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. For typical operation, you need to use reverse bias with a All of the above Zener diode Photodiode Varactor 2 / 31 Category: Electronics basics 2. In which of the following region does BJT act as the amplifier electronic device? Reverse saturation Saturation Cut-off Active 3 / 31 Category: Electronics basics 3. Current is considered as the movement of nuclei protons charge electrons 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. 4 / 31 Category: Electronics basics 4. 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 5 / 31 Category: Electronics basics 5. Which voltage source converts chemical energy to electrical energy? Solar cell Electronic power supply Battery Electrical generator 6 / 31 Category: Electronics basics 6. A photodiode is normally Reverse-biased Forward-biased Neither forward- nor reverse biased Emitting light 7 / 31 Category: Electronics basics 7. Which resistive component is designed to be temperature sensitive? Thermistor Photoconductive cell Potentiometer Rheostat 8 / 31 Category: Electronics basics 8. A blown-fuse indicator uses a Light-emitting diode Zener diode Constant-current diode Back diode 9 / 31 Category: Semiconductor diode (PN junction) 9. Which type of diode is work as a Variable Capacitor? Photo diode Tunnel Diode Varactor Diode LED 10 / 31 Category: Electronics basics 10. f the depletion layer gets wider, the capacitance Stays the same Decreases is variable increases 11 / 31 Category: Electronics basics 11. The term used to designate electrical pressure is voltage conductance voltage resistance 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? Compensated semiconductor Degenerated semiconductor Intrinsic semiconductor Compound semiconductor 13 / 31 Category: Electronics basics 13. An example of potential energy is the sun tea-kettle steam a battery a moving vehicle 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. 14 / 31 Category: Electronics basics 14. Which of the following is wrong about solar cell electronic devices? No external voltage is applied It is a photovoltaic cell Solar cell responsivity is directly proportional to the wavelength of light It produces dark current 15 / 31 Category: Electronics basics 15. Which of the following has a negative-resistance region? Schottky diode Optocoupler Tunnel diode Step-recovery diode 16 / 31 Category: Electronics basics 16. To display the digit 8 in a seven-segment indicator, C must be lighted F must be on All segments must be on G must be off 17 / 31 Category: Electronics basics 17. Which of the following is not an electronic device? A computer A magnifying glass A keyboard A mobile 18 / 31 Category: Electronics basics 18. When the light increases, the reverse minority carrier current in a photodiode Reverses direction Is unaffected Increases Decreases 19 / 31 Category: Electronics basics 19. Which of the following is the correct order of turn-off times? SCR < BJT < IGBT < MOSFET BJT < MOSFET < IGBT < SCR MOSFET < BJT < IGBT < SCR 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. 20 / 31 Category: Electronics basics 20. One coulomb passing a point in one second is one volt ampere charge ohm 21 / 31 Category: Electronics basics 21. The varactor is usually Reverse-biased Operated in the breakdown region Unbiased Forward-biased Degenerative N-type and degenerative p-type semiconductors are used in tunnel diodes. Tunnel diodes are used in microwave electronic devices and circuits 22 / 31 Category: Electronics basics 22. Which type of semiconductor is used in Tunnel Diode? Degenerated semiconductor Extrinsic semiconductor Elemental semiconductor Compound semiconducto 23 / 31 Category: Electronics basics 23. What is the color code for a 220 5% resistor? Orange, Orange, Black, Gold Red, Red, Black, Gold Red, Red, Brown, Silver Red, Red, Brown, Gold 24 / 31 Category: Electronics basics 24. Which of the following semiconductor is mostly used to construct electronic circuits? Selenium Tin Silicon Germanium 25 / 31 Category: Electronics basics 25. Forbidden Energy gap (EG) of a semiconductor in electronic devices depends on which of the following factors? Interatomic distance Recombination and Generation Electron affinity Material constant 26 / 31 Category: Electronics basics 26. 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 27 / 31 Category: Electronics basics 27. 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 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. 28 / 31 Category: Electronics basics 28. Mass action law is not valid for which type of semiconductors in electronic devices? Elemental Compensated Compound Degenerative P-N junction diodes have two modes of operations i.e. forward and reverse bias. 29 / 31 Category: Electronics basics 29. 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 30 / 31 Category: Electronics basics 30. A voltmeter is used: in parallel with the circuit to measure current to measure coulombs in series with the circuit 31 / 31 Category: Electronics basics 31. Which of the following is not a physical component of an electronic circuit? Temperature Diode Capacitor Inductor Your score is LinkedIn Facebook 0% Restart quiz Exit Anonymous feedback Thank you Send feedback Share this