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ATT TEST 6 EXAM LATEST 2025 150 QUESTIONS AND VERIFIED ANSWERS ALREADY GRADED A., Exams of Physics

Vanderbilt University (Vandy)Physics

ATT TEST 6 EXAM LATEST 2025 150 QUESTIONS AND VERIFIED ANSWERS ALREADY GRADED A. _____ Bias Voltage (VGG) is applied to the _____. - CORRECT ANSWER>>Negative/Gate A Negative Bias Voltage (VGG) on the Gate creates a____ in the FET. - CORRECT ANSWER>>Barrier An Increase Negative Gate Voltage (VGG) causes... - CORRECT ANSWER>>An increase in PN Junction Barrier What is the purpose of a sine wave oscillator? - CORRECT ANSWER>>Convert DC Energy to sinusoidal AC Energy. What is the purpose of a Hartley Oscillator? - CORRECT ANSWER>>Convert DC Energy to sinusoidal AC Energy. What is the purpose of a colpitts oscillator? - CORRECT ANSWER>>Convert DC Energy to sinusoidal AC Energy. What is the purpose of a RC phase shift oscillator? - CORRECT ANSWER>>Convert DC Energy to sinusoidal AC Energy.

Typology: Exams

2024/2025

Available from 07/04/2025

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ATT TEST 6 EXAM LATEST 2025 150 QUESTIONS AND
VERIFIED ANSWERS ALREADY GRADED A.
_____ Bias Voltage (VGG) is applied to the _____. - CORRECT ANSWER>>Negative/Gate
A Negative Bias Voltage (VGG) on the Gate creates a____ in the FET. -
CORRECT ANSWER>>Barrier
An Increase Negative Gate Voltage (VGG) causes... - CORRECT ANSWER>>An increase in
PN
Junction Barrier
What is the purpose of a sine wave oscillator? - CORRECT ANSWER>>Convert DC Energy
to sinusoidal AC Energy.
What is the purpose of a Hartley Oscillator? - CORRECT ANSWER>>Convert DC Energy to
sinusoidal AC Energy.
What is the purpose of a colpitts oscillator? - CORRECT ANSWER>>Convert DC Energy to
sinusoidal AC Energy.
What is the purpose of a RC phase shift oscillator? - CORRECT ANSWER>>Convert DC
Energy to sinusoidal AC Energy.
What is the purpose of a crystal oscillator? - CORRECT ANSWER>>Convert DC Energy to
sinusoidal AC energy.
What is the purpose of a sawtooth generator? - CORRECT ANSWER>>Convert square
wave energy to a sawtooth waveform.
The FET is a ___________. - CORRECT ANSWER>>Unipolar Device
The element that current carries enter the FET through is called? - CORRECT
ANSWER>>Source
The element that current carriers leave through is called? - CORRECT ANSWER>>Drain
The flow of current carriers through the FET is controlled by this element. -
pf3
pf4
pf5

Partial preview of the text

Download ATT TEST 6 EXAM LATEST 2025 150 QUESTIONS AND VERIFIED ANSWERS ALREADY GRADED A. and more Exams Physics in PDF only on Docsity!

ATT TEST 6 EXAM LATEST 2025 150 QUESTIONS AND

VERIFIED ANSWERS ALREADY GRADED A.

_____ Bias Voltage (VGG) is applied to the _____. - CORRECT ANSWER>>Negative/Gate A Negative Bias Voltage (VGG) on the Gate creates a____ in the FET. - CORRECT ANSWER>>Barrier An Increase Negative Gate Voltage (VGG) causes... - CORRECT ANSWER>>An increase in PN Junction Barrier What is the purpose of a sine wave oscillator? - CORRECT ANSWER>>Convert DC Energy to sinusoidal AC Energy. What is the purpose of a Hartley Oscillator? - CORRECT ANSWER>>Convert DC Energy to sinusoidal AC Energy. What is the purpose of a colpitts oscillator? - CORRECT ANSWER>>Convert DC Energy to sinusoidal AC Energy. What is the purpose of a RC phase shift oscillator? - CORRECT ANSWER>>Convert DC Energy to sinusoidal AC Energy. What is the purpose of a crystal oscillator? - CORRECT ANSWER>>Convert DC Energy to sinusoidal AC energy. What is the purpose of a sawtooth generator? - CORRECT ANSWER>>Convert square wave energy to a sawtooth waveform. The FET is a ___________. - CORRECT ANSWER>>Unipolar Device The element that current carries enter the FET through is called? - CORRECT ANSWER>>Source The element that current carriers leave through is called? - CORRECT ANSWER>>Drain The flow of current carriers through the FET is controlled by this element. -

CORRECT ANSWER>>Gate What is the most common fault in a FET amplifier? - CORRECT ANSWER>>A failed semiconductor component. What is it called when current flow remains constant? - CORRECT ANSWER>>Saturation What are the 4 steps to troubleshoot an amplifier? - CORRECT ANSWER>>(1.) Determine amplifier operation (2.) Determine if Vcc is present (3.) Determine if FET is good (4.) Isolate problem to bias circuit How is a Hartley Oscillator identified? - CORRECT ANSWER>>They have two inductors in the feedback circuit. How is frequency determined in a Hartley Oscillators? - CORRECT ANSWER>>The values of the components in the feedback circuit determine the frequency. How is a colpitts oscillator identified? - CORRECT ANSWER>>Two capacitors in the feedback circuit. How is frequency determined in a colpitts oscillator? - CORRECT ANSWER>>Frequency is determined by the components in the feedback circuit. How is an RC Phase Shift oscillator identified? - CORRECT ANSWER>>They have three RC networks in the feedback circuit. What is the total phase shift in an RC Phase shift oscillator? - CORRECT ANSWER>> 360 degrees. Q1 is a common emitter amplifier that produces a 180 degree phase shift. Each RC network produces a phase shift as well. How is frequency determined with the sawtooth oscillator? - CORRECT ANSWER>>The frequency of the output is determined by the frequency of the input. What is the purpose of a blocking oscillator? - CORRECT ANSWER>>They change DC into short, rectangular pulses that can be used as timing pulses to trigger other circuits.

The action of converting detected intelligence into sound waves that a human can hear.

  • CORRECT ANSWER>>Reproduction The action of separating the low frequency intelligence from the high frequency carrier.

CORRECT ANSWER>>Detection The ability of the receiver to isolate one station's frequency from the many frequencies present at the antenna. - CORRECT ANSWER>>Selection Occurs when a transmitted electromagnetic wave passes through the receiver's antenna. - CORRECT ANSWER>>Reception What are AM receivers? What does the AM broadcast band cover? - CORRECT ANSWER>>AM receivers are electronic devices that pick up signals sent from AM transmitters. Frequencies go from 535 KHz to 1605 KHz Which is the most widely used FET? - CORRECT ANSWER>>Common Source What is Calculated Av? - CORRECT ANSWER>>Gm*Rd What are common gate FET normally used as? - CORRECT ANSWER>>Switch What are Common Source and Common Drain FETs normally used for? - CORRECT ANSWER>>Amplifiers Forward biased measurements indicate what? - CORRECT ANSWER>>Normal resistance reading is low. A high reading indicates an Open FET. Reversed biased measurements indicate what? - CORRECT ANSWER>>Normal resistance measurement is high. A low reading indicates a shorted FET. With the diode test function, how many directions should current flow? - CORRECT ANSWER>>One What is Amplitude Modulation? - CORRECT ANSWER>>Occurs when the carrier frequency is altered in the amplitude by the lower intelligence frequency.

How many circuits do the turner block contain? What does each one do? - CORRECT ANSWER>>Tuner contains 3 circuits. (RF Amplifier- selects and amplifies one frequency from the many picked up by the antenna. Local Oscillator- produces a frequency 455 KHz above the selected RF. Mixer- produces four frequencies) What is LO, RF, LO+RF, and LO-RF? - CORRECT ANSWER>>LO Frequency- 455 KHz LO+RF- Adds 455 KHz to the RF. RF- Given number LO-RF- is also referred to as the intermediate frequency (IF). The transistors in a Multivibrator are biased so.... - CORRECT ANSWER>>That they are either in cutoff or saturation. When a transistor in a Multivibrator is ON, it's output voltage is ________. - CORRECT ANSWER>>LOW In a Multivibrator, what is meant by a transistor being on? - CORRECT ANSWER>>The transistor is in saturation. Free running Multivibrators generate a square wave output.... - CORRECT ANSWER>>Anytime the operating voltage is applied. In an astable Multivibrator, what determines which transistor turns ON when power is first applied? - CORRECT ANSWER>>The transistor that conducts first. What type of operation does a monostable Multivibrator use? - CORRECT ANSWER>>Triggered What is the frequency of any monostable Multivibrator? - CORRECT ANSWER>>The same as the input The frequency of an monostable Multivibrator is determined by____________. - CORRECT ANSWER>>The input trigger frequency

Electrons leave the FET from the ... - CORRECT ANSWER>>Drain The_____ Controls Electron flow. - CORRECT ANSWER>>Gate N Channel FET's operate by placing... - CORRECT ANSWER>>Positive charge on the Drain. FET's require ____ Bias to operate. - CORRECT ANSWER>>Negative Increasing Reverse Bias VGS... - CORRECT ANSWER>>Decreases Id Decreasing Reverse Bias of VGS... - CORRECT ANSWER>>Increases Id Positive Bias Voltage (VDD) is applied to the... N Channel FET - CORRECT ANSWER>>The Drain Positive Bias Voltage on the Drain produces... N Channel FET - CORRECT ANSWER>>Current flow . An increase in PN Channel Barrier causes... - CORRECT ANSWER>>A decrease in SourceTo Drain Current. JFET Cutoff happens when... - CORRECT ANSWER>>Negative Gate Voltage (VGG) increases to the point of no electron flow. N Channel is made up of... - CORRECT ANSWER>>A bar of N type Material with two island P Type Material. A P Channel FET is made up of... - CORRECT ANSWER>>A bar of P Type of Material with two island N Type Material. selects and amplifies one frequency from the many picked up by the antenna. - CORRECT ANSWER>>RF Amplifier Local Oscillator - CORRECT ANSWER>>produces a frequency 455 KHz above the selected RF Mixer - CORRECT ANSWER>>produces four frequencies