Electronics Engineering Coaching Materials: Section 2 Module 1

(Last Updated On: April 3, 2018)

This is the Section 2 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 2 Module 1

MAGNETIC CIRCUITS

1. Ferromagnetic core is placed in inductors to

INCREASE INDUCTANCE

2. Lenz’s law is the consequence of the law of conservation of

ENERGY

3. Force between a magnet and a piece of ferromagnetic material that is not yet magnetized

IS NEVER REPULSIVE

4. A high retentivity material is useful to

MAKE PERMANENT MAGNET

5. Characteristic of a DC electromagnet

CONSTANT POLARITY

6. The intensity of magnetic lines of force are maximum

MAGNETIC POLES

7. When charges are forced to move by the electric field of a potential difference, ___ current is said to flow

DRIFT CURRENT

8. In magnetic video tape, video track is________

DIAGONAL

ELECTRICAL ELEMENTS

1. Capacitor store charge a. . .electric . . .

ELECTRIC FIELD

2. In series-parallel network……. used same _________

RESISTOR

3. Converts ac voltage to another ac voltage level

AC – CONVERTER

4. Plastic insulation is used in what voltage level

MEDIUM TO LOW

5. Peak-to-peak amplitude of a perfect sine wave is equal to ___

TWICE THE PEAK AMPLITUDE

6. Dielectric material for electric ion

MICA

7. In negative coefficient, capacitance _______ as temperature rises

DECREASE

8. Dielectric material used in high voltage transformer.

PORCELAIN

9. An advantage of toroidal coil over solenoid is that the magnetic flux in the toroidal coil is contained

WITHIN THE CORE

10. As the area of the plate increases, the capacitor _________ increases.

CAPACITANCE

11. The connection between circuit elements

JUNCTION

12. Metal film resistor has low

INDUCTANCE

13… move closer to solenoid

INCREASES

14. Inductor works by storing energy in a …

MAGNETIC FIELD

15. Type of resistor with color band in the body

CARBON-COMPOSITION RESISTOR

16. Total opposition of current flow

IMPEDANCE

17. Enamel insulating wire is the same as

Metal Wire

18. Capacitance in a reverse bias circuit _____

DECREASES

19. Completely non-reactive

CARBON COMPOSITION

20. Straight wire is _____ in near wire

STRONGER

21. Controls the output voltage

FIELD VOLTAGE

DIRECT CURRENT

1. Node which KCL is applicable

PRINCIPAL NODE

2. “When any number of voltage sources of arbitrarily generated voltage and finite internal resistance different from zero are connected in parallel, resulting voltage across the parallel combination is the ratio of the algebraic sum of the internal conductance”

MILLMAN’S THEOREM

AC CIRCUITS

1. It can vary AC but not DC

FREQUENCY

2. Heat dissipation of AC circuits depends on the ____of the circuit

RESISTANCE

3. Relay is used to ____ the current

DECREASE

4. What term is used to describe current pulses that flow in the same direction?

PULSATING DIRECT CURRENT

5. Ratio of the rms value to the mean average value

FORM FACTOR

6. High ac- voltage, low dc- voltage

INVERTER

7. Usual input to electric switching device

SQUARE WAVE

8. Other name of closed-path

LOOP

TRANSIENT/ RESONANCE

1. Greatest factor on the figure of merit of a circuit

RESISTANCE

SEMICONDUCTORS

1. Another name for step recovery diode

CHARGE STORAGE DIODE

2. When diode increases voltage the

RESISTANCE DECREASE

3. Parameter of a common base gain

ALPHA

4. Transduction principle used in optical sensors

PHOTOVOLTAIC TRANSDUCTION

5. Rejects common mode signals present on both inputs

CMRR

6. Element with exactly four valence electrons is an _____ semiconductor

ELEMENTAL

7. Capacitance in a reverse bias PN-junction depends on ____.

REVERSE SATURATION CURRENT

8. Majority of power diode uses

SILICON

9. Trivalent, boron gallium

INDIUM

10. Gunnplexer is used in ________

MICROWAVE COMMUNICATION

11. Compound hysteresis

SCHMITT TRIGGER

12. Photodiode when not used as a photovoltaic cell

REVERSE BIAS

13. The semiconductor doping impurities arsenic, antimony, and bismuth are classified as what type of impurities?

PENTAVALENT

14. Device used in microwave frequency

GUNNDIODE

15. Another term for trivalent impurity atom

ACCEPTOR

16. An alloy that melts directly to liquid and have no plastic or semi-liquid state

EUTECTIC ALLOY

17. The ability of a substance to exist in more than four lattice form is called

ALLOTROPY

18. In PNP transistor, the collector is ______ with respect to emitter

NEGATIVE

19. A zener has a _______ resistance.

NEGATIVE

20. Transient suppression avoid the risk of

DIODE FAILURE

21. Most commonly used semiconductor material

SILICON

22. Flow of holes

PLUS- MINUS

23. Maximum reverse voltage applied before entering the zener region –

PIV

24. In common base, output is taken at

COLLECTOR

25. In zener diode, the region where current is in opposite direction of the forward bias current

ZENER REGION

26. Zener is useful as

AMPLIFIER

27. Not a characteristic of CMOS chip

ABILITY TO HANDLE EXTREMELY HIGH POWER

28. Semiconductor is reverse biased to large amount of enough voltage

AVALANCHE EFFECT

29. Kind of Bias that is Constant & improve

COMBINATIONAL BIAS

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