MCQOPTIONS
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MCQOPTIONS
This section includes 225 Mcqs, each offering curated multiple-choice questions to sharpen your Electronics & Communication Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
Match the following: List I List II A.1.B.2.C.3.D.4. |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-3, B-4, C-2, D-1 |
| C. | A-4, B-3, C-2, D-1 |
| D. | A-3, B-4, C-1, D-2 |
| Answer» C. A-4, B-3, C-2, D-1 | |
| 152. |
Match the following: List I List II A.n Channel JFET1.B.p Channel JFET2.C.Depletion MOSFET3.D.Enhancement MOSFET4. |
| A. | A-4, B-3, C-2, D-1 |
| B. | A-1, B-3, C-4, D-2 |
| C. | A-3, B-4, C-1, D-2 |
| D. | A-2, B-4, C-3, D-1 |
| Answer» D. A-2, B-4, C-3, D-1 | |
| 153. |
Match the following: List I List II A.Ternary1.0, 1, 3B.Quaternary2.0, 1, 2, 3, 4, 5, 6 7, 8, 9, A, BC.Quinary3.0, 1, 2, 3, 4D.Duodecimal4.0, 1, 2 |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-2, B-3, C-4, D-1 |
| C. | A-3, B-1, C-4, D-3 |
| D. | A-4, B-1, C-3, D-2 |
| Answer» E. | |
| 154. |
Match the following: List I (Instruction) List II (Flag's getting affected)A.ORI1.CY resetB.DAA2.CY reset and AC resetC.PCHIL3.S, Z, AC, P, CY flags affected 4.S, S, P are modified 5.No flags affected |
| A. | A-2, B-3, C-5 |
| B. | A-4, B-3, C-5 |
| C. | A-1, B-2, C-3 |
| D. | A-2, B-4, C-1 |
| Answer» C. A-1, B-2, C-3 | |
| 155. |
Match the following: List I List II A.DIAC1.B.TRIAC2.C.SIT3.D.LASCR4. |
| A. | A-4, B-2, C-3, D-1 |
| B. | A-1, B-2, C-3, D-4 |
| C. | A-1, B-4, C-2, D-3 |
| D. | A-3, B-2, C-1, D-4 |
| Answer» D. A-3, B-2, C-1, D-4 | |
| 156. |
Match the following: List I List II A.Television1.Either AM or FM usedB.Radio2.Both AM and FM are usedC.Radar3.PCM is usedD.Data Communication4.Digital system |
| A. | A-4, B-3, C-1, D-2 |
| B. | A-2, B-1, C-3, D-4 |
| C. | A-4, B-1, C-3, D-2 |
| D. | A-2, B-3, C-1, D-4 |
| Answer» E. | |
| 157. |
Match the following: List I List II A.Output of signal generator1.ModulatedB.Error signal from a synchro2.DigitalC.Output of a JK flip flop3.AnalogD.Signal received by radar4.Stoichastic |
| A. | A-1, B-3, C-2, D-4 |
| B. | A-3, B-1, C-2, D-4 |
| C. | A-3, B-1, C-4, D-2 |
| D. | A-1, B-3, C-4, D-2 |
| Answer» C. A-3, B-1, C-4, D-2 | |
| 158. |
Match the following: List I List II A.TV1.1 kHzB.Radio2.3 kHzC.Telephony3.9 kHzD.Telegraphy4.5 MHz |
| A. | A-4, B-1, C-2 |
| B. | A-4, B-3, C-2 |
| C. | A-2, B-1, C-3 |
| D. | A-1, B-2, C-3 |
| Answer» C. A-2, B-1, C-3 | |
| 159. |
Match the following: List I (Location of characteristics roots) List II (System characteristic)A.(- 1 + j), (- 1 - j)1.Marginally stableB.(- 2 + j), (- 2 - j), (2, j) (- 2, j)2.UnstableC.- j, j - 1, 13.Stable |
| A. | A-1, B-2, C-3 |
| B. | A-2, B-3, C-1 |
| C. | A-3, B-1, C-2 |
| D. | A-1, B-3, C-2 |
| Answer» D. A-1, B-3, C-2 | |
| 160. |
Match the following: List I List II A.Silicon1.is trivalentB.Arsenic2.rarely used as semiconductorC.Indium3.is pentavalentD.Germanium4.intrinsic semiconductor |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-4, B-3, C-2, D-1 |
| C. | A-4, B-3, C-1, D-2 |
| D. | A-2, B-1, C-3, D-4 |
| Answer» D. A-2, B-1, C-3, D-4 | |
| 161. |
Match the following: List I List II A.On-off1.steam kettle with different settingsB.Proportional2.ElevatorC.Cascade3.Robot-positioningD.Digital4.Domestic Refrigerator |
| A. | A-4, B-2, C-3, D-1 |
| B. | A-2, B-4, C-1, D-3 |
| C. | A-3, B-1, C-4, D-2 |
| D. | A-4, B-2, C-1, D-3 |
| Answer» E. | |
| 162. |
Match the following: List I (Digital circuit) List II (Circuit type) A.BCD to 7 segment decoder1.sequential circuitB.4-to-1 MUX2.combinational circuitC.4 bit shift register3.neither sequential nor combinational circuit |
| A. | A-2, B-1, C-2, D-1 |
| B. | A-3, B-2, C-1, D-3 |
| C. | A-2, B-2, C-1, D-1 |
| D. | A-3, B-1, C-2, D-3 |
| Answer» D. A-3, B-1, C-2, D-3 | |
| 163. |
Match the following: List I (DOS commands) List II (Meaning) A.ATTRIB1.Displays all directories and subdirectoriesB.SCAN DISK2.Moves files to another directorC.MOVE3.Checks the status of discD.TREE4.Hides a file |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-3, B-4, C-2, D-1 |
| C. | A-2, B-3, C-4, D-1 |
| D. | A-4, B-3, C-2, D-1 |
| Answer» E. | |
| 164. |
Match the following: List I List II A.Zener diode1.B.Tunnel diode2.C.Schottky diode3.D.Diode4. |
| A. | A-1, B-3, C-2, D-4 |
| B. | A-2, B-3, C-1, D-4 |
| C. | A-4, B-3, C-2, D-1 |
| D. | A-3, B-2, C-4, D-1 |
| Answer» E. | |
| 165. |
Match the following: List I (Devices) List II (characteristic) A.BJT1.Voltage controlled negative resistanceB.MOSFET2.High current gainC.Tunnel diode3.Voltage regulationD.Zener diode4.High input impedance |
| A. | A-1, B-4, C-2, D-3 |
| B. | A-2, B-4, C-1, D-3 |
| C. | A-2, B-3, C-1, D-4 |
| D. | A-1, B-3, C-2, D-4 |
| Answer» C. A-2, B-3, C-1, D-4 | |
| 166. |
Match the following: List I (Operator) List II (Description) A.? :1.ModulusB.[ ]2.Array expressionC.%3.Conditional |
| A. | A-3, B-2, C-1 |
| B. | A-1, B-2, C-3 |
| C. | A-1, B-3, C-2 |
| D. | A-2, B-3, C-1 |
| Answer» B. A-1, B-2, C-3 | |
| 167. |
Match the following: List I (Octal) List II (Decimal number)A.351.53B.652.62C.543.29D.764.44 |
| A. | A-4, B-3, C-2, D-1 |
| B. | A-1, B-2, C-3, D-4 |
| C. | A-2, B-3, C-1, D-4 |
| D. | A-3, B-1, C-4, D-2 |
| Answer» E. | |
| 168. |
Match the following: List I List II A.Serial Binary adder1.(2n - 1)tpdB.Ripple carry adder2.(n - 1)tpdC.Carry look ahead binary adder3.Operation time independent of size 4.6tpd for 4 bit carry look ahead adder |
| A. | A-2, B-1, C-3 |
| B. | A-2, B-1, C-4 |
| C. | A-1, B-2, C-4 |
| D. | A-1, B-2, C-3 |
| Answer» B. A-2, B-1, C-4 | |
| 169. |
Match the following: List I List II A.Horn antenna1.High directivityB.Parabolic antenna2.Very high directivityC.Lens antenna3.Moderate directivity |
| A. | A-1, B-2, C-3 |
| B. | A-3, B-2, C-1 |
| C. | A-3, B-1, C-2 |
| D. | A-1, B-3, C-2 |
| Answer» D. A-1, B-3, C-2 | |
| 170. |
Match the following: List I List II A.DMA controller1.Interface between computer and video display adapterB.CKT controller2.Used to read data directly from disk into directly memoryC.Interrupt controller3.Supervises the operation of control signal |
| A. | A-1, B-2, C-3 |
| B. | A-2, B-3, C-1 |
| C. | A-3, B-2, C-1 |
| D. | A-2, B-1, C-3 |
| Answer» E. | |
| 171. |
Match the following: List I (Diode circuit) List II (Name of the circuit)A.1.Positive limiterB.2.Positive clamperC.3.Negative clamper |
| A. | A-2, B-3, C-1 |
| B. | A-1, B-2, C-3 |
| C. | A-2, B-1, C-3 |
| D. | A-3, B-1, C-2 |
| Answer» B. A-1, B-2, C-3 | |
| 172. |
Match the following: List I (Symbol in java) List II (Meaning)A.&1.Logical ANDB.ÀÜ2.ANDC.| |3.XORD.& &4.Logical OR |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-2, B-3, C-1, D-4 |
| C. | A-4, B-2, C-3, D-1 |
| D. | A-2, B-3, C-4, D-1 |
| Answer» E. | |
| 173. |
Match the following: List I List II A.Poles and zeros of lie an real axis driving point LC network1.lie an real axisB.Canonic LC network has2.a zeroC.The number of Canonic networks for the given driving point function3.minimum number of elementsD.The first critical frequency nearest the origin for RL driving point impedance4.four 5.minimum number of elements 6.alternate 7.either a pole or zero 8.three |
| A. | A-1, B-5, C-8, D-7 |
| B. | A-6, B-5, C-3, D-2 |
| C. | A-1, B-5, C-4, D-2 |
| D. | A-1, B-3, C-4, D-7 |
| Answer» D. A-1, B-3, C-4, D-7 | |
| 174. |
Match the following: List I (Operator) List II (Description) A.& &1.AssignmentB.| |2.Logical ANDC.=3.Logical OR |
| A. | A-1, B-2, C-3 |
| B. | A-2, B-3, C-1 |
| C. | A-3, B-2, C-1 |
| D. | A-1, B-3, C-2 |
| Answer» C. A-3, B-2, C-1 | |
| 175. |
Match the following: List I List II A.1.CirclesB.2.Straight linesC.3.HyperbolasD. |
| A. | A-2, B-3, C-3, D-1 |
| B. | A-1, B-3, C-2, D-1 |
| C. | A-2, B-1, C-3, D-3 |
| D. | A-3, B-2, C-1, D-2 |
| Answer» B. A-1, B-3, C-2, D-1 | |
| 176. |
Match the following: List I List II A.Multiplexer1.Sequential memoryB.De-multiplexer2.Converts decimal number to binaryC.Shift register3.Data selectorD.Encoder4.Routes single input to many outputs |
| A. | A-3, B-4, C-1, D-2 |
| B. | A-4, B-3, C-1, D-2 |
| C. | A-3, B-4, C-2, D-1 |
| D. | A-1, B-2, C-3, D-4 |
| Answer» B. A-4, B-3, C-1, D-2 | |
| 177. |
Match the following: List I (Logic family) List II (Characteristic) A.TTL1.Maximum power consumptionB.ECL2.Highest packing densityC.NMOS3.Least power consumptionD.CMOS4.Saturated Logic |
| A. | A-1, B-4, C-2, D-3 |
| B. | A-1, B-4, C-3, D-2 |
| C. | A-4, B-1, C-2, D-3 |
| D. | A-4, B-1, C-3, D-2 |
| Answer» B. A-1, B-4, C-3, D-2 | |
| 178. |
Match the following: List I List II A.FM1.slope-overloadB.DM2.μ lawC.PSK3.Envelope detectorD.PCM4.Capture effect 5.Hilbert transform 6.Matched filter. |
| A. | A-5, B-1, C-6, D-4 |
| B. | A-4, B-6, C-1, D-5 |
| C. | A-4, B-1, C-6, D-2 |
| D. | A-6, B-3, C-4, D-2 |
| Answer» D. A-6, B-3, C-4, D-2 | |
| 179. |
Match the following: List I List II A.Reactance theorem1.FosterB.Driving point impedance2.BartlettC.Continued fraction expansion3.CauerD.Bisection Theorem4.Positive real function |
| A. | A-1, B-4, C-3, D-2 |
| B. | A-1, B-2, C-3, D-4 |
| C. | A-2, B-3, C-1, D-4 |
| D. | A-3, B-4, C-2, D-1 |
| Answer» B. A-1, B-2, C-3, D-4 | |
| 180. |
Match the following: List I List II A.Synchro1.AmplifierB.Amplidyne2.ActuatorC.Servo3.CompensatorD.RC network4.Transducer |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-4, B-3, C-2, D-1 |
| C. | A-3, B-2, C-4, D-1 |
| D. | A-4, B-1, C-2, D-3 |
| Answer» D. A-4, B-1, C-2, D-3 | |
| 181. |
Match the following: List I List II A.CTFS1.PeriodicB.DTFS2.Non-periodicC.CTFT D.DTFT |
| A. | A-2, B-1, C-2, D-2 |
| B. | A-2, B-1, C-2, D-1 |
| C. | A-1, B-2, C-2, D-2 |
| D. | A-1, B-2, C-2, D-1 |
| Answer» C. A-1, B-2, C-2, D-2 | |
| 182. |
Match the following: List I (Instrument) List II (Measured quantity) A.Hot wire1.only voltageB.PMMC2.phaseC.Electrostatic3.true RMS valueD.Lock in Amplifier4.dc value |
| A. | A-3, B-2, C-1, D-4 |
| B. | A-1, B-4, C-2, D-3 |
| C. | A-3, B-4, C-1, D-2 |
| D. | A-2, B-3, C-4, D-1 |
| Answer» D. A-2, B-3, C-4, D-1 | |
| 183. |
Match the following: List I f(t) List II F (s)A.cos ωt1.B.sin ωt2.C.cosh ωt3.D.sinh ωt4. |
| A. | A-1, B-3, C-2, D-4 |
| B. | A-4, B-2, C-1, D-3 |
| C. | A-4, B-3, C-1, D-2 |
| D. | A-3, B-2, C-1, D-4 |
| Answer» D. A-3, B-2, C-1, D-4 | |
| 184. |
Match the following: List I (DOS commands) List II (Meaning) A.DBLSPACE1.Deletes a director and its sub-directoriesB.MEM2.Displays the amount of used and free memoryC.SYS3.Put a copy of DOS on diskD.DELTREE4.Compresses files to increase the storage capacity of disc |
| A. | A-4, B-3, C-2, D-1 |
| B. | A-2, B-3, C-4, D-1 |
| C. | A-4, B-2, C-3, D-1 |
| D. | A-1, B-2, C-3, D-4 |
| Answer» D. A-1, B-2, C-3, D-4 | |
| 185. |
Match the following: List I List II A.1.ZeroB.2.0.2C.3.ActuatorD.4.infinity |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-1, B-3, C-2, D-4 |
| C. | A-4, B-3, C-2, D-1 |
| D. | A-4, B-2, C-3, D-1 |
| Answer» E. | |
| 186. |
Match the following: List I (Logic family) List II (Characteristic of logic family) A.TTL1.Maximum power ConsumptionB.ECL2.Highest Packing DensityC.NMOS3.Least Power ConsumptionD.CMOS4.Saturated Logic |
| A. | A-1, B-4, C-2, D-3 |
| B. | A-1, B-4, C-3, D-2 |
| C. | A-4, B-1, C-2, D-3 |
| D. | A-4, B-1, C-3, D-2 |
| Answer» D. A-4, B-1, C-3, D-2 | |
| 187. |
Match the following: List I List II A.Reflex Klystron1.High efficiencyB.Dielectric loaded wave guide2.Slow wave structureC.TWT3.Cross field deviceD.Multi Cavity Klystron4.Oscillator |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-4, B-3, C-2, D-1 |
| C. | A-2, B-4, C-1, D-3 |
| D. | A-3, B-1, C-4, D-2 |
| Answer» C. A-2, B-4, C-1, D-3 | |
| 188. |
Match the following: List I List II A.shift Register1.Frequency divisionB.Counter2.Addressing in memory chipsC.Decoder3.Serial to parallel Data conversion |
| A. | A-3, B-2, C-1 |
| B. | A-3, B-1, C-2 |
| C. | A-2, B-1, C-3 |
| D. | A-1, B-2, C-2 |
| Answer» C. A-2, B-1, C-3 | |
| 189. |
Match the following: List I (Characteristic equation) List II (Degree of damping)A.s2 + 15s + 56.251.UndampedB.s2 + 5s + 62.UnderdampedC.s2 + 20.253.Critically dampedD.s2 + 4.55s + 42.254.Overdamped |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-2, B-3, C-1, D-4 |
| C. | A-3, B-4, C-1, D-2 |
| D. | A-1, B-2, C-4, D-3 |
| Answer» D. A-1, B-2, C-4, D-3 | |
| 190. |
Match the following: List I List II A.Very low response at very high frequencies1.Low-pass systemB.Over shoot2.Velocity dampingC.Synchro-control transformer output3.Natural frequency 4.Phase-sensitive modulation 5.Damping ratio |
| A. | A-1, B-5, C-4 |
| B. | A-3, B-2, C-4 |
| C. | A-2, B-5, C-4 |
| D. | A-4, B-1, C-3 |
| Answer» B. A-3, B-2, C-4 | |
| 191. |
Match the following: List I (Command in WORD) List II (Meaning) A.END1.The bar displays the current position of cursorB.HOME2.Moves cursor to the beginning of current lineC.Status3.Moves cursor to end of document |
| A. | A-1, B-2, C-3 |
| B. | A-3, B-1, C-2 |
| C. | A-2, B-3, C-1 |
| D. | A-3, B-2, C-1 |
| Answer» E. | |
| 192. |
Match the following: List I List II A.Digital counter1.Measurement of harmonicsB.Schering Bridge2.Measurement of frequencyC.Meggar3.Measurement of loss angle of dielectricD.Spectrum analyser4.Measurement of insulation resistance |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-4, B-3, C-2, D-1 |
| C. | A-2, B-3, C-4, D-1 |
| D. | A-4, B-1, C-3, D-2 |
| Answer» D. A-4, B-1, C-3, D-2 | |
| 193. |
Match the following: List I (μP) List II (Number of bits in register) A.80851.32 bitB.80862.16 bitC.680003.8/16 bit |
| A. | A-1, B-2, C-3 |
| B. | A-2, B-3, C-1 |
| C. | A-3, B-2, C-1 |
| D. | A-3, B-1, C-2 |
| Answer» D. A-3, B-1, C-2 | |
| 194. |
Match the following: List I List II A.T (reflection) coefficient1.B.T = - 12.ZL = Z0C.T = + 13.ZL = 0D.- 1 < T < + 14.ZL = ‚àû |
| A. | A-2, B-3, C-4, D-1 |
| B. | A-1, B-2, C-3, D-4 |
| C. | A-2, B-4, C-1, D-3 |
| D. | A-3, B-2, C-4, D-1 |
| Answer» B. A-1, B-2, C-3, D-4 | |
| 195. |
Match the following: List I List II A.lag compensation1.Exterior of unit circle |z| = 1B.lead compensation2.PD controlC.stability3.Non-minimum phaseD.Instability4.Left half s plane 5.PI control |
| A. | A-2, B-5, C-1, D-3 |
| B. | A-3, B-1, C-2, D-5 |
| C. | A-1, B-2, C-3, D-4 |
| D. | A-5, B-2, C-4, D-1 |
| Answer» E. | |
| 196. |
Match the following: List I List II A.CLP1.Measure of μP clock speedB.SHELL2.Double sided double densityC.DSDD3.Allows you to specify file as command processorD.Megahertz4.Microcode stored in ROM |
| A. | A-4, B-3, C-2, D-1 |
| B. | A-3, B-4, C-2, D-1 |
| C. | A-1, B-2, C-3, D-4 |
| D. | A-2, B-3, C-4, D-1 |
| Answer» B. A-3, B-4, C-2, D-1 | |
| 197. |
Match the following: List I (Set operation) List II (Set operator)A.Set equality1.-B.Set inclusion2.=C.Set intersection3.< =D.Set difference4.‚àó |
| A. | A-2, B-3, C-4, D-1 |
| B. | A-3, B-2, C-4, D-1 |
| C. | A-1, B-2, C-3, D-4 |
| D. | A-4, B-2, C-3, D-1 |
| Answer» B. A-3, B-2, C-4, D-1 | |
| 198. |
Match the following: List I List II A.LED1.Heavy DopingB.Avalanche Photodiode2.Coherent RadiationC.Tunnel diode3.Spontaneous EmissionD.LASER4.Current gain |
| A. | A-2, B-4, C-3 |
| B. | A-2, B-3, C-1, D-4 |
| C. | A-3, B-4, C-1, D-2 |
| D. | A-2, B-1, C-4, D-3 |
| Answer» D. A-2, B-1, C-4, D-3 | |
| 199. |
Match the following: List I List II A.Ring modulator1.Clock recoveryB.VCO2.Demodulation of FMC.Foster Seeley discriminator3.Frequency conversionD.Mixer4.Summing of two points 5.Generation of FM 6.Generation of DSB-SC |
| A. | A-1, B-3, C-2, D-4 |
| B. | A-6, B-5, C-2, D-3 |
| C. | A-6, B-1, C-3, D-2 |
| D. | A-5, B-6, C-1, D-3 |
| Answer» C. A-6, B-1, C-3, D-2 | |
| 200. |
Match the following: List I List II A.Fourier transform of a Gaussian function1.Gaussian functionB.Convolution of a rectangular pulse with itself2.Rectangular pulseC.Current through inductor for step input voltage3.Triangular pulse 4.Ramp function 5.Zero |
| A. | A-1, B-2, C-3 |
| B. | A-2, B-4, C-5 |
| C. | A-1, B-3, C-4 |
| D. | A-2, B-3, C-5 |
| Answer» D. A-2, B-3, C-5 | |