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 Current is considered as the movement of electrons nuclei protons charge 2 / 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 lightly doped It is used in forward bias 3 / 31 Category: Electronics basics The varactor is usually Forward-biased Reverse-biased Unbiased Operated in the breakdown region 4 / 31 Category: Electronics basics A voltmeter is used: in parallel with the circuit to measure coulombs in series with the circuit to measure current 5 / 31 Category: Electronics basics f the depletion layer gets wider, the capacitance Stays the same Decreases is variable increases 6 / 31 Category: Electronics basics An example of potential energy is tea-kettle steam a moving vehicle the sun a battery 7 / 31 Category: Electronics basics A blown-fuse indicator uses a Light-emitting diode Back diode Constant-current diode Zener diode 8 / 31 Category: Electronics basics Which of the following has a negative-resistance region? Optocoupler Schottky diode Tunnel diode Step-recovery diode 9 / 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 10 / 31 Category: Electronics basics Which resistive component is designed to be temperature sensitive? Potentiometer Thermistor Photoconductive cell Rheostat 11 / 31 Category: Semiconductor diode (PN junction) Which type of diode is work as a Variable Capacitor? Varactor Diode Tunnel Diode LED Photo diode 12 / 31 Category: Electronics basics A photodiode is normally Emitting light Forward-biased Neither forward- nor reverse biased Reverse-biased 13 / 31 Category: Electronics basics The term used to designate electrical pressure is voltage conductance voltage resistance 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. 14 / 31 Category: Electronics basics Mass action law is not valid for which type of semiconductors in electronic devices? Compound Elemental Degenerative Compensated 15 / 31 Category: Electronics basics Which of the following semiconductor is mostly used to construct electronic circuits? Tin Selenium Silicon Germanium 16 / 31 Category: Electronics basics Which voltage source converts chemical energy to electrical energy? Solar cell Electrical generator Electronic power supply Battery 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. 17 / 31 Category: Electronics basics What type of semiconductor is used in LED electronic circuits? Intrinsic semiconductor Compound semiconductor Degenerated semiconductor Compensated semiconductor 18 / 31 Category: Electronics basics Forbidden Energy gap (EG) of a semiconductor in electronic devices depends on which of the following factors? Recombination and Generation Electron affinity Material constant Interatomic distance Degenerative N-type and degenerative p-type semiconductors are used in tunnel diodes. Tunnel diodes are used in microwave electronic devices and circuits 19 / 31 Category: Electronics basics Which type of semiconductor is used in Tunnel Diode? Degenerated semiconductor Compound semiconducto Extrinsic semiconductor Elemental semiconductor 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. 20 / 31 Category: Electronics basics Which of the following is wrong about solar cell electronic devices? It is a photovoltaic cell It produces dark current No external voltage is applied Solar cell responsivity is directly proportional to the wavelength of light 21 / 31 Category: Electronics basics Which of the following is not an electronic device? A keyboard A computer A magnifying glass A mobile 22 / 31 Category: Electronics basics To display the digit 8 in a seven-segment indicator, F must be on All segments must be on C must be lighted G must be off 23 / 31 Category: Electronics basics One coulomb passing a point in one second is one charge ohm ampere volt 24 / 31 Category: Electronics basics When the light increases, the reverse minority carrier current in a photodiode Is unaffected Reverses direction Decreases Increases 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. 25 / 31 Category: Electronics basics Which of the following is correct about photodiode electronic devices? connected in reverse bias It is a photovoltaic cell Electron-hole pairs are generated by impurity injection in depletion layer No external voltage is applied 26 / 31 Category: Electronics basics For typical operation, you need to use reverse bias with a Varactor Zener diode All of the above Photodiode 27 / 31 Category: Electronics basics For a low voltage rectification: Two diode full-wave rectifier is suitable Both bridge and full-wave rectifier are suitable None Bridge rectifier is suitable P-N junction diodes have two modes of operations i.e. forward and reverse bias. 28 / 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 can act as ON-OFF switches They have dynamic resistance at low-frequency AC voltage They have three modes of operations 29 / 31 Category: Electronics basics Which of the following is not a physical component of an electronic circuit? Diode Capacitor Inductor Temperature 30 / 31 Category: Electronics basics Which of the following is the correct order of turn-off times? SCR < BJT < IGBT < MOSFET BJT < MOSFET < IGBT < SCR MOSFET < IGBT < BJT < SCR MOSFET < BJT < 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. 31 / 31 Category: Electronics basics In which of the following region does BJT act as the amplifier electronic device? 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