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