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 is not an electronic device? A keyboard A computer A mobile A magnifying glass 2 / 31 Category: Semiconductor diode (PN junction) Which type of diode is work as a Variable Capacitor? Tunnel Diode Photo diode Varactor Diode LED 3 / 31 Category: Electronics basics Which of the following has a negative-resistance region? Optocoupler Tunnel diode Step-recovery diode Schottky diode 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 Which type of semiconductor is used in Tunnel Diode? Compound semiconducto Elemental semiconductor Degenerated semiconductor Extrinsic semiconductor 5 / 31 Category: Electronics basics Which resistive component is designed to be temperature sensitive? Photoconductive cell Thermistor Potentiometer Rheostat 6 / 31 Category: Electronics basics For a low voltage rectification: None Both bridge and full-wave rectifier are suitable Two diode full-wave rectifier is suitable Bridge rectifier is suitable 7 / 31 Category: Electronics basics To display the digit 8 in a seven-segment indicator, C must be lighted All segments must be on F must be on G must be off 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 Mass action law is not valid for which type of semiconductors in electronic devices? Elemental Degenerative Compound Compensated P-N junction diodes have two modes of operations i.e. forward and reverse bias. 9 / 31 Category: Electronics basics 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 have three modes of operations They have dynamic resistance at low-frequency AC voltage They can act as ON-OFF switches 10 / 31 Category: Electronics basics A voltmeter is used: to measure current in parallel with the circuit to measure coulombs in series with the circuit 11 / 31 Category: Electronics basics The term used to designate electrical pressure is voltage resistance conductance voltage 12 / 31 Category: Electronics basics What is the color code for a 220 5% resistor? Red, Red, Brown, Gold Red, Red, Black, Gold Orange, Orange, Black, Gold Red, Red, Brown, Silver 13 / 31 Category: Electronics basics The varactor is usually Forward-biased Unbiased Reverse-biased Operated in the breakdown region 14 / 31 Category: Electronics basics For typical operation, you need to use reverse bias with a Varactor All of the above Zener diode Photodiode 15 / 31 Category: Electronics basics A photodiode is normally Emitting light Neither forward- nor reverse biased Forward-biased Reverse-biased 16 / 31 Category: Electronics basics Which of the following is not a physical component of an electronic circuit? Inductor Temperature Diode Capacitor 17 / 31 Category: Electronics basics Forbidden Energy gap (EG) of a semiconductor in electronic devices depends on which of the following factors? Recombination and Generation Material constant Electron affinity Interatomic distance 18 / 31 Category: Electronics basics One coulomb passing a point in one second is one ohm volt ampere charge 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. 19 / 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 20 / 31 Category: Electronics basics In which of the following region does BJT act as the amplifier electronic device? Reverse saturation Active Cut-off Saturation 21 / 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 mostly used in voltage regulator electronic circuits It is lightly doped 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 What type of semiconductor is used in LED electronic circuits? Compensated semiconductor Degenerated semiconductor Intrinsic semiconductor Compound semiconductor 23 / 31 Category: Electronics basics Which voltage source converts chemical energy to electrical energy? Electrical generator Battery Solar cell Electronic power supply 24 / 31 Category: Electronics basics Which of the following semiconductor is mostly used to construct electronic circuits? Silicon Selenium Germanium Tin 25 / 31 Category: Electronics basics f the depletion layer gets wider, the capacitance Stays the same increases Decreases is variable 26 / 31 Category: Electronics basics An example of potential energy is a moving vehicle the sun tea-kettle steam a battery 27 / 31 Category: Electronics basics Current is considered as the movement of charge electrons protons nuclei 28 / 31 Category: Electronics basics A blown-fuse indicator uses a Light-emitting diode Zener diode Constant-current diode Back diode 29 / 31 Category: Electronics basics When the light increases, the reverse minority carrier current in a photodiode Decreases Reverses direction Is unaffected Increases 30 / 31 Category: Electronics basics Which of the following is the correct order of turn-off times? SCR < BJT < IGBT < MOSFET MOSFET < BJT < IGBT < SCR 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. 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. 31 / 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 Your score is LinkedIn Facebook 0% Restart quiz Exit Anonymous feedback Thank you Send feedback Spread the love
