Electric Circuit Question & Answers October 4, 2021 By Wat Electrical This article lists 100 Electric Circuit MCQs for engineering students. All the Electric Circuit Questions & Answers given below includes solution and link wherever possible to the relevant topic. An electric circuit is a loop containing electric components that interact with each other to drive the output load connected. This circuit consists of active and passive components like current source, voltage sources, AC or DC sources that generate power to dependent components such as resistors, capacitors, inductors, and more. This combination of electrical components forms a device oscilloscope, motors, batteries, or specific components IC’s, rectifiers, diodes, etc. These electrical components can be connected in series or in parallel. In a serial connection, the components are connected in such a way where the output of one terminal is given as input to another terminal, and in parallel connection, the components are connected one above the other thus, varying in output result. A few of the benefits provided by an electrical circuit include reliability, maximum efficiency generated, and more reliability and they limit in terms of area, power dissipation, health hazard, and breakdowns. The application of an electrical circuit includes motors, TV, electronic appliances, cars, automobiles, etc. 1). An electric circuit operates in ___ type of connectivity configuration? Open Short Disconnected All the above Hint 2). Which of the following are the standard components of an electric circuit? Voltage and current source Passive components Connecting wires All the above Hint Read more about RLC 3). An electrical circuit components are classified into ___ types? 2 3 4 5 Hint 4). Which of the following electrical circuit components operate using dynamic parts? Active Passive Independent Electro mechanical Hint 5). Which of the following are the examples of electro mechanical components? Resistors Current source Motors All the above Hint Read more about Motors 6). How many types of independent power source phases are used in an electric circuit? 2 3 4 5 Hint 7). A resistor has minimum of __ number of terminals? 2 3 45 Hint 8). Which of the following is the dependent sources of an current type amplifier? Current controlled type current based source Current controlled type voltage based source Voltage controlled type current based source Voltage controlled type voltage based source Hint 9). Which of the following is the dependent sources of an trans-resistance type amplifier? Current controlled type current based source Current controlled type voltage based source Voltage controlled type current based source Voltage controlled type voltage based source Hint 10). Which of the following is the dependent sources of an trans-conductance type amplifier? Current controlled type current based source Current controlled type voltage based source Voltage controlled type current based source Voltage controlled type voltage based source Hint 11). Which of the following is the dependent sources of an voltage type amplifier? Current controlled type current based source Current controlled type voltage based source Voltage controlled type current based source Voltage controlled type voltage based source Hint 12). An undesirable of disturbances in a signal that effects the quality of signal is called_______ Noise Gain Bandwidth Both a and c Hint 13). Which of the following is defined as higher value of rate of change of output is _____ Gain Slew rate Dynamic rage All the above Hint 14). Which of the following is the SI units of slew rate? Volts Volts / seconds Amperes per seconds Both b and c Hint 15). A radio type receiver is also called as_____ Radio receiver Wireless receiver Radio All the above Hint 16). What is the form of input applied to an radio type receiver? Air Radio UV X-ray Hint 17). What is the form of output obtained in an radio type receiver? Electric 0’s and 1’s Digital All the above Hint 18). Which of the following main component is used in radio type receiver? Resistor Antenna Capacitor Battery Hint 19). Which of the following component of a radio type receiver removes signal noise? Antenna Filter Battery Resistor Hint Read more about filter 20). Which of the following are the applications of a radio receiver? Mobile phone Tv Radio All the above Hint Electric Circuit Questions and Answers 21). An electro mechanical circuit depends on __ properties? Electrical Mechanical Chemical Both a and b Hint 22). Which of the following are the applications of an electromechanical component? Motors Transformers Windmills All the above Hint 23). Electro mechanical devices works similar to ____ component? Switch Relays Resistor Both a and b Hint 24). An electronic device that generates periodic waves is called _____ Amplifier Oscillator Rectifier Both a and b Hint 25). Which of the following is the source conversion of an oscillator? AC to DC AC to AC DC to AC DC to DC Hint 26). Which of the following are the applications of an oscillator? Clock Calculators Computers All the above Hint 27). Which of the following is the frequency of operation of a low frequency type oscillator? 20Hz 10Hz 30Hz 40Hz Hint 28). Which of the following is the frequency of operation of audio frequency type oscillator? 16-20Hz 10-16Hz 30Hz 40Hz Hint 29). Which of the following is the frequency of operation of a audio frequency type oscillator? 20Hz 100KHz-100GHz 30Hz 40Hz Hint Read more about inverter 30). An oscillator generating AC power supply using DC source is called ____ Inverter Resistor Capacitor All the above Hint 31). An oscillator’s are basically classified into _____ 2 3 4 5 Hint 32). Aperiodic type oscillators are also called as_____ Non linear oscillator Linear type oscillator Relaxation type oscillator Both a and c Hint 33). Which of the following is the frequency of operation of an crystal oscillator? 32kHz to 150 MHz 31KHz to 100MHz 100Khz to 120Mhz None of the above Hint 34). Which of the following are the applications of an relaxation type oscillator? Square wave oscillator Sawtooth oscillator Triangle oscillator All the above Hint 35). Which of the following is the energy component of oscillator? Capacitor Inductor Relay All the above Hint Read more about relay 36). Which of the following component in oscillator stores the charge for short time? Capacitor Inductor Relay All the above Hint 37). Which of the following is the application of square wave type relaxation oscillator? Timers Counters ADC Both a and b Hint 38). A tunnel diode is also called as______ Esaki diode Zener diode PN diode All the above Hint 39). The resistance value of tunnel diode is ______polarity Positive Negative Neutral Zero Hint Electric Circuit Important MCQ's with Hints 40). A tunnel type diode works on ____ principle? Tunnel effect Quantum mechanics Oscillating Both a and b Hint 41). How many terminals do tunnel diode have? 1 2 3 4 Hint 42). Who invented tunnel diode? Leo Esaki Uriko Kurose Takashi Suzuki All the above Hint 43). Tunnel diode has ___ quantity of PN impurities? Heavy Moderate Zero Equal Hint 44). Which of the following element is used in tunnel diode? Germanium Silicon Gallium All the above Hint 45). Which of the following is the application of battery in electrical circuit? Flash lights Mobiles Motors All the above Hint 46). Batteries are classified in to ___ types? 5 2 3 4 47). Which of the following type of battery can be recharged when charge becomes zero? Primary Secondary Both a and b Primary cells Hint 48). Which of the following type of battery cannot be recharged when charge becomes zero? Primary Secondary Both a and b Secondary cells Hint 49). Which of the following are the applications of primary type battery? Telegraph Inverters Remote cells Both a and c Hint 50). Which of the following are the applications of primary cells? Zinc – carbon battery Alkaline battery Gel battery Both a and b Hint 51). A secondary battery is also called as ___ Secondary cell Rechargeable battery Non rechargeable cell Both a and b Hint 52). A primary battery is also called as _____ Primary cell Non rechargeable battery Rechargeable cell Both a and b Hint 53). Which of the following are the applications of rechargeable batteries? Lead acid battery Gel batteries Absorbed glass mat batteries All the above Hint 54). Which of the following is the capacity of lead acid battery? 10Ah 20Ah 30Ah 40Ah Hint 55). Which of the following are the types of cells? Galvanic Flow Fuel All the above Hint 56). Which of the following are the types of wet cell? Nickle cadmium cell Lead acid cell Grove cell All the above Hint 57). Which of the following are the types of dry cells? Zinc-carbon cell Leclanche cell Zinc manganese dioxide cell All the above Hint 58). What is the voltage of leclanche cell? 1.5V 1.8V 1V 2V Hint 59). The value of temperature operated by molten salt type cell is ___ High Low Zero Moderate Hint 60). Circuit analysis in an electrical circuit can be performed using ___? Linear Non linear Both a and b None of the above Hint 61). A electrical network comprises of _____ Active elements Passive elements Sources All the above Hint 62). A components that joins 2 nodes in circuit analysis is called________ Node Branch Mesh Port Hint 63). A point in an electric circuit that contains multiple components connected at a point is called____ Node Branch Mesh Port Hint 64). A group of nodes in a network connected together to form a loop, so that no other loop exists is called____ Node Branch Mesh Port Hint 65). A pair of terminals on input and on the output of an electrical component where current flows into and out of is called___ Node Branch Mesh Port Hint 66). How many configurations can an electrical circuit be analyzed? 2 3 4 1 Hint 67). In how many ways can a electrical components connected? 2 3 4 1 Hint 68). What is the formula for serial impedance? Z1+Z2+Z3+……+Zn 1/Z1+1/Z2+1/Z3+……….+1/Zn 1+Z1+Z2+….Zn 1/ Z1+Z2+….Zn Hint 69). What is the formula for parallel impedance? Z1+Z2+Z3+……+Zn 1/Z1+1/Z2+1/Z3+……….+1/Zn 1+Z1+Z2+….Zn 1/ Z1+Z2+….Zn Hint 70). What is the units of resistance? Ohms Farads Joules Colum’s Hint Electric Circuit MCQ's for Interviews 71). What is the units of capacitance? Ohms Farads Joules Colum’s Hint 72). What is the units of Energy? Ohms Farads Joules Colum’s Hint 73). What is the units of Charge? Ohms Farads Joules Colum’s Hint 74). What is the formula of ohms law? V=IR V=I/R R=VI None of the above Hint Read more about ohms law 75). Which of the following are the applications of electric circuit? Motor TV Batteries All the above Hint 76). Which of the following are linear elements? Resistor Capacitor Inductor All the above Hint 77). Which of the following are examples of non linear elements? Diodes Transistors Resistors Both a and b Hint 78). Which of the following are the examples of bilateral elements? Voltage source Current source Capacitance All the above Hint 79). Which of the following are the examples of unilateral elements? Rectifiers Silicon diode Voltage source All the above Hint 80). If VI relationship is equal and current flows in two direction is called ____ element? Uni lateral Bilateral Linear Non linear Hint 81). If VI relationship is not equal and current flows in one direction is called ____ element? Uni lateral Bilateral Linear Non linear Hint 82). Which of the following are the characteristics of lumped elements? Small size Electrically separated Continuous actions All the above Hint 83). A resistance ___ the flow of current? Allows Blocks Opposes Prevents Hint 84). Ohms law defines relation between ____ Current and voltage Current and resistance Current and load Current, resistance to voltage Hint 85). What is the formula of current I, conductance G and voltage V? i=GV i=G/v i=V/G i=G Hint 86). An inductance opposes ___ component of current through a conductor? Magnitude Direction Amplitude Both a and b Hint 87). Which of the following are the components of a capacitor? Parallel plates Dielectric materials Terminals All the above Hint 88). Which of the following is the formula of q-charge, C-capacitance and voltage-v? q=CV q=C/V q=V/C q=V Hint 89). If the voltage across capacitor is maintained constant what is the value of current in capacitance? Zero 1 Infinity Constant Hint 90). Which of the following is the formula of Kirchhoff’s current law when i1,i2 are incoming currents and i3, i4 are output currents? i1+i2=i3+i4 i1+i2+i3+i4=0 i1+i2-i3+i4=0 i1+i2+i3-i4=0 Hint 91). Kirchhoff’s laws are classified in to how many types? 2 3 4 5 Hint 92). When electrical components such as RLC are complemented with lines of segment in a network the then the topology is called_____ Graph Node Loop Mesh Hint 93). In graph voltage sources are ____ Short circuited Open circuited Closed Both a and c Hint 94). In graph current sources are _____ Short circuited Open circuited Closed Both a and c Hint 95). A twig is also called as ___ Tree branch Mesh Node Loop Hint 96). If the branch that are not a part of tree of a co-tree is called ______ Co-tree Tree Mesh Node Hint 97). Link is also called ____ Branch Node Chord Hint 98). Nodes are represented as ____ during electric circuit representation Dots Dark lines Chords Curves Hint 99). Twigs are represented as ____ during electric circuit representation Dots Dark lines Dotted Curves Hint 100). Links are represented as ____ during electric circuit representation Dots Dark lines Dotted Curves Hint Time's up
