Electronics Quiz Questions with Answers

Electronics Quiz Questions with Answers

Electronics Quiz Questions with Answers

Electronics Quiz Questions with Answers Part 1


1) The process of making a radio receiver sensitive to a particular frequency alone is known as:

Answer: Tuning.


2) During playback of a tape recorder, the tape is drawn past the poles of the head at a constant speed of:

Answer: 5 cm/second.


3) The reverse process of modulation is _?

Answer: Detection.


4) The middle region of the transistor is known as?

Answer: Base.


5) The part of T.V camera which produces the beam required for scanning is called:

Answer: Electron gun.


6) Example of acceptor is?

Answer: Gallium.


7) The hole is considered as?

Answer: Equivalent of a positive charge.


8) The process of adding certain impurities in the crystal structure of a semi-conductor so as to improve its conductivity is called?

Answer: Doping.


9) What is a liquid crystal?

Answer: They are organic compounds resembling both liquid and crystals.


10) The impurity used to make p-type semiconductor is:

Answer: Boron or gallium or indium.


11) The majority of carriers in n-type semiconductor is:

Answer: Electron.


12) The function of valve depends on the phenomenon?

Answer: Thermionic emission.


13) A semiconductor one side of which is doped with a p-type impurity and the other side is doped with n-type impurity is called:

Answer: PN junction diode.


14) What is known as a diffused junction?

Answer: The P.N junction obtained by diffusing impurity into the semiconductor crystal.


15) When the P region and N region of a P-N diode are connected to the negative and positive poles of the battery respectively it is said to be in:

Answer: Reverse biased.


Electronics Quiz Questions with Answers Part 2


16) Which device work on the principle of thermionic emission?

Answer: Valve.


17) The process of mixing the audio signals with high-frequency carrier waves is called:

Answer: Modulation.


18) The waves used in radar can be considered to be:

Answer: Microwaves.


19) Who invented the tunnel diode?

Answer: Leo Esaki.


20) Which must have the proper size to match the impedance of the transmitter or receiver to that of space?

Answer: The antenna.


21) Image orthicon is a kind of:

Answer: Pick up tube.


22) What is called the type of modulation in which the frequency of the carrier waves is altered in accordance with the audio signals?

Answer: Frequency modulation.


23) Which of the electronics is known as wonder child of electronics?

Answer: Transistor.


24) In amplitude modulation which of the carrier wave is changed in accordance with the sound pattern?

Answer: Amplitude.


25) The third electrode in a triode is known as?

Answer: Control grid.


26) Electricity is not conducted through germanium because the number _?

Answer: Free electrons are comparatively less.


27) Current conduction in n-type semi-conductor is due to _?

Answer: Free electrons.


28) What do you mean by electronics?

Answer: The study of behavior of electrons, their control and use.


29) Semi-conductor crystal having an excess of electrons by doping is named?

Answer: N-type semi-conductor.


30) Example of donor is?

Answer: Antimony.


Electronics Quiz Questions with Answers Part 3


31) The process of extracting audio signals from the high-frequency carrier wave is known as?

Answer: Detection.


32) The upper limit of audibility for a normal human ear is?

Answer: 20000.


33) Detection is a kind of _?

Answer: Rectification.


34) A function that cannot be done by a junction of a diode is _?

Answer: Oscillation.


35) Power gain is equal to _?

Answer: Voltage gain x Current gain.


36) For producing high-frequency carrier wave we use:

Answer: Oscillator.


37) Which is the main part of a tuner in the radio receiver?

Answer: Variable condenser.


38) It is a process of allowing electric current to flow only in one direction that is changing A.C in to D.C.

Answer: Rectification.


39) What is called amplification?

Answer: It is the process of strengthening weak signals.


40) What is oscillation?

Answer: It is a process of conversion of D.C in to a signal of desired frequency.


41) In our T.V. system time taken for scanning one frame is:

Answer: 1/25 second.


42) The impurity to be added to get n-type semi-conductor is _?

Answer: Arsenic.


43) The rays starting from the cathode discharge tube are called:

Answer: Cathode rays.


44) The unit used to express wavelength is:

Answer: Angstrom.


45) The thermionic valve named triode has _?

Answer: 3 electrodes.


Electronics Quiz Questions with Answers Part 4


46) The impurity to be added to get p-type semi-conductor is _?

Answer: Boron.


47) The scientist who discovered that though gases are not good conductors, high voltage electricity can discharge through gases was:

Answer: William Crookes.


48) Current conduction in p-type semi-conductor is due to _?

Answer: Holes.


49) The value of the capacitor is expressed in the unit:

Answer: Farad.


50) The simplest type of valve is called:

Answer: Diode.


51) The valve having three electrodes is known as:

Answer: Triode.


52) Substances like glass, mica and rubber are called:

Answer: Insulators.


53) The current carriers in PNP transistor consist of _?

Answer: Holes.


54) The vacuum tubes (valves) were discovered by:

Answer: Lee de Forest.


55) The current carriers in NPN transistor consist of _?

Answer: Electrons.


56) The process of broadcasting in which the frequency of radio waves is changed in accordance with the sound signals is known as:

Answer: Frequency modulation.


57) The device which can be used as an amplifier and an oscillator is _?

Answer: Transistor.


58) In the pure state the semiconductors are known as what?

Answer: Intrinsic.


59) After doping a semiconductor will have good electrical conductivity. In such a stage it will be known as:

Answer: Extrinsic.


60) If a silicon crystal is doped with an element of group five it becomes:

Answer: N-type semiconductor.


Read 300 General Science Questions and Answers

Leave a Comment