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. For typical operation, you need to use reverse bias with a Zener diode Photodiode All of the above Varactor 2 / 31 Category: Electronics basics 2. The varactor is usually Reverse-biased Unbiased Operated in the breakdown region Forward-biased 3 / 31 Category: Electronics basics 3. Current is considered as the movement of protons charge nuclei electrons Degenerative N-type and degenerative p-type semiconductors are used in tunnel diodes. Tunnel diodes are used in microwave electronic devices and circuits 4 / 31 Category: Electronics basics 4. Which type of semiconductor is used in Tunnel Diode? Degenerated semiconductor Elemental semiconductor Extrinsic semiconductor Compound semiconducto 5 / 31 Category: Electronics basics 5. 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 6 / 31 Category: Electronics basics 6. To display the digit 8 in a seven-segment indicator, C must be lighted G must be off All segments must be on F must be on 7 / 31 Category: Electronics basics 7. Which of the following is not an electronic device? A computer A mobile A keyboard A magnifying glass 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. 8 / 31 Category: Electronics basics 8. Mass action law is not valid for which type of semiconductors in electronic devices? Compound Elemental Compensated Degenerative 9 / 31 Category: Electronics basics 9. Which of the following semiconductor is mostly used to construct electronic circuits? Tin Germanium Selenium Silicon 10 / 31 Category: Electronics basics 10. In which of the following region does BJT act as the amplifier electronic device? Cut-off Active Reverse saturation Saturation 11 / 31 Category: Semiconductor diode (PN junction) 11. Which type of diode is work as a Variable Capacitor? Photo diode Varactor Diode LED Tunnel Diode 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. 12 / 31 Category: Electronics basics 12. Which of the following is wrong about solar cell electronic devices? Solar cell responsivity is directly proportional to the wavelength of light It produces dark current No external voltage is applied It is a photovoltaic cell 13 / 31 Category: Electronics basics 13. Which of the following has a negative-resistance region? Schottky diode Step-recovery diode Optocoupler Tunnel diode 14 / 31 Category: Electronics basics 14. f the depletion layer gets wider, the capacitance Decreases is variable Stays the same increases 15 / 31 Category: Electronics basics 15. 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 16 / 31 Category: Electronics basics 16. One coulomb passing a point in one second is one ampere charge volt ohm 17 / 31 Category: Electronics basics 17. When the light increases, the reverse minority carrier current in a photodiode Reverses direction Decreases Is unaffected Increases 18 / 31 Category: Electronics basics 18. Which resistive component is designed to be temperature sensitive? Thermistor Photoconductive cell Potentiometer Rheostat P-N junction diodes have two modes of operations i.e. forward and reverse bias. 19 / 31 Category: Electronics basics 19. 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 diffusion capacitance at high-frequency AC voltage They can act as ON-OFF switches They have three modes of operations 20 / 31 Category: Electronics basics 20. Which of the following is true about Zener diode? It is used in forward bias It is used in forward bias It is mostly used in voltage regulator electronic circuits It is lightly doped 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. 21 / 31 Category: Electronics basics 21. Which of the following is correct about photodiode electronic devices? No external voltage is applied It is a photovoltaic cell connected in reverse bias Electron-hole pairs are generated by impurity injection in depletion layer 22 / 31 Category: Electronics basics 22. Which of the following is not a physical component of an electronic circuit? Inductor Temperature Diode Capacitor 23 / 31 Category: Electronics basics 23. 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. 24 / 31 Category: Electronics basics 24. Which voltage source converts chemical energy to electrical energy? Solar cell Battery Electrical generator Electronic power supply 25 / 31 Category: Electronics basics 25. The term used to designate electrical pressure is conductance voltage voltage resistance 26 / 31 Category: Electronics basics 26. A photodiode is normally Reverse-biased Neither forward- nor reverse biased Forward-biased Emitting light 27 / 31 Category: Electronics basics 27. An example of potential energy is a battery the sun tea-kettle steam a moving vehicle 28 / 31 Category: Electronics basics 28. A voltmeter is used: in parallel with the circuit to measure coulombs to measure current in series with the circuit 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. 29 / 31 Category: Electronics basics 29. What type of semiconductor is used in LED electronic circuits? Compound semiconductor Compensated semiconductor Degenerated semiconductor Intrinsic semiconductor 30 / 31 Category: Electronics basics 30. A blown-fuse indicator uses a Light-emitting diode Back diode Zener diode Constant-current diode 31 / 31 Category: Electronics basics 31. Forbidden Energy gap (EG) of a semiconductor in electronic devices depends on which of the following factors? Material constant Recombination and Generation Interatomic distance Electron affinity Your score is LinkedIn Facebook 0% Restart quiz Exit Anonymous feedback Thank you Send feedback Spread the love
