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Questions:

1. The constant current region of a JFET lies between pinch-off and breakdown.
2. What is the knee voltage for a silicon diode?
3. A power supply with 0% voltage regulation is a regulated power supply.
4. Two similar 15V zener diodes connected in series will give a regulated output voltage of 30V.
5. The unit of h-parameter is mho.
6. Which type of voltage regulator is considered more efficient?
7. In a linear IC voltage regulator, the series pass transistor operates in the active region.
8. The load regulation of IC 723 is 0.03%.
9. In CMOS logic circuits, the n-MOS transistor acts as a pull-down network.
10. Electro-optical effect is produced in LED.
11. The random motion of free electrons and holes due to thermal agitation is called diffusion.
12. The impurity level in an extrinsic semiconductor is about 1 atom per 10^8 atoms.
13. The resistivity of pure germanium under standard conditions is about 60 ohm-cm.
14. What is the operating voltage range of CMOS?
15. The three terminals in a TRIAC are MT-1, MT-2, and Gate.
16. Determine the operating point for the given circuit using a silicon transistor with =100.
17. Find the output voltage for the given circuit.
18. How many types of voltage multipliers are there?
19. How many types of clampers exist?
20. Which biasing method is independent of transistor beta?
21. A self-bias arrangement improves Q-point stability when both B and R_2 are large.
22. If in a transistor, I_B I_C, the transistor is in saturation.
23. If the emitter-base junction is open, what is the value of collector voltage?
24. An FET cannot operate at V_GS=0V if it is an E-MOSFET.
25. What is the phase difference between input and output in a common-base transistor configuration?
26. The magnitude of the current source in the AC equivalent circuit of an FET depends on external drain resistance.
27. In a p-channel JFET, the current carriers are holes.
28. Which transistor configuration has a maximum current gain of unity?
29. A transistor is in a quiescent state when no signal is applied to the input.
30. Ripple factor of a half-wave rectifier is 1.21.
31. A one-section filter consists of capacitor and inductor.
32. Three cascaded amplifier stages, each with a gain of 50, result in an overall gain of 125000.
33. A phototransistor has a much higher level of noise than a photodiode.
34. The voltage gain of a common-collector transistor configuration is less than 1.
35. The point of intersection of DC and AC load lines represents the operating point.
36. In an amplifier, a coupling capacitor prevents DC mixing with the output.
37. Negative feedback in an amplifier stabilizes the gain.
38. Barkhausen criterion for sustained oscillations states that A=1.
39. RC coupling is used for voltage amplification.
40. A Wien bridge oscillator uses both positive and negative feedback.
41. In a Colpitt's oscillator, feedback is obtained from the center of a split capacitor.
42. Which type of oscillator provides a fixed frequency?
43. A JFET's pinch-off voltage is given by V_P.
44. What is the gate voltage in a JFET at which drain current becomes zero?
45. A certain D-MOSFET biased at V_GS=0V has a specified I_DSS=20mA and V_P=-5V. What is the value of drain current?
46. An n-channel D-MOSFET with positive V_GS operates in enhancement mode.