HomeElectronics Multiple choice question MCQ online testBasic electronics MCQ question answer Basic electronics MCQ question answer Leave a Comment / Electronics Multiple choice question MCQ online test Spread the love 0% 0 votes, 0 avg Created on September 19, 2022Basic electronics Basic electronics 2 1 / 31 Category: Electronics basics Which of the following semiconductor is mostly used to construct electronic circuits? Selenium Silicon Germanium Tin 2 / 31 Category: Electronics basics In which of the following region does BJT act as the amplifier electronic device? Saturation Active Cut-off Reverse saturation 3 / 31 Category: Electronics basics For a low voltage rectification: Two diode full-wave rectifier is suitable None Bridge rectifier is suitable Both bridge and full-wave rectifier are suitable P-N junction diodes have two modes of operations i.e. forward and reverse bias. 4 / 31 Category: Electronics basics Which of the following is wrong about P-N junction diodes used in electronic devices? They have diffusion capacitance at high-frequency AC voltage They have three modes of operations They have dynamic resistance at low-frequency AC voltage They can act as ON-OFF switches 5 / 31 Category: Electronics basics A photodiode is normally Emitting light Forward-biased Reverse-biased Neither forward- nor reverse biased 6 / 31 Category: Electronics basics Which resistive component is designed to be temperature sensitive? Photoconductive cell Thermistor Potentiometer Rheostat Solar cell is a photovoltaic cell. No external voltage is applied and solar cell responsivity is directly proportional to the wavelength of the incident light. It doesn’t produce dark current. 7 / 31 Category: Electronics basics Which of the following is wrong about solar cell electronic devices? It produces dark current It is a photovoltaic cell No external voltage is applied Solar cell responsivity is directly proportional to the wavelength of light 8 / 31 Category: Electronics basics Which voltage source converts chemical energy to electrical energy? Battery Electrical generator Solar cell Electronic power supply 9 / 31 Category: Electronics basics Which of the following is not a physical component of an electronic circuit? Capacitor Inductor Temperature Diode 10 / 31 Category: Electronics basics One coulomb passing a point in one second is one charge ampere volt ohm LEDs need compound type semiconductors because they have direct band gap. In direct band gap, photons are easily generated when electrons release energy during recombination. 11 / 31 Category: Electronics basics What type of semiconductor is used in LED electronic circuits? Intrinsic semiconductor Compound semiconductor Degenerated semiconductor Compensated semiconductor 12 / 31 Category: Electronics basics When the light increases, the reverse minority carrier current in a photodiode Decreases Is unaffected Increases Reverses direction 13 / 31 Category: Electronics basics Which of the following is the correct order of turn-off times? MOSFET < IGBT < BJT < SCR BJT < MOSFET < IGBT < SCR MOSFET < BJT < IGBT < SCR SCR < BJT < IGBT < MOSFET Electronic devices like MOSFET have the lowest turn-off times (nanoseconds). BJT has turn-off times in between nanoseconds to microseconds. IGBT and SCR have turn-off times of about 1 and 5 microseconds respectively. Photo diode is a photoconductive cell. External voltage is applied and P-N junction is connected in reverse bias. Electron-hole pairs are generated by photons in the depletion layer. 14 / 31 Category: Electronics basics Which of the following is correct about photodiode electronic devices? Electron-hole pairs are generated by impurity injection in depletion layer It is a photovoltaic cell No external voltage is applied connected in reverse bias 15 / 31 Category: Electronics basics What is the color code for a 220 5% resistor? Red, Red, Brown, Silver Red, Red, Brown, Gold Red, Red, Black, Gold Orange, Orange, Black, Gold 16 / 31 Category: Electronics basics The term used to designate electrical pressure is voltage conductance resistance voltage 17 / 31 Category: Electronics basics A voltmeter is used: in parallel with the circuit to measure current to measure coulombs in series with the circuit Degenerative N-type and degenerative p-type semiconductors are used in tunnel diodes. Tunnel diodes are used in microwave electronic devices and circuits 18 / 31 Category: Electronics basics Which type of semiconductor is used in Tunnel Diode? Degenerated semiconductor Compound semiconducto Extrinsic semiconductor Elemental semiconductor 19 / 31 Category: Electronics basics Which of the following is true about Zener diode? It is used in forward bias It is used in forward bias It is mostly used in voltage regulator electronic circuits It is lightly doped 20 / 31 Category: Electronics basics To display the digit 8 in a seven-segment indicator, All segments must be on G must be off F must be on C must be lighted 21 / 31 Category: Semiconductor diode (PN junction) Which type of diode is work as a Variable Capacitor? Tunnel Diode Photo diode Varactor Diode LED 22 / 31 Category: Electronics basics A blown-fuse indicator uses a Zener diode Back diode Constant-current diode Light-emitting diode 23 / 31 Category: Electronics basics For typical operation, you need to use reverse bias with a Zener diode Photodiode Varactor All of the above Mass action law is related to the concentration of electrons and holes in a semiconductor. Degenerative type semiconductors show similar behavior to metal. So, Mass action law is not valid for them. 24 / 31 Category: Electronics basics Mass action law is not valid for which type of semiconductors in electronic devices? Compound Degenerative Compensated Elemental 25 / 31 Category: Electronics basics The varactor is usually Forward-biased Operated in the breakdown region Reverse-biased Unbiased 26 / 31 Category: Electronics basics f the depletion layer gets wider, the capacitance increases Decreases is variable Stays the same 27 / 31 Category: Electronics basics Forbidden Energy gap (EG) of a semiconductor in electronic devices depends on which of the following factors? Electron affinity Recombination and Generation Material constant Interatomic distance 28 / 31 Category: Electronics basics An example of potential energy is a battery tea-kettle steam a moving vehicle the sun 29 / 31 Category: Electronics basics Current is considered as the movement of charge protons nuclei electrons 30 / 31 Category: Electronics basics Which of the following has a negative-resistance region? Optocoupler Step-recovery diode Tunnel diode Schottky diode 31 / 31 Category: Electronics basics Which of the following is not an electronic device? A computer A keyboard A magnifying glass A mobile Your score is LinkedIn Facebook 0% Restart quiz Exit Anonymous feedback Thank you Send feedback Spread the love
