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