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