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 Forbidden Energy gap (EG) of a semiconductor in electronic devices depends on which of the following factors? Material constant Electron affinity Interatomic distance Recombination and Generation 2 / 31 Category: Electronics basics One coulomb passing a point in one second is one charge volt ohm ampere 3 / 31 Category: Electronics basics A blown-fuse indicator uses a Back diode Zener diode Light-emitting diode Constant-current diode 4 / 31 Category: Electronics basics Which of the following is not a physical component of an electronic circuit? Inductor Temperature Diode Capacitor 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. 5 / 31 Category: Electronics basics Which of the following is correct about photodiode electronic devices? It is a photovoltaic cell No external voltage is applied Electron-hole pairs are generated by impurity injection in depletion layer connected in reverse bias P-N junction diodes have two modes of operations i.e. forward and reverse bias. 6 / 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 can act as ON-OFF switches They have dynamic resistance at low-frequency AC voltage 7 / 31 Category: Electronics basics A photodiode is normally Neither forward- nor reverse biased Emitting light Reverse-biased Forward-biased 8 / 31 Category: Electronics basics Which of the following semiconductor is mostly used to construct electronic circuits? Tin Germanium Selenium Silicon 9 / 31 Category: Electronics basics Which of the following is not an electronic device? A computer A keyboard A magnifying glass A mobile 10 / 31 Category: Electronics basics Which of the following is true about Zener diode? It is mostly used in voltage regulator electronic circuits It is used in forward bias It is used in forward bias It is lightly doped 11 / 31 Category: Electronics basics For a low voltage rectification: None Two diode full-wave rectifier is suitable Both bridge and full-wave rectifier are suitable Bridge 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. 12 / 31 Category: Electronics basics Which of the following is wrong about solar cell electronic devices? No external voltage is applied It produces dark current Solar cell responsivity is directly proportional to the wavelength of light It is a photovoltaic cell 13 / 31 Category: Electronics basics Which resistive component is designed to be temperature sensitive? Potentiometer Thermistor Rheostat Photoconductive cell 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? Compensated semiconductor Compound semiconductor Intrinsic semiconductor Degenerated semiconductor 15 / 31 Category: Electronics basics For typical operation, you need to use reverse bias with a All of the above Photodiode Zener diode Varactor Degenerative N-type and degenerative p-type semiconductors are used in tunnel diodes. Tunnel diodes are used in microwave electronic devices and circuits 16 / 31 Category: Electronics basics Which type of semiconductor is used in Tunnel Diode? Degenerated semiconductor Extrinsic semiconductor Compound semiconducto Elemental semiconductor 17 / 31 Category: Electronics basics To display the digit 8 in a seven-segment indicator, G must be off C must be lighted All segments must be on F must be on 18 / 31 Category: Electronics basics When the light increases, the reverse minority carrier current in a photodiode Is unaffected Increases Decreases Reverses direction 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. 19 / 31 Category: Electronics basics Mass action law is not valid for which type of semiconductors in electronic devices? Compound Compensated Degenerative Elemental 20 / 31 Category: Electronics basics f the depletion layer gets wider, the capacitance is variable Stays the same Decreases increases 21 / 31 Category: Electronics basics What is the color code for a 220 5% resistor? Red, Red, Black, Gold Red, Red, Brown, Gold Red, Red, Brown, Silver Orange, Orange, Black, Gold 22 / 31 Category: Electronics basics An example of potential energy is tea-kettle steam a battery a moving vehicle the sun 23 / 31 Category: Electronics basics Which voltage source converts chemical energy to electrical energy? Electronic power supply Battery Electrical generator Solar cell 24 / 31 Category: Electronics basics The term used to designate electrical pressure is voltage conductance resistance voltage 25 / 31 Category: Electronics basics In which of the following region does BJT act as the amplifier electronic device? Reverse saturation Saturation Active Cut-off 26 / 31 Category: Electronics basics A voltmeter is used: in parallel with the circuit in series with the circuit to measure current to measure coulombs 27 / 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. 28 / 31 Category: Electronics basics Current is considered as the movement of nuclei electrons charge protons 29 / 31 Category: Semiconductor diode (PN junction) Which type of diode is work as a Variable Capacitor? LED Photo diode Varactor Diode Tunnel Diode 30 / 31 Category: Electronics basics The varactor is usually Unbiased Reverse-biased Operated in the breakdown region Forward-biased 31 / 31 Category: Electronics basics Which of the following has a negative-resistance region? Schottky diode Tunnel diode Step-recovery diode Optocoupler Your score is LinkedIn Facebook 0% Restart quiz Exit Anonymous feedback Thank you Send feedback Spread the love
