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