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 In which of the following region does BJT act as the amplifier electronic device? Reverse saturation Active Saturation Cut-off 2 / 31 Category: Electronics basics Current is considered as the movement of nuclei charge protons electrons 3 / 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 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. 4 / 31 Category: Electronics basics 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 connected in reverse bias No external voltage is applied 5 / 31 Category: Electronics basics A voltmeter is used: to measure current in series with the circuit to measure coulombs in parallel with the circuit 6 / 31 Category: Electronics basics The term used to designate electrical pressure is voltage voltage conductance resistance 7 / 31 Category: Electronics basics When the light increases, the reverse minority carrier current in a photodiode Reverses direction Decreases Is unaffected Increases 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. 8 / 31 Category: Electronics basics Which of the following is wrong about solar cell electronic devices? No external voltage is applied It is a photovoltaic cell Solar cell responsivity is directly proportional to the wavelength of light It produces dark current 9 / 31 Category: Electronics basics Which of the following is not a physical component of an electronic circuit? Diode Temperature Capacitor Inductor 10 / 31 Category: Electronics basics Forbidden Energy gap (EG) of a semiconductor in electronic devices depends on which of the following factors? Interatomic distance Recombination and Generation Material constant Electron affinity 11 / 31 Category: Electronics basics A blown-fuse indicator uses a Back diode Zener diode Constant-current diode Light-emitting diode 12 / 31 Category: Electronics basics One coulomb passing a point in one second is one volt charge ohm ampere 13 / 31 Category: Electronics basics What is the color code for a 220 5% resistor? Red, Red, Brown, Gold Red, Red, Brown, Silver Red, Red, Black, Gold Orange, Orange, Black, Gold 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. 14 / 31 Category: Electronics basics What type of semiconductor is used in LED electronic circuits? Compound semiconductor Intrinsic semiconductor Degenerated semiconductor Compensated semiconductor 15 / 31 Category: Electronics basics Which of the following semiconductor is mostly used to construct electronic circuits? Germanium Silicon Tin Selenium 16 / 31 Category: Electronics basics To display the digit 8 in a seven-segment indicator, F must be on All segments must be on G must be off C must be lighted 17 / 31 Category: Electronics basics Which of the following is not an electronic device? A mobile A computer A magnifying glass A keyboard P-N junction diodes have two modes of operations i.e. forward and reverse bias. 18 / 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 can act as ON-OFF switches They have diffusion capacitance at high-frequency AC voltage They have three modes of operations 19 / 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. 20 / 31 Category: Electronics basics For typical operation, you need to use reverse bias with a Zener diode All of the above Varactor Photodiode 21 / 31 Category: Semiconductor diode (PN junction) Which type of diode is work as a Variable Capacitor? Photo diode Varactor Diode LED Tunnel Diode 22 / 31 Category: Electronics basics The varactor is usually Reverse-biased Forward-biased Operated in the breakdown region Unbiased 23 / 31 Category: Electronics basics Which voltage source converts chemical energy to electrical energy? Electronic power supply Battery Solar cell Electrical generator 24 / 31 Category: Electronics basics An example of potential energy is a battery tea-kettle steam a moving vehicle the sun 25 / 31 Category: Electronics basics Which of the following is true about Zener diode? It is lightly doped It is mostly used in voltage regulator electronic circuits It is used in forward bias 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. 26 / 31 Category: Electronics basics Mass action law is not valid for which type of semiconductors in electronic devices? Degenerative Compound Compensated Elemental 27 / 31 Category: Electronics basics A photodiode is normally Reverse-biased Neither forward- nor reverse biased Emitting light Forward-biased Degenerative N-type and degenerative p-type semiconductors are used in tunnel diodes. Tunnel diodes are used in microwave electronic devices and circuits 28 / 31 Category: Electronics basics Which type of semiconductor is used in Tunnel Diode? Elemental semiconductor Compound semiconducto Degenerated semiconductor Extrinsic semiconductor 29 / 31 Category: Electronics basics f the depletion layer gets wider, the capacitance Stays the same increases is variable Decreases 30 / 31 Category: Electronics basics Which of the following has a negative-resistance region? Schottky diode Tunnel diode Step-recovery diode Optocoupler 31 / 31 Category: Electronics basics Which resistive component is designed to be temperature sensitive? Rheostat Potentiometer Thermistor Photoconductive cell Your score is LinkedIn Facebook 0% Restart quiz Exit Anonymous feedback Thank you Send feedback Spread the love
