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