produces a voltage in one direction and completes the first half of the cycle; the second half revolution produces a voltage in the opposite direction and completes the last half of the cycle
What is the first step to solving the series-parallel circuit in figure 1-29A
The first step is to reduce the two parallel resistors R2 and R3 to an equivalent single resistance
What is the origin of the term hertz
The term "hertz" has been adopted in recognition of Heinrich Rudolph Hertz, a German physicist
Describe an electrical current
The uniform movement of electrons in a specific direction through a conductor (wire).
What is current flow
The uniform movement of free electrons through a conductor once voltage is applied
What happens to base current, emitter current, and collector current during the negative alternation of the input signal to a NPN common emitter amplifier
They all decrease
What action takes place when you place the south pole of one magnet near the south pole of another
They repel each other
In the two-person method, why is the knot placed in front of the victim
This allows the victim's head to tilt back, keeping the air passage open
What is the purpose of a filter
To convert pulsating DC to smooth DC
What is the purpose of a battery
To store energy
What are the identifying features of a full-wave rectifier
Two diodes, a center-tapped transformer, and a load resistor
How many breaths are given to a victim who is unconscious and not breathing
Two full breaths
Which of the two methods of manhole rescue is the best? Why
Two-person method. Because the smallest individual can rescue the largest victim
How much filtering is needed to smooth DC output with low-amplitude ripple voltage
Very little
What information is needed on a n emergency operations checklist
What is to be done in step-by-step procedures. List of personnel by name, title, and telephone number. Emphasis on safety under conditions of stress, power failure, and similar emergencies
In an AC circuit, when is the apparent power equal to the true power
When the circuit consists of pure resistance
When is the true power less than the apparent power
When the current and voltage are out of phase due to reactance in a circuit
When is an atom considered electrically balanced
When the negative charge of the electron is equal to the positive charge of the proton.
When does the rectifier diode connected to the L-type filter conduct
When the positive half of the incoming since wave is applied to the transformer
When are you certified to do electrical work
When you are properly trained and familiar with the equipment and procedures.
In figure 2-6, what happens when the AC-input signal goes in the positive direction
With this polarity the diode is forward biased, the depletion region is narrow, the resistance of the diode is low, and current flows through the circuit
In figure 2-7, what happens when the AC-input signal goes in the negative direction
With this polarity the diode is reverse biased, the depletion region increases, the resistance of the diode is high, and current flows through the diode
Should you use rubber gloves to work on a 23-kV energized circuit
Yes, if you're in an electrically isolated basket or platform
What could happen if you do not observe polarity when connecting a diode
You could unintentionally block current to a circuit
Which direction does external current flow in a transistor
common emitter, common base, and common collector
What is the function of a generator
convert mechanical energy into electrical energy
How do electrons travel in a circuit
from negative to positive
what are the three basic configurations in which you can connect a transistor
negative voltage
What does current flow through the load produce in a three-phase bridge circuit
output polarity
What is the unit of measure for the output ripple frequency of a half-wave rectifier
pulses per second (pps)
What are the types of alternators
single phase and three phase
What is the controlling element in a common base configuration
the emitter
Define molecule
the smallest particle of a substance that has all the characteristics of that substance.
How is proper bias for a transistor shown on a schematic
to both the input and the output circuit
How many wraps are put around the fall line
two
How much resistance is offered by the forward biased diode of an L-type filter
very little
