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ATT TEST 2 LATEST TEST 2025 | ALL QUESTIONS
AND CORRECT ANSWERS | GRADED A+ | VERIFIED
ANSWERS | NEWEST VERSION | JUST RELEASED
What type of amplifier configuration has the input applied to the emitter and the output taken from the collector? ---------CORRECT ANSWER-------------- ---Common Base (T/F) Transformers can reverse the phase of the applied AC voltage or sine wave. ---------CORRECT ANSWER-----------------True What is the basic unit of capacitance? ---------CORRECT ANSWER----------- ------The Farad (F) What is the ability of a capacitor to store a charge? ---------CORRECT ANSWER-----------------Capacitance What is the numerical value given to the Di-electric material of the capacitor? ---------CORRECT ANSWER-----------------Di-electric constant What is the ability of the magnetic field of one coil to induce voltage in a second coil? ---------CORRECT ANSWER-----------------Mutual Inductance What removes signal voltages above or below a specific level? --------- CORRECT ANSWER-----------------Limiters
When current flows through a coil what is developed? ---------CORRECT ANSWER-----------------A magnetic field Step up transformers produce? ---------CORRECT ANSWER-----------------A higher Es than Ep Reverse the phase of the applied AC voltage or sine wave is called? --------
- CORRECT ANSWER-----------------Phase inversion The absence of dots or dots at the same points on a transformer schematic symbol indicates that there is no ____________. ---------CORRECT ANSWER-----------------Phase inversion The cathode of a diode is represented by _____________. --------- CORRECT ANSWER-----------------A bar For a function generator, which modification of the output signal changes the amount of DC voltage? ---------CORRECT ANSWER-----------------DC offset In the frequency section of a function section of a function generator, what do the range switches select? ---------CORRECT ANSWER----------------- The multiplier for the frequency dial
Frequency counters determine the ______________. ---------CORRECT ANSWER-----------------Period of one cycle in a signal The basic unit of inductance ______________. ---------CORRECT ANSWER-----------------Henry (H) An open in the primary of a transformer ______________. --------- CORRECT ANSWER-----------------No current flow in the secondary The inductor is used to ____________. ---------CORRECT ANSWER--------- --------Concentrate a magnetic field What adds a DC voltage to the AC input signal? ---------CORRECT ANSWER-----------------Clampers An open in the secondary of a transformer prevents an output voltage in ________________. ---------CORRECT ANSWER-----------------The open secondary What occurs when windings in the primary or secondary coils allow an alternate low resistance path for current flow. ---------CORRECT ANSWER- ----------------Shorts N type material has _____________. ---------CORRECT ANSWER------------ -----Free electrons
Two common inductor cores are _____________. ---------CORRECT ANSWER-----------------Air and iron The purpose of a transformer is to? ---------CORRECT ANSWER-------------- ---Control signals What reduces the number of turns in the coil? ---------CORRECT ANSWER- ----------------Short What are shorts across the entire winding? ---------CORRECT ANSWER---- -------------Complete shorts If the ______________ has a short the output voltage increases. --------- CORRECT ANSWER-----------------Primary The physical appearance of inductors _____________. ---------CORRECT ANSWER-----------------Varies Inductors have the value of their inductive capacity indicated by ______________. ---------CORRECT ANSWER-----------------Print or color code on the body of the inductor Inductors are commonly identified by their ______________. --------- CORRECT ANSWER-----------------Core type
In an NRN transistor, the base DC bias voltage must be _______. --------- CORRECT ANSWER-----------------Positive compared to the emitter Which amplifier has the best efficiency? ---------CORRECT ANSWER-------- ---------Class C Electrolytic capacitors are ____________. ---------CORRECT ANSWER----- ------------Polarized What are the dielectric types used by capacitors? ---------CORRECT ANSWER-----------------Electrolytic, ceramic, and film When an input is applied across the emitter to base PN junction, what is the relative resistance? ---------CORRECT ANSWER-----------------Low When an input is applied across the collector to base PN junction, what is the relative resistance? ---------CORRECT ANSWER-----------------High Alpha is the ratio of ________________. ---------CORRECT ANSWER------- ----------Ic to Ie (Ic/Ie) The point when Ic no longer increases although base bias voltage increases is called? ---------CORRECT ANSWER-----------------Saturation
The point where Ib and Ic stop is called? ---------CORRECT ANSWER------- ----------Cutoff What happens in a transistor when the saturation point is reached? --------- CORRECT ANSWER-----------------Ic stops increasing Capacitors are identified by their _______________. ---------CORRECT ANSWER-----------------The type of dielectric used What happens in a transistor when base voltage reverse biases the emitter to base PN junction? ---------CORRECT ANSWER-----------------Cutoff occurs The purpose of an _____________ is to increase signal strength. --------- CORRECT ANSWER-----------------Amplifier Transistor amplifiers require what type of signals to functions? --------- CORRECT ANSWER-----------------DC bias and AC input signals What amplifiers are biased so the input signal occurs within the limits of cutoff and saturation? ---------CORRECT ANSWER-----------------Class A What changes are necessary for amplification to occur? ---------CORRECT ANSWER-----------------Small change in Eb and large change in Ic
What are oscilloscopes used to measure? ---------CORRECT ANSWER----- -------------Wave shape
- Amplitude
- Period Induction occurs when ___________. ---------CORRECT ANSWER----------- ------A conductor passes through a magnetic field A cutoff transistor acts like? ---------CORRECT ANSWER-----------------It is an open Peak voltage of a sine wave is ______________. ---------CORRECT ANSWER----------------- 10 ___________ is determined by the highest positive or negative voltage obtained. ---------CORRECT ANSWER-----------------Peak The ___________ value of a sine wave is determined by doubling the peak value. ---------CORRECT ANSWER-----------------Peak to peak Average value multiplier ---------CORRECT ANSWER-----------------.637 x VP
The type of biasing that compensates for temperature changes, but decreases Beta is called ________________. ---------CORRECT ANSWER-----------------Self biasing Transistor amplifiers operate by AC input signal changing the ____________. ---------CORRECT ANSWER-----------------Base Bias _______________ is calculated by measuring from the zero base line to the most positive or negative point of the sine wave. ---------CORRECT ANSWER-----------------Peak voltage The primary characteristic of the diode can be described as? --------- CORRECT ANSWER-----------------Changing AC current flow to DC current flow _______________ is calculated by measuring from the most positive to the most negative point of the sine wave. ---------CORRECT ANSWER------------ -----Peak to Peak What is the amount by which wave-forms lead or lag one another? --------- CORRECT ANSWER-----------------Phase angle Which amplifier configuration has the best properties for an amplifier? ------- --CORRECT ANSWER-----------------Common emitter
What is a function generator used for? ---------CORRECT ANSWER---------- -------Producing AC signals The time it take to complete one cycle is called ____________. --------- CORRECT ANSWER-----------------Period What is the reference designator for the inductor? ---------CORRECT ANSWER-----------------L What is a component that has the ability to concentrate a magnetic field? -- -------CORRECT ANSWER-----------------The inductor To induce voltage in an inductor, the current flow must be? --------- CORRECT ANSWER-----------------Increasing or decreasing The physical appearance of capacitors ____________. ---------CORRECT ANSWER-----------------Varies What type of current carriers are in N type material? ---------CORRECT ANSWER-----------------Electrons In and inductor: open switch Induced voltage ____________ and total circuit current _____________. -- -------CORRECT ANSWER-----------------Decreases
The output of a transformer is taken from the ____________. --------- CORRECT ANSWER-----------------Secondary Capacitors are identified by which two variables? ---------CORRECT ANSWER-----------------Farads and voltage In and inductor: closed switch Induced ____________ decreases and total ____________ increases. ----- ----CORRECT ANSWER------------------Voltage
- Circuit current As current _______________ the inductor __________ circuit current. ------ ---CORRECT ANSWER------------------Increases
- Decreases As current ____________ the inductor increases circuit current. --------- CORRECT ANSWER-----------------Decreases What is the ability of a conductor to induce (generate) voltage "cut" by magnetic flux. ---------CORRECT ANSWER-----------------Inductance What is the basic unit of inductance? ---------CORRECT ANSWER------------ -----The Henry (H)
What are general purpose capacitors used to isolate one circuit from another, block unwanted signals and produce wave shapes? --------- CORRECT ANSWER-----------------Non-polarized capacitors What capacitor is polarity sensitive? Major use is filtering power supplies. -- -------CORRECT ANSWER-----------------Electrolytic capacitor What provides varying amounts of capacitance? Used in transmitters and receivers. ---------CORRECT ANSWER-----------------Variable capacitor What does the N indicate in the identification number 1N34A? --------- CORRECT ANSWER-----------------A solid state device What is the purpose of a transformer? ---------CORRECT ANSWER----------- ------Transfer power Transformers operate on the principle of _________. ---------CORRECT ANSWER-----------------Mutual inductance The input to a transformer is applied to one coil called _____________. ---- -----CORRECT ANSWER-----------------Primary What is from a power source to a load or from one circuit to another? --------
- CORRECT ANSWER-----------------The power transfer
The output of a transformer is taken from the other coil which is called ______________. ---------CORRECT ANSWER-----------------Secondary What transformers are mostly used in power supplies? ---------CORRECT ANSWER-----------------Iron core What transformer are often used in radio circuits? ---------CORRECT ANSWER-----------------Air core A complete short in the secondary of transformer ____________. --------- CORRECT ANSWER-----------------Eliminates secondary voltage Where is the capacitor charge stored? ---------CORRECT ANSWER---------- -------In an electrostatic field between the plates ____________ in the secondary eliminates the output voltage. --------- CORRECT ANSWER-----------------Complete shorts The unit of measure for inductors is the _________. ---------CORRECT ANSWER-----------------Henry (H) What type of materials have holes? ---------CORRECT ANSWER-------------- ---P type
Any voltage less than _________ will keep the silicon diode from conducting. ---------CORRECT ANSWER-----------------.7 volts What is made from semiconductor materials that have the properties of conductors and insulators? ---------CORRECT ANSWER----------------- Diodes In a diode current flows in what direction? ---------CORRECT ANSWER------ -----------1 Direction Current flows from the __________ to the anode, but not from the ______ to the cathode. ---------CORRECT ANSWER-----------------Cathode Aniode
