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 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. 1 / 31 Category: Electronics basics Which of the following is correct about photodiode electronic devices? No external voltage is applied Electron-hole pairs are generated by impurity injection in depletion layer connected in reverse bias It is a photovoltaic cell 2 / 31 Category: Electronics basics Which voltage source converts chemical energy to electrical energy? Solar cell Electrical generator Electronic power supply Battery 3 / 31 Category: Electronics basics For typical operation, you need to use reverse bias with a All of the above Zener diode Varactor Photodiode 4 / 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 5 / 31 Category: Semiconductor diode (PN junction) Which type of diode is work as a Variable Capacitor? LED Tunnel Diode Varactor Diode Photo diode 6 / 31 Category: Electronics basics Which of the following is not a physical component of an electronic circuit? Temperature Inductor Diode Capacitor 7 / 31 Category: Electronics basics In which of the following region does BJT act as the amplifier electronic device? Saturation Cut-off Reverse saturation Active 8 / 31 Category: Electronics basics The term used to designate electrical pressure is conductance voltage voltage resistance 9 / 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. 10 / 31 Category: Electronics basics A blown-fuse indicator uses a Back diode Constant-current diode Zener diode Light-emitting diode 11 / 31 Category: Electronics basics An example of potential energy is tea-kettle steam the sun a battery a moving vehicle 12 / 31 Category: Electronics basics The varactor is usually Reverse-biased Forward-biased Unbiased Operated in the breakdown region Degenerative N-type and degenerative p-type semiconductors are used in tunnel diodes. Tunnel diodes are used in microwave electronic devices and circuits 13 / 31 Category: Electronics basics Which type of semiconductor is used in Tunnel Diode? Extrinsic semiconductor Degenerated semiconductor Elemental semiconductor Compound semiconducto 14 / 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 Material constant Interatomic distance 15 / 31 Category: Electronics basics Which of the following has a negative-resistance region? Step-recovery diode Schottky diode Tunnel diode Optocoupler 16 / 31 Category: Electronics basics A voltmeter is used: to measure current to measure coulombs in parallel with the circuit in series with the circuit 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? Compound semiconductor Intrinsic semiconductor Compensated semiconductor Degenerated semiconductor 18 / 31 Category: Electronics basics Which of the following semiconductor is mostly used to construct electronic circuits? Tin Germanium Silicon Selenium 19 / 31 Category: Electronics basics f the depletion layer gets wider, the capacitance increases Stays the same Decreases is variable 20 / 31 Category: Electronics basics Which resistive component is designed to be temperature sensitive? Rheostat Photoconductive cell Thermistor Potentiometer 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. 21 / 31 Category: Electronics basics Which of the following is wrong about solar cell electronic devices? No external voltage is applied It is a photovoltaic cell Solar cell responsivity is directly proportional to the wavelength of light It produces dark current 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 can act as ON-OFF switches They have dynamic resistance at low-frequency AC voltage They have three modes of operations They have diffusion capacitance at high-frequency AC voltage 23 / 31 Category: Electronics basics Current is considered as the movement of nuclei charge electrons protons 24 / 31 Category: Electronics basics A photodiode is normally Reverse-biased Neither forward- nor reverse biased Forward-biased Emitting light 25 / 31 Category: Electronics basics What is the color code for a 220 5% resistor? Red, Red, Brown, Silver Orange, Orange, Black, Gold Red, Red, Brown, Gold Red, Red, Black, Gold 26 / 31 Category: Electronics basics One coulomb passing a point in one second is one ampere charge ohm volt 27 / 31 Category: Electronics basics When the light increases, the reverse minority carrier current in a photodiode Decreases Increases Is unaffected 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. 28 / 31 Category: Electronics basics Mass action law is not valid for which type of semiconductors in electronic devices? Compound Compensated Degenerative Elemental 29 / 31 Category: Electronics basics For a low voltage rectification: None Both bridge and full-wave rectifier are suitable Bridge rectifier is suitable Two diode full-wave rectifier is suitable 30 / 31 Category: Electronics basics Which of the following is not an electronic device? A computer A mobile A magnifying glass A keyboard 31 / 31 Category: Electronics basics To display the digit 8 in a seven-segment indicator, C must be lighted All segments must be on G must be off F must be on Your score is LinkedIn Facebook 0% Restart quiz Exit Anonymous feedback Thank you Send feedback Spread the love
