ECE4A_Q1A Quiz1-AnalogIC-ECE4A_SetA PDF

ECE4A_Q1A Multiple Choice Identify the choice that best completes the statement or answers the question. 1. In JFET the voltage applied in the gate terminal controls the current flow while in Mosfet the voltage applied in the drain terminal __________ a. controls the...

ECE4A_Q1A Multiple Choice Identify the choice that best completes the statement or answers the question. 1. In JFET the voltage applied in the gate terminal controls the current flow while in Mosfet the voltage applied in the drain terminal __________ a. controls the drain current c. drain to source voltage b. controls the output voltage d. supply 2. In a common source JFET amplifier, what happens to the drain current (Id) when the gate-source voltage (Vgs) becomes more negative? a. Id decreases c. Id becomes zero b. Id increases d. Id remains constant 3. What is the primary application of Enhancement-Mode MOSFETs? a. Current amplification c. Signal switching b. Voltage amplification d. Voltage regulation 4. What type of device is a JFET when it is operating in the half of the Idss? a. Voltage regulator c. Amplifier b. Switch d. Voltage-controlled resistor 5. What does "Idss" represent in the context of JFETs? a. Drain-Source voltage c. Gate-Source voltage b. Saturation current d. Input impedance 6. When was the mosfet operates in enhancement mode? a. During the formation or addition of c. When drain current exceeds Idss channel b. When the charge carrier repelled on the d. When Vgs becomes positive channel 7. Enhancement-Mode MOSFETs are normally in an "on" state without any bias voltage. a. False c. Undetermine b. True d. Not always 8. What happens to the Drain current (Id) in a JFET as the Gate-to-Source voltage (Vgs) becomes more negative in the saturation region? a. It increases c. It decreases b. It becomes zero\ d. It remains constant  9. When was the formation of channel begin in P-channel E-Mosfet? a. When Vgs applied in the gate terminal is c. When Vgs is greater than threshold zero voltage b. When Vgs becomes positive d. When Vgs becomes negative 10. What is the primary advantage of using Enhancement-Mode MOSFETs in digital circuits? a. They provide higher voltage gain. c. They have a normally "on" state. b. They require less power. d. They offer better noise performance. 11. Which of the following corresponds to this symbol? a. N-ch E-Mosfet c. P-ch D-Mosfet b. P-ch E-Mosfet d. N-ch D-Mosfet 12. In an N-channel JFET, what type of charge carriers are responsible for current flow between the Drain and Source? a. Protons c. Ions b. Electrons d. Holes 13. Which region of operation in a JFET corresponds to maximum Drain current? a. Active c. Cut-off b. Pinch-off d. Saturation 14. What type of voltage does the Drain terminal provide in a JFET circuit? a. Reference voltage c. Feedback voltage b. Input voltage d. Output voltage 15. In E-Mosfet operation, when gate to source voltage increases, what happen to transistor? a. free electrons decrease, drain current decreases and internal resistance increases b. free electrons increase, drain current increases and internal resistance increases c. free electrons increase, drain current decreases and internal resistance decreases d. free electrons increase, drain current increases and internal resistance decreases 16. Depletion-Mode MOSFETs are normally in an "on" state without any bias voltage. a. True c. Cannot be determine b. It depends d. False 17. What does JFET stand for? a. Junction Feedback Electron Transistor c. Junction Fixed Electron Transistor b. Junction Field-Effect Transistor d. Junction Frequency Enhancement Transistor 18. Which terminal of a JFET is typically connected to the ground or reference potential in a circuit? a. Drain c. Source b. Gate d. Collector 19. Which of the following biasing techniques provides good stability but may be less efficient in terms of power consumption? a. Voltage divider biasing c. Self-biasing b. Fixed biasing d. None of the above 20. Which region of operation in a JFET corresponds to minimal Drain current? a. Saturation c. Cut-off b. Breakdown d. Active 21. What is the primary advantage of the common gate JFET configuration in amplifier applications? a. Low noise c. High voltage gain b. High current gain d. Low input impedance 22. Which type of transistor is often used in high-power amplification applications? a. JFET c. BJT b. All of these d. MOSFET 23. In which type of MOSFET is the gate-source voltage (Vgs) used to control the channel resistance and, therefore, the drain current (Id)? a. Both D-mosfet and E-mosfet c. Neither D-mosfet nor E-mosfet b. Enhancement-Mode d. Depletion-Mode 24. What happens when the gate terminal of the JFET is shorted to the ground terminal and the source voltage is less than the pinch-off voltage? a. JFET operates in the ohmic region c. JFET operates in saturation region b. JFET will be burned d. JFET will turned off 25. In self-biasing, how does an increase in the drain current (Id) affect the gate-source voltage (Vgs)? a. Vgs remains constant c. Vgs becomes zero b. Vgs decreases d. Vgs increases 26. What is the approximate voltage range for the Gate-to-Source voltage (V_gs) in the active region of an N-channel JFET?  a. Zero c. Negative b. Positive d. Any voltage 27. Which type of MOSFET is typically used in power switching applications? a. Neither D-mosfet nor E-mosfet c. Depletion-Mode b. Both D-mosfet and E-mosfet d. Enhancement-Mode 28. In a common source JFET configuration, the input is applied to which terminal? a. Body c. Source b. Drain d. Gate 29. Which type of MOSFET is more commonly used in digital integrated circuits (ICs)? a. Depletion-Mode c. Enhancement-Mode b. Neither D-mosfet nor E-mosfet d. Both D-mosfet and E-mosfet 30. Which region of operation in a JFET corresponds to minimal Drain current? a. Cut-off c. Saturation b. Active d. Breakdown 31. In a JFET, what happens to the Drain current (Id) when the Gate-to-Source voltage (Vgs) is zero? a. It increases c. It decreases b. It remains constant d. It becomes zero 32. In self biased JFET configuration, the source terminal is directly connected to _________. a. supply c. output b. resistor d. ground 33. The conductivity of the Mosfet is controlled by: a. the amount of the supply voltage c. reverse biased at the gate terminal b. charge carrier induced in the channel d. the maximum drain current 34. What is the primary parameter used to control the Drain current (Id) in a JFET? a. Gate current (Ig) c. Drain-Source voltage (Vds) b. Drain current (Id) d. Gate-Source voltage (Vgs) 35. What happens to the Drain current (Id) in a JFET as the Gate-to-Source voltage (Vgs) becomes more negative in the active region? a. It increases c. It becomes zero b. It decreases d. It remains constant 36. What should be done to turned off the enhancement Mosfet? a. The input voltage should be less than threshold voltage b. The input voltage should be equal to zero c. The input voltage should be greater than threshold voltage d. The input voltage should be less than zero 37. Which type of MOSFET requires a gate-source voltage (Vgs) greater than zero to turn on? a. Depletion-Mode c. Enhancement-Mode b. Both D-mosfet and E-mosfet d. Neither D-mosfet nor E-mosfet 38. Which JFET configuration is also known as the "emitter follower" in bipolar transistor terms? a. Common drain c. Common source b. Common base d. Common gate 39. What does "V_p" represent in the context of JFETs? a. Pinch-off voltage c. Peak voltage b. Voltage potential d. Power supply voltage 40. In an N-channel Enhancement-Mode MOSFET, what happens to the drain current (Id) when the gate-source voltage (Vgs) becomes more positive? a. Id decreases c. Id increases b. Id remains constant d. Id becomes zero 41. In a JFET, what is the primary role of the Drain terminal? a. To provide a path for current to exit the c. To modulate the Gate voltage device b. To generate a voltage reference d. To control current flow 42. In which type of MOSFET is the drain current (Id) typically controlled by the gate voltage over a wide range? a. Both D-mosfet and E-mosfet c. Neither D-mosfet nor E-mosfet b. Depletion-Mode d. Enhancement-Mode 43. In which region does a JFET act as a variable resistor? a. Cut-off c. Breakdown b. Active d. Saturation 44. Which of the following corresponds to this symbol?  a. P-Ch E-Mosfet c. N-Ch D-Mosfet b. N-Ch E-Mosfet d. P-Ch D-Mosfet 45. Which of the following statements about Depletion-Mode MOSFETs is true? a. They are also known as Enhancement-Mode MOSFETs. b. They require a positive Vgs to turn on. c. They are primarily used in low-power applications. d. They have a very high input impedance. 46. What is the primary application of Depletion-Mode MOSFETs? a. Signal switching c. Voltage amplification b. Current amplification d. Voltage regulation 47. Which type of MOSFET requires a gate-source voltage (Vgs) of zero to turn on? a. Depletion-Mode c. Enhancement-Mode b. Neither D-mosfet nor E-mosfet d. Both D-mosfet and E-mosfet 48. In a common drain JFET configuration, the drain terminal is connected to __________. a. output terminal c. supply voltage b. ground d. input terminal 49. What type of voltage does the Source terminal provide in a common gate JFET circuit? a. Feedback voltage c. Reference voltage b. Output voltage d. Input voltage 50. When was N-channel Enhancement Mosfet turned “on”? a. When Vgs is positive c. When Vgs > Vth b. When Vgs < Vds d. When Vgs is “ON” 51. Which of the following statements about P-channel Enhancement-Mode MOSFETs is true? a. They are primarily used in low-power applications. b. They are also known as Depletion-Mode MOSFETs. c. They require a negative Vgs to turn on. d. They have a very low input impedance. 52. In a N-channel Depletion-Mode MOSFET, what happens to the drain current (Id) when the gate-source voltage (Vgs) becomes more negative? a. Id increases c. Id decreases b. Id becomes zero d. Id remains constant 53. What is the primary advantage of using Depletion-Mode MOSFETs in amplification circuits? a. They provide higher voltage gain. c. They have a normally "on" state. b. They offer better noise performance. d. They require less power. 54. What is the primary function of a JFET in the active region? a. To provide a stable reference voltage c. To generate high power output b. To act as a switch d. To amplify signals 55. Which type of MOSFET is more susceptible to electrostatic discharge (ESD) damage? a. Enhancement-Mode c. Both D-mosfet and E-mosfet b. Neither D-mosfet nor E-mosfet d. Depletion-Mode 56. Which terminal of a JFET is typically connected to the ground or reference potential in a circuit? a. Gate c. Collector b. Drain d. Source 57. Which of the following trasistors does not have continous channel? a. N-channel E-Mosfet c. N-channel D-Mosfet b. P-channel JFET d. N-channel JFET 58. Which type of MOSFET is typically "off" in its natural state (without any bias voltage)? a. Depletion-Mode c. Enhancement-Mode b. Both D-MOSFET and E-MOSFET d. Neither D-MOSFET nor E-MOSFET 59. When an N-channel Depletion MOSFET is in active condition condition, what should be done to turned it off? a. Apply zero Vgs c. Apply enough positive Vgs b. Apply zero drain current d. Apply enough negative Vgs 60. In fixed biasing of a JFET, what component is typically used to set the bias voltage at the gate terminal? a. A diode c. An inductor b. A variable resistor d. A capacitor ECE4A_Q1A Answer Section 1 D 21 D 41 A 2 A 22 D 42 D 3 C 23 A 43 B 4 C 24 A 44 D 5 B 25 B 45 D 6 A 26 C 46 B 7 A 27 D 47 A 8 C 28 D 48 C 9 C 29 C 49 D 10 B 30 A 50 C 11 D 31 A 51 C 12 B 32 B 52 C 13 A 33 B 53 C 14 D 34 D 54 D 15 D 35 C 55 D 16 A 36 A 56 D 17 B 37 C 57 A 18 C 38 A 58 C 19 A 39 A 59 D 20 C 40 C 60 B