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