Electronics Engineering Coaching Materials: Section 3 Module 2

This is the Section 3 Module 2 of the compiled Electronics Coaching Materials taken from different sources including but not limited to Electronics books, past Board Exams Questions, Journals and the Internet.

Electronics Coaching Materials: Section 3 Module 2

This is the Section 3 Module 2 of the compiled Electronics Coaching Materials taken from different sources including but not limited to Electronics books, past Board Exams Questions, Journals and other Electronics References. This particular Coaching Notes in Electronics Engineering has random Questions and Answers in random topics. Make sure to familiarize each questions to increase the chance of passing the ECE Board Exam.

Electronics Engineering Coaching: Section 3 Module 2

ELECTRICAL CIRCUIT

1. no depletion

SCHOTTKY DIODE

2. what action results in the increase in current that generates more heat and the cycle repeat itself until the diode draws excessive current?

THERMAL RUNAWAY

3. Most valid diode check test is by using diode test.

dynamic electric

4. Schottky diode is commonly use than other diode because____ delay

LOWER PROPAGATION

5. Connection of resistors that will have high voltage gain

BOTH PARALLEL AND SERIES CONNECTION

6. If the VGS is zero the current flowing is

IDS

7. Series-parallel resistors will give a higher ___ than a single resistor alone.

POWER RATING

8. In full-wave rectifier, the ripple voltage is _____the half-wave circuit.

TWICE THAN THAT OF

9. allows to be used as a voltmeter, an ammeter, or an ohmmeter

VOM

10. The effects used in ammeter: a.) thermal, b.) magnetic, and _____

ELECTROMAGNETIC INDUCTION

11. A single-phase split capacitor do not have _____ switch.

CENTRIFUGAL

12. Used in stereo compact disc

AUDIO – TAPER POTENTIOMETER

13. consists of resistors for constant adjustment ...

LINEAR-TAPER POTENTIOMETER

14. ... motion limit ...

LIMIT SWITCH

15. Capacitors store electrical energy as ___.

ELECTRIC FIELD

16. resistor parallel with the load

NORTON'S THEOREM

17. Resistor that is in has a higher power rating

SERIES PARALLEL COMBINATION

18. Prevent excessive current

SNUBBER CIRCUIT

19. Chief reason why digital ….

SIMPLIFY THEIR CIRCUITRY

20. Most commonly used in insulation?..

MAY ISA PA AND HEAT-SHRINKABLE TUBING

SOLID STATE DEVICES/CIRCUIT

1. GaAs and LED can emit light in _____________ region

INFRARED

2. Circuit with stable manner and the load impedance varies

OPTOISOLATOR

3. accurate snap acting switch

MICROSWITCH

4. differentiator (feedback)

THYRECTOR

5. The____of SCR and triac (common)…1st and 3rd (triac)…2nd quotation (SCR)

VI CHARACTERISTICS

6. The LASCR is used as a

LATCH

7. LASCR acts like

LATCH

8. Advantage of SCR

LEAST PROPAGATION DELAY

9. The dv/dt effect of SCR result to

FALSE TRIGGERING

10. Phototransistor responds like a conventional transistor except that in their case, the light energy is used to

SWITCH IT ON

11. In measuring transistor ratio gain using ohmmeter, what is indicated by 10-to-1 resistance ratio?

NORMAL GAIN

12. the frequency region where the bypass and coupling capacitor cannot be used for short circuit approximation

LOW FREQUENCY

13. The dv/dt effect in an SCR results in ____.

FALSE TRIGGERRING SPEED OF OPERATION

14. The di/dt effect of SCR

LOCAL HOT SPOT

15. The power efficiency . . .

SWITCH

16. The Q-point on voltage amplifier is selected at the middle of the active region because it then requires small ____

DC VOLTAGE

17. In transistor, connecting the common emitter has a____ input resistance and ___ output resistance

MEDIUM, HIGH

18. The smallest effect of scattering _______ scattering

CRYSTAL IMPERFECTION

19. zener diode connection to regulator

LOW INPUT Z, HIGH INPUT Z

20. voltage gain is unity

VOLTAGE FOLLOWER

21. Configuration of stability of radio frequency . . .

COMMON BASE

22. High input impedance of a MOSFET is due to small leakage current in the ________.

GATE TERMINAL

23. Semiconductor are variable _______ properties of any material

CONDUCTIVE

24. LASCR is the same as SCR because they are

LIGHT TRIGGERED DEVICE

25. In emitter ……the rate of flow is higher if the collector…. base current is _______.

DECREASE

26. Junction recombination occurs in the p-type and n-type materials through ____...

DIFFUSION OF ELECTRONS AND HOLES

27. instrument that measures the movement of hot-stirred metals and slabs

INFRARED AND ULTRAVIOLET DEVICES

28. Achieving low distortion in audio application by using Class B amplifier or two bipolar transistor or FETs during cut-off or ______ region. –

PINCH OFF

29. Field-effect transistors (FETs) depend on variation of ______ on its operation.

DEPLETION LAYER WIDTH REVERSE VOLTAGE

30. conduction of LED is possible through_____________

RECOMBINATION OF CHARGES

31. maximum reverse voltage that will not cause breakdown

DC BLOCKING VOLTAGE

32. Resistor in the base of the transistor

PROPER BIAS

33. the characteristic of the transistor???? can be recognized by the input bias and_______________.

AMPLITUDE OF THE INPUT SIGNAL

34. commonly used bias ………….that overcomes the disadvantage of having base current and self – bias and has thermal stability

- COMBINATIONAL BIAS

35. Operating point shall not be on the saturated region because of

THERMAL RUNAWAY

36. Darlington

- MULTI EMITTER TRANSISTOR

37. Darlington

2 ADJACENT TRANSISTOR

38. When Vd reaches the value of the Vp or pinch off voltage, Id ( drain current) is

SATURATED

39. Darlington

ENOURMOUS IMPEDANCE

40. emitter-collector….

- OPEN BASETRANSIT TIME

41. class B……two transistor FET….or_________...

- PINCH-OFF

42. In transistor checking, what method is cumbersome when more than one transistor is bad in the circuit

SUBSTITUTION METHOD

43. Time required for an electron or hole to travel from emitter to collector.

Transit time

44. What plays an important role in transistor maintenance because transistor before it is replaced or tested, lead is identified?

- TRANSISTOR LEAD CONFIGURATION

45. The time taken for the holes or electrons to flow from the emitter to collector?

- TRANSIENT TIME

46. Transistors are in __________ condition when there is no applied input signal.----

QUIESCENT

47. ……quiescent …..

- NO SIGNAL

48. Transistor results in saturation because of

- REDUCES EFFICIENCY

49. LED use gallium because

THEY EMIT MORE LIGHT

50. A multiple-terminal solid-state device similar to a transistor that generates frequencies up to about 10000 MHz by injecting electrons or holes into a space-charge layer which rapidly forces these carriers to a collecting electrode.

- SPACISTOR

51. Made from two or more constituents material having a property different in macroscopic form

- COMPOSITE MATERIAL

52. Distribution of electrons in an atom

- CONFIGURATION OR STUCTURE

53. Between JFET and MOSFET, what is most commonly used because of its wide range of bias

- MOSFET

54. For the operation of an N-type E-MOSFET, the gate voltage should be

HIGH POSITIVE

55. MOSFET breaks in normal handling due to

- LEAKAGE CURRENT AND HIGH INTERNAL RESISTANCE

56. Emitter-base has zero bias or reversed bias and has no collector current

- CUTOFF

57. In the enhancement N-type MOSFET , the gate voltage is

- VERY HIGH

58. A transistor that is invented in 1950’s as an improvement of point contact transistor --

SPACISTOR

59. current gain in common collector is called

- GAMMA

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