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