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