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. A blown-fuse indicator uses a Constant-current diode Back diode Zener diode Light-emitting diode 2 / 31 Category: Electronics basics 2. When the light increases, the reverse minority carrier current in a photodiode Is unaffected Reverses direction 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 3 / 31 Category: Electronics basics 3. Which type of semiconductor is used in Tunnel Diode? Degenerated semiconductor Elemental semiconductor Compound semiconducto Extrinsic semiconductor 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 diffusion capacitance at high-frequency AC voltage They can act as ON-OFF switches They have three modes of operations They have dynamic resistance at low-frequency AC voltage 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 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? Degenerated semiconductor Compound semiconductor Compensated semiconductor Intrinsic semiconductor 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. 7 / 31 Category: Electronics basics 7. Which of the following is wrong about solar cell electronic devices? It is a photovoltaic cell Solar cell responsivity is directly proportional to the wavelength of light No external voltage is applied It produces dark current 8 / 31 Category: Electronics basics 8. A voltmeter is used: to measure current in parallel with the circuit in series with the circuit to measure coulombs 9 / 31 Category: Electronics basics 9. Which of the following semiconductor is mostly used to construct electronic circuits? Germanium Tin Selenium Silicon 10 / 31 Category: Electronics basics 10. f the depletion layer gets wider, the capacitance is variable Stays the same increases Decreases 11 / 31 Category: Electronics basics 11. For typical operation, you need to use reverse bias with a Photodiode All of the above Varactor Zener diode 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. 12 / 31 Category: Electronics basics 12. 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 connected in reverse bias No external voltage is applied 13 / 31 Category: Electronics basics 13. A photodiode is normally Neither forward- nor reverse biased Emitting light Reverse-biased Forward-biased 14 / 31 Category: Electronics basics 14. Which of the following is not a physical component of an electronic circuit? Capacitor Diode Inductor Temperature 15 / 31 Category: Electronics basics 15. The varactor is usually Forward-biased Unbiased Operated in the breakdown region Reverse-biased 16 / 31 Category: Electronics basics 16. An example of potential energy is the sun a moving vehicle tea-kettle steam a battery 17 / 31 Category: Semiconductor diode (PN junction) 17. Which type of diode is work as a Variable Capacitor? LED Varactor Diode Tunnel Diode Photo diode 18 / 31 Category: Electronics basics 18. To display the digit 8 in a seven-segment indicator, F must be on All segments must be on C must be lighted G must be off 19 / 31 Category: Electronics basics 19. The term used to designate electrical pressure is resistance conductance voltage voltage 20 / 31 Category: Electronics basics 20. Which resistive component is designed to be temperature sensitive? Rheostat Thermistor Photoconductive cell Potentiometer 21 / 31 Category: Electronics basics 21. 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 22 / 31 Category: Electronics basics 22. Which of the following is not an electronic device? A mobile A computer A magnifying glass A keyboard 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? Degenerative Compound Compensated Elemental 24 / 31 Category: Electronics basics 24. Current is considered as the movement of nuclei electrons protons charge 25 / 31 Category: Electronics basics 25. In which of the following region does BJT act as the amplifier electronic device? Cut-off Active Reverse saturation Saturation 26 / 31 Category: Electronics basics 26. Which of the following is the correct order of turn-off times? MOSFET < BJT < IGBT < SCR MOSFET < IGBT < BJT < SCR SCR < BJT < IGBT < MOSFET BJT < MOSFET < 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. 27 / 31 Category: Electronics basics 27. One coulomb passing a point in one second is one charge volt ohm ampere 28 / 31 Category: Electronics basics 28. Forbidden Energy gap (EG) of a semiconductor in electronic devices depends on which of the following factors? Material constant Electron affinity Interatomic distance Recombination and Generation 29 / 31 Category: Electronics basics 29. What is the color code for a 220 5% resistor? Red, Red, Brown, Silver Red, Red, Brown, Gold Red, Red, Black, Gold Orange, Orange, Black, Gold 30 / 31 Category: Electronics basics 30. Which of the following has a negative-resistance region? Schottky diode Step-recovery diode Tunnel diode Optocoupler 31 / 31 Category: Electronics basics 31. Which voltage source converts chemical energy to electrical energy? Electrical generator Battery Electronic power supply Solar cell Your score is LinkedIn Facebook 0% Restart quiz Exit Anonymous feedback Thank you Send feedback Share this
