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