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