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, All segments must be on F must be on G must be off C must be lighted 2 / 31 Category: Electronics basics A blown-fuse indicator uses a Constant-current diode Light-emitting diode Zener diode Back diode 3 / 31 Category: Electronics basics One coulomb passing a point in one second is one ampere ohm charge volt 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 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 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. 6 / 31 Category: Electronics basics What type of semiconductor is used in LED electronic circuits? Intrinsic semiconductor Compound semiconductor Compensated semiconductor Degenerated semiconductor 7 / 31 Category: Electronics basics For a low voltage rectification: None Two diode full-wave rectifier is suitable Bridge rectifier is suitable Both bridge and full-wave rectifier are suitable 8 / 31 Category: Electronics basics A photodiode is normally Emitting light Neither forward- nor reverse biased Forward-biased Reverse-biased 9 / 31 Category: Electronics basics The term used to designate electrical pressure is voltage conductance voltage resistance 10 / 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 11 / 31 Category: Electronics basics Which of the following semiconductor is mostly used to construct electronic circuits? Germanium Silicon Selenium Tin 12 / 31 Category: Electronics basics f the depletion layer gets wider, the capacitance Stays the same is variable Decreases increases 13 / 31 Category: Electronics basics A voltmeter is used: in parallel with the circuit to measure coulombs in series with the circuit to measure current 14 / 31 Category: Semiconductor diode (PN junction) Which type of diode is work as a Variable Capacitor? Varactor Diode Photo diode Tunnel Diode LED 15 / 31 Category: Electronics basics Which of the following has a negative-resistance region? Optocoupler Schottky diode Step-recovery diode Tunnel diode 16 / 31 Category: Electronics basics In which of the following region does BJT act as the amplifier electronic device? Reverse saturation Active Cut-off Saturation 17 / 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 18 / 31 Category: Electronics basics Current is considered as the movement of nuclei protons charge electrons 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. 19 / 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 20 / 31 Category: Electronics basics When the light increases, the reverse minority carrier current in a photodiode Increases Is unaffected Decreases Reverses direction Degenerative N-type and degenerative p-type semiconductors are used in tunnel diodes. Tunnel diodes are used in microwave electronic devices and circuits 21 / 31 Category: Electronics basics Which type of semiconductor is used in Tunnel Diode? Compound semiconducto Extrinsic semiconductor Degenerated semiconductor Elemental semiconductor P-N junction diodes have two modes of operations i.e. forward and reverse bias. 22 / 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 diffusion capacitance at high-frequency AC voltage They have three modes of operations They can act as ON-OFF switches 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 Which of the following is the correct order of turn-off times? BJT < MOSFET < IGBT < SCR MOSFET < BJT < IGBT < SCR SCR < BJT < IGBT < MOSFET MOSFET < IGBT < BJT < 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. 25 / 31 Category: Electronics basics The varactor is usually Unbiased Reverse-biased Operated in the breakdown region Forward-biased 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. 26 / 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 27 / 31 Category: Electronics basics Which of the following is not a physical component of an electronic circuit? Inductor Capacitor Temperature Diode 28 / 31 Category: Electronics basics An example of potential energy is a moving vehicle a battery tea-kettle steam the sun 29 / 31 Category: Electronics basics For typical operation, you need to use reverse bias with a Varactor Zener diode Photodiode All of the above 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. 30 / 31 Category: Electronics basics Mass action law is not valid for which type of semiconductors in electronic devices? Compensated Degenerative Elemental Compound 31 / 31 Category: Electronics basics Which resistive component is designed to be temperature sensitive? Thermistor Potentiometer Rheostat Photoconductive cell Your score is LinkedIn Facebook 0% Restart quiz Exit Anonymous feedback Thank you Send feedback Spread the love
