Basic electronics MCQ question answer Leave a Comment / Electronics Multiple choice question MCQ Share this 0% 7 Created on September 19, 2022Basic electronics Basic electronics 2 1 / 31 Category: Electronics basics 1. An example of potential energy is a moving vehicle the sun a battery tea-kettle steam 2 / 31 Category: Electronics basics 2. A blown-fuse indicator uses a Light-emitting diode Constant-current diode Back diode Zener diode Hint 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. 3 / 31 Category: Electronics basics 3. Which of the following is wrong about solar cell electronic devices? It produces dark current Solar cell responsivity is directly proportional to the wavelength of light It is a photovoltaic cell No external voltage is applied Hint 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. 4 / 31 Category: Electronics basics 4. Mass action law is not valid for which type of semiconductors in electronic devices? Elemental Compensated Compound Degenerative 5 / 31 Category: Electronics basics 5. Which voltage source converts chemical energy to electrical energy? Electrical generator Electronic power supply Solar cell Battery 6 / 31 Category: Electronics basics 6. Which of the following is true about Zener diode? It is used in forward bias It is mostly used in voltage regulator electronic circuits It is used in forward bias It is lightly doped Hint 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. 7 / 31 Category: Electronics basics 7. What type of semiconductor is used in LED electronic circuits? Intrinsic semiconductor Compound semiconductor Degenerated semiconductor Compensated semiconductor 8 / 31 Category: Electronics basics 8. Forbidden Energy gap (EG) of a semiconductor in electronic devices depends on which of the following factors? Interatomic distance Material constant Recombination and Generation Electron affinity 9 / 31 Category: Electronics basics 9. The varactor is usually Operated in the breakdown region Unbiased Reverse-biased Forward-biased Hint 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. 10 / 31 Category: Electronics basics 10. Which of the following is correct about photodiode electronic devices? Electron-hole pairs are generated by impurity injection in depletion layer connected in reverse bias No external voltage is applied It is a photovoltaic cell 11 / 31 Category: Electronics basics 11. For typical operation, you need to use reverse bias with a Zener diode Varactor Photodiode All of the above 12 / 31 Category: Electronics basics 12. Which of the following semiconductor is mostly used to construct electronic circuits? Silicon Selenium Germanium Tin Hint P-N junction diodes have two modes of operations i.e. forward and reverse bias. 13 / 31 Category: Electronics basics 13. 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 have diffusion capacitance at high-frequency AC voltage They can act as ON-OFF switches They have three modes of operations 14 / 31 Category: Electronics basics 14. Which of the following has a negative-resistance region? Tunnel diode Step-recovery diode Optocoupler Schottky diode 15 / 31 Category: Electronics basics 15. Which of the following is not an electronic device? A mobile A keyboard A computer A magnifying glass 16 / 31 Category: Electronics basics 16. What is the color code for a 220 5% resistor? Orange, Orange, Black, Gold Red, Red, Brown, Silver Red, Red, Black, Gold Red, Red, Brown, Gold 17 / 31 Category: Electronics basics 17. Which of the following is not a physical component of an electronic circuit? Diode Inductor Temperature Capacitor 18 / 31 Category: Electronics basics 18. A voltmeter is used: in series with the circuit in parallel with the circuit to measure coulombs to measure current 19 / 31 Category: Electronics basics 19. To display the digit 8 in a seven-segment indicator, All segments must be on G must be off F must be on C must be lighted 20 / 31 Category: Electronics basics 20. f the depletion layer gets wider, the capacitance Decreases increases is variable Stays the same 21 / 31 Category: Electronics basics 21. A photodiode is normally Neither forward- nor reverse biased Forward-biased Emitting light Reverse-biased 22 / 31 Category: Semiconductor diode (PN junction) 22. Which type of diode is work as a Variable Capacitor? Tunnel Diode Photo diode Varactor Diode LED 23 / 31 Category: Electronics basics 23. Which resistive component is designed to be temperature sensitive? Potentiometer Thermistor Rheostat Photoconductive cell 24 / 31 Category: Electronics basics 24. One coulomb passing a point in one second is one ampere ohm charge volt 25 / 31 Category: Electronics basics 25. When the light increases, the reverse minority carrier current in a photodiode Decreases Increases Reverses direction Is unaffected 26 / 31 Category: Electronics basics 26. For a low voltage rectification: Bridge rectifier is suitable Two diode full-wave rectifier is suitable Both bridge and full-wave rectifier are suitable None 27 / 31 Category: Electronics basics 27. Which of the following is the correct order of turn-off times? MOSFET < IGBT < BJT < SCR MOSFET < BJT < IGBT < SCR BJT < MOSFET < IGBT < SCR SCR < BJT < IGBT < MOSFET 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. 28 / 31 Category: Electronics basics 28. The term used to designate electrical pressure is voltage conductance voltage resistance Hint Degenerative N-type and degenerative p-type semiconductors are used in tunnel diodes. Tunnel diodes are used in microwave electronic devices and circuits 29 / 31 Category: Electronics basics 29. Which type of semiconductor is used in Tunnel Diode? Elemental semiconductor Extrinsic semiconductor Compound semiconducto Degenerated semiconductor 30 / 31 Category: Electronics basics 30. In which of the following region does BJT act as the amplifier electronic device? Reverse saturation Cut-off Active Saturation 31 / 31 Category: Electronics basics 31. Current is considered as the movement of nuclei protons charge electrons Your score is The average score is 32% LinkedIn Facebook Twitter 0% Restart quiz Exit Send feedback Share this