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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