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. Which voltage source converts chemical energy to electrical energy? Electronic power supply Battery Solar cell Electrical generator 2 / 31 Category: Electronics basics 2. Which of the following semiconductor is mostly used to construct electronic circuits? Silicon Germanium Selenium Tin 3 / 31 Category: Semiconductor diode (PN junction) 3. Which type of diode is work as a Variable Capacitor? Tunnel Diode Photo diode Varactor Diode LED 4 / 31 Category: Electronics basics 4. The varactor is usually Unbiased Operated in the breakdown region Forward-biased Reverse-biased 5 / 31 Category: Electronics basics 5. Which resistive component is designed to be temperature sensitive? Photoconductive cell Potentiometer Rheostat Thermistor 6 / 31 Category: Electronics basics 6. To display the digit 8 in a seven-segment indicator, F must be on C must be lighted All segments must be on G must be off 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? 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 8 / 31 Category: Electronics basics 8. Which of the following has a negative-resistance region? Optocoupler Schottky diode Step-recovery diode Tunnel diode 9 / 31 Category: Electronics basics 9. Which of the following is not an electronic device? A magnifying glass A mobile A keyboard A computer 10 / 31 Category: Electronics basics 10. Which of the following is not a physical component of an electronic circuit? Inductor Temperature Diode Capacitor 11 / 31 Category: Electronics basics 11. Current is considered as the movement of nuclei electrons charge protons Degenerative N-type and degenerative p-type semiconductors are used in tunnel diodes. Tunnel diodes are used in microwave electronic devices and circuits 12 / 31 Category: Electronics basics 12. Which type of semiconductor is used in Tunnel Diode? Degenerated semiconductor Extrinsic semiconductor Compound semiconducto Elemental semiconductor 13 / 31 Category: Electronics basics 13. For a low voltage rectification: Bridge rectifier is suitable None Both bridge and full-wave rectifier are suitable Two diode full-wave rectifier is suitable 14 / 31 Category: Electronics basics 14. One coulomb passing a point in one second is one charge ampere volt ohm 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. 15 / 31 Category: Electronics basics 15. 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 16 / 31 Category: Electronics basics 16. 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 17 / 31 Category: Electronics basics 17. An example of potential energy is the sun a battery a moving vehicle tea-kettle steam 18 / 31 Category: Electronics basics 18. In which of the following region does BJT act as the amplifier electronic device? Saturation Cut-off Reverse saturation Active 19 / 31 Category: Electronics basics 19. f the depletion layer gets wider, the capacitance increases is variable Stays the same Decreases 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. When the light increases, the reverse minority carrier current in a photodiode Decreases Is unaffected Reverses direction Increases P-N junction diodes have two modes of operations i.e. forward and reverse bias. 22 / 31 Category: Electronics basics 22. 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 have three modes of operations They can act as ON-OFF switches They have dynamic resistance at low-frequency AC voltage 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? Compound Compensated Degenerative Elemental 24 / 31 Category: Electronics basics 24. For typical operation, you need to use reverse bias with a Photodiode Zener diode All of the above Varactor 25 / 31 Category: Electronics basics 25. Which of the following is true about Zener diode? It is mostly used in voltage regulator electronic circuits It is used in forward bias It is lightly doped It is used in forward bias 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. 26 / 31 Category: Electronics basics 26. What type of semiconductor is used in LED electronic circuits? Degenerated semiconductor Compound semiconductor Intrinsic semiconductor Compensated semiconductor 27 / 31 Category: Electronics basics 27. A photodiode is normally Neither forward- nor reverse biased Emitting light Forward-biased Reverse-biased 28 / 31 Category: Electronics basics 28. What is the color code for a 220 5% resistor? Red, Red, Brown, Gold Red, Red, Black, Gold Orange, Orange, Black, Gold Red, Red, Brown, Silver 29 / 31 Category: Electronics basics 29. A blown-fuse indicator uses a Light-emitting diode Zener diode Constant-current diode Back diode 30 / 31 Category: Electronics basics 30. A voltmeter is used: in series with the circuit in parallel with the circuit to measure coulombs to measure current 31 / 31 Category: Electronics basics 31. The term used to designate electrical pressure is voltage resistance conductance voltage Your score is LinkedIn Facebook Twitter 0% Restart quiz Exit Anonymous feedback Thank you Send feedback Share this