Multiple Choice Questions in Electronics Engineering Part 14

Multiple Choice Questions in Electronics Engineering Part 14

1.      Who created the World Wide Web?
A. Bob Metcalfe
B. Douglas Engelbart
C. Tim Berners-Lee
D. Larry Roberts
2.      Who wrote the Transmission Control Protocol (TCP) for internet?
A. Vinton Cerf
B. Bob Khan
C. Tim Berners-Lee
D. Both A and B

3.      Who wrote the Hypertext Transfer Protocol (HTTP), the language computer could use to communicate hypertext documents over the internet?
A. Vinton Cerf
B. Bob Khan
C. Tim Berners-Lee
D. Larry Roberts

4.      What effect refers to a leakage current that flow over a surface path between the collector and emitter in some types of transistors?
A. Channel effect
B. Collector follower effect
C. Leakage effect
D. Emitter effect

5.      An effect about the change that the susceptibility of a ferrite undergoes under the influence of high RF powder.
A. Change effect
B. Damon effect
C. Dead-end effect
D. Barnett effect

6.      An outward-curving distortion of lines of force near the edges of two parallel metal plates that form a capacitor.
A. Change effect
B. Edge effect
C. Dead-end effect
D. Skin effect

7.      The extension of the electrostatic field of an air capacitor outside the space between its plates.
A. Fringe effect
B. Edge effect
C. Extension effect
D. Flywheel effect
8.      The sudden, large increase in current that occurs when a particular value of reverse voltage is reached, and which is due to ionization by the high intensity electric field in the depletion region in reverse-biased pn junction.
A. Zener effect
B. Avalanche effect
C. Radiation effect
D. Burst effect

9.      The liberation or absorption of heat when an electric current flows from a warmer to a cooler part of a conductor.
A. Zener effect
B. Skin effect
C. Surface effect
D. Thomson effect

10.  The piercing of a barrier in a semiconductor by a particle that does not have sufficient energy to go over the barrier.
A. Channel effect
B. Damon effect
C. Tunnel effect
D. Barrier effect

11.  The development of a voltage across the junction of two dissimilar materials.
A. Photovoltaic effect
B. Hall effect
C. Piezoelectric effect
D. Flywheel effect

12.  The increase in the effective grid-cathode capacitance of a vacuum tube due to the charge induced electrostatically on the grid by the anode through the grid-anode capacitance.
A. Hall effect
B. Barnett effect
C. Damon effect
D. Miller effect

13.  The development of a voltage between the two edges of a current-carrying metal strip whose faces are perpendicular to a magnetic field.
A. Hall effect
B. Barnett effect
C. Miller effect
D. Damon effect

14.  A magnetic field when applied to a right angles to the direction of a temperature gradient in a conductor, a temperature difference is produced at right angles both to the direction of temperature gradient and the direction of the magnetic field.
A. Hallwachs effect
B. Island effect
C. Isotope effect
D. Leduc effect

15.  The ability of a resonant circuit to maintain oscillation at an essentially constant frequency when fed with short pulses of energy at constant frequency and phase.
A. Flywheel effect
B. Leduc effect
C. Hall effect
D. Thomson

16.  The development of a DC voltage between two regions of a photoconductive semiconductor when one of the regions is illuminated by diffusion of an optically generated hole and electron pairs away from the illuminated region.
A. Destriau effect
B. Isotope effect
C. Dember effect
D. Hawks effect

17.  Phenomenon of a current flowing between two unequal illuminated electrodes of a certain type when they are immersed in an electrolyte.
A. Bequerel effect
B. Destriau effect
C. Dember effect
D. Hawks effect

18.  The restriction of emission from the cathode of an electron tube to a certain small areas of the cathode when the grid voltage is lower than a certain value.
A. Island effect
B. Isotope effect
C. Damon effect
D. Hawks effect

19.  The tendency for layer of semiconductor having a high secondary emission ratio to become positively charged when bombarded by electrons. This occurs when a thin insulator separates the semiconductor from the metal plates. The insulator must be very thin on the order of 10^-7 meters. This results in a potential difference of up to about 100 volts.
A. Mateucci effect
B. Malter effect
C. Destriau effect
D. Hall effect

20.  The magnetic force between adjacent current-carrying conductors is referred to as
A. motor effect
B. edge effect
C. proximity effect
D. generator effect

Multiple Choice Questions in Electronics Engineering Part 13

Multiple Choice Questions in Electronics Engineering Part 13

1.      What is anything that has weight had occupied space which may be a solid, liquid or gas?
A.    Alloy
B.     Matter
C.     Amalgam
D.    Compound

2.      What is the capacitive reactance of a 33 microfarad capacitor at 6500 Hz?
A.    0.74 ohms
B.     7.4 ohms
C.     96 ohms
D.    1122 ohms

3.      Which of the following materials refers to as a recipient of impurity element?
A.    Phosphorous
B.     Antimony
C.     Arsenic
D.    Gallium

4.      In the operation of dry cells, we normally refer to the supply of current to load resistance where its current neutralizes the separated charges at the electrodes.
A.    Aligning the cells
B.     Charging the cells
C.    Discharging the cells
D.    Polarizing the cells

5.      They are special class C amplifiers that are biased at 3 to 10 times the normal cutoff and used to generate frequency that is a harmonic of a lower frequency.
A.    Frequency generators
B.     Frequency stabilizers
C.    Frequency multipliers
D.    Frequency amplifiers

6.      In voltmeter, the purpose of series resistor is to _________.
A.    increase speed of meter movement
B.     decrease the current range
C.     decrease the voltage range
D.    increase the voltage range
7.      ICs that are combinations of monolithic and film of discrete components or any combinations thereof to allow flexibility in circuits.
A.    Hybrid IC
B.     Micro IC
C.     Mixed IC
D.    Combined IC

8.      An instrument used to record the electric potentials associated with the electrical currents that traverse the heart.
A.    Electrograph
B.     Electrolysis
C.     Electroencephalograph
D.    Electrocardiograph

9.      SUBRACT: 11001(subscript 2) – 1001(subscript 2).
A.    10001
B.     10100
C.     10010
D.    10000

10.  What is the name of an electrode found in a pentode but not in a tetrode?
A.    Control grid
B.     Screen grid
C.     Signal grid
D.    Suppressor grid

11.  What is the magnetic equivalent to electrical voltage?
A.    Flux
B.     Reluctance
C.    Magnetomotive force
D.    Magnetic field

12.  The effect of 60 Hz AC 40-100 mA or DC 160-300 mA on the human body.
A.    Mascular failure
B.     Refex action
C.     Surprise
D.    Respiratory failure

13.  How many junctions are there in a semiconductor diode?
A.    Two
B.     One
C.     None
D.    Four

14.  A transformer composed of two or more coils which are wound around a non metallic core.
A.    Metallic core transformer
B.     Free core transformer
C.     Iron core transformer
D.    Air core transformer

15.  How many half wave rectifiers will make up a half wave voltage doubler?
A.    6
B.     2
C.     8
D.    4

16.  What materials are meter pointers normally made?
A.    Copper
B.     Iron
C.     Zinc
D.    Aluminum

17.  In NPN transistor, when emitter junction is forward biased and collector junction is reversed biased, the transistor will operate in
A.    cut off region
B.     saturation region
C.     active region
D.    inverted region

18.  An instrument used to detect presence, sign and in some configurations the magnitude of an electric charge by the mutual attraction or repulsion of metal foils or pith balls.
A.    Electroscope
B.     Electrometer
C.     Electron microscope
D.    Electrograph

19.  What is the term we use to refer to the instructions we give a computer to perform?
A.    Processor
B.     Program
C.     Hardware
D.    Software

20.  The total number of magnetic lines force leaving or entering the pole of a magnet.
A.    Potential field
B.     Magnetic field
C.     Magnetic space
D.    Magnetic flux
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