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