Electronics Engineering Coaching Materials: Section 3 Module 1

(Last Updated On: April 3, 2018)

This is the Section 3 Module 1 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 1

ELECTRICITY / MAGNETISM FUNDAMENTALS

1. Whenever a flux inking a coil or current changes, an emf is induced in it.

FARADAY’S FIRST LAW OF ELECTROMAGNETIC INDUCTION

2. The magnitude of the induced emf in a coil is directly proportional to the rate of change of flux.

FARADAY’S SECOND LAW OF ELECTROMAGNETIC INDUCTION

3. In intrinsic semiconductor, formation of holes and free electrons that increases in  temperature is known as

THERMAL CARRIER

4. conductor stationary…

MAGNETIC MOVING STATICALLY INDUCED EMF

5. In group of atoms, the energy level depends on close proximity of atoms

ENERGY BAND/BOND

6. Ratio of numbers of atoms in an isotope of the same element in a given sample.

ABSORPTION RATIO

7. The reason why electrons are not pulled into the nucleus of an atom

CENTRIFUGAL FORCE/OUTWARD FORCE

8. Magnetic fields do not intersect with ______

STATIONARY ELECTRIC CHARGE

9. capacitor current leads voltage

BY 90 DEGREES

10. Inductor for an AF, 400 Hz

Toroidal

11. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.

COULOMB’S FIRST LAW

12. Formed when there exist distant electronic interactions between (opposite) charges present in the neighboring atoms or molecules.

VAN DER WAALS BOND

13. Direction of Magnetic field in a conductor

FLEMING’S LEFT HAND RULE

14. If double (voltage), half (resistance)

4 TIMES AS GREAT (CURRENT)

15. In resistor circuits, the connection that has greater power dissipation is ________ connection.

BOTH SERIES AND PARALLEL

16. The square root of the ratio of line impedance and shunt admittance is called _______ of the line.

SURGE IMPEDANCE

17. the most common type of crystal defect

LINE DEFECT

18. In DC circuit, if the voltage is doubled, the resistance is halved, the current will?

FOUR TIMES AS GREAT

19. Holes and Electrons should overcome the electrostatic force, another name for electrostatic field is

Barrier

20. A formula for the overall transmittance of a signal flow graph in terms of transmittances of various paths in the graph.

MASON’S THEOREM

21. A regulator that maintains the output voltage where the current drops to resistor in series with the load

SHUNT REGULATOR

22. What is the type of linear regulator used in applications requiring efficient utilization of the primary power source?

SERIES REGULATOR

23. In pure silicon, the holes and electrons are in _____.

EQUAL NUMBER

24. Unit of insulation resistance

MEGGER

25. A parallel conductor has. . . in what direction?

OPPOSITE DIRECTION

26. Oppose the creation of magnetic field

RELUCTANCE

27. placing an ion

ION IMPLANTATION

28. Ability of a material to produce magnetic lines and inherit with other magnetic field-magnetism?

MAGNETISM

29. Theory of ferromagnetic phenomena which assumes each atom is a permanent magnet which can turn freely about its center under the influence of applied field and other magnets.

EWING’S THEORY OF FERROMAGNETISM

30. Why is it that the magnitude of magnetomotive force required for air gap is much greater than that required for iron part of a magnetic circuit?

BECAUSE AIR HAS THE LOWEST RELATIVE PERMEABILITY

31. depletion is caused by

IONIZATION, RECOMBINATION, DIFFUSION

32. The basic operation of the accelerometer is based on what physical property?

INERTIA

33. A liquid crystal . . . liquid like

NEMATIC

34. Generation of voltage occurs when there is a movement between the connecting wires and

MAGNETIC LINES OF FORCE

35. The ratio of the permeability of a material to the permeability of vacuum in free space

RELATIVE PERMEABILITY

36. In PNP circuit, the emitter is heavily doped and the base is lightly doped. The flow on the base is mainly

HOLES

37. the idea of preventing one component to the other component through their common electric and magnetic fields.

SHIELDING

38. line impedance and admittance

SURGE IMPEDANCE

39. Defect due to missing atom in the lattice

VACANCY DEFECT

40. The ratio of the permeability of material to the permeability of air or vacuum

RELATIVE PERMITTIVITY

41. Magnetic susceptibility is inversely proportional to temperature

CURIE EFFECT

42. Difference between kinetic energy of electron and electrostatic potential energy

BINDING ENERGY

43. Attracts electrons towards itself

ELECTRONEGATIVITY

44. 0.375 kW dc shunt motor

FLUX CONTROL

45. A magnetic field when applied to a right angle to the directions of a temperature gradient in a conductor, a temperature diff. is produced at right angles both to the direction of a temperature gradient and the direction of the magnetic field

LEDUC

46. A law that state that the current in a thermionic diode varies directly with the three- halves power of anode voltage and inversely with the square of the distance between the electrodes, provided operating conditions are such that the current is limited only by the space change.

CHILD’S LAW

47. a two fermion …..anti-symmetric

PAULI-EXCLUSION PRINCIPLE

48. Intrinsic semiconductors have covalent bonds that form ____ structure.

TETRAHEDRAL

49. Concentration of in P-type than N-type

HOLES

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