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