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