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.
| 101. |
If r is resistivity, l is length of wire, a is area of cross-section, ω is angular frequency, F is form factor, n is number of turns, d is coil diameter and r is resistance of a coil. List I List II A.Value of inductance1.B.Power factor2.C.Q factor3.D.Value of resistance4.Fn2d |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-4, B-3, C-2, D-1 |
| C. | A-4, B-2, C-3, D-1 |
| D. | A-1, B-3, C-2, D-4 |
| Answer» C. A-4, B-2, C-3, D-1 | |
| 102. |
Match the following: List I List II A.D Layer1.110 kmB.E layer2.10 kmC.F layer3.60 kmD.Troposphere4.350 km |
| A. | A-3, B-1, C-4, D-2 |
| B. | A-2, B-1, C-4, D-2 |
| C. | A-3, B-2, C-1, D-4 |
| D. | A-4, B-3, C-1, D-2 |
| Answer» B. A-2, B-1, C-4, D-2 | |
| 103. |
Match the following: List I List II A.Evanescent wave1.Pattern multiplicationB.Skip distance2.Mismatched transmission lineC.Return loss3.Propagation in lossy mediumD.Antenna array4.Short wave propagation 5.Propagation below cut-off |
| A. | A-5, B-2, C-4, D-3 |
| B. | A-2, B-4, C-1, D-5 |
| C. | A-5, B-4, C-2, D-1 |
| D. | A-1, B-3, C-4, D-5 |
| Answer» D. A-1, B-3, C-4, D-5 | |
| 104. |
Match the following: List I (VCR system) List II (Azimuth angle)A.VHS1.7°B.Video 20002.15°C.Betamax3.6° |
| A. | A-1, B-2, C-3 |
| B. | A-1, B-3, C-2 |
| C. | A-3, B-1, C-2 |
| D. | A-3, B-2, C-1 |
| Answer» D. A-3, B-2, C-1 | |
| 105. |
Match the following: List I (Modes) List II (Characteristic)A.Evanescent1.Rectangular waveguide does not supportB.Dominant mode2.No wave propagationC.TM10 and TM013.Lowest cut-off frequency |
| A. | A-1, B-2, C-3 |
| B. | A-2, B-3, C-1 |
| C. | A-1, B-3, C-2 |
| D. | A-2, B-1, C-3 |
| Answer» C. A-1, B-3, C-2 | |
| 106. |
Match the following: List I (BJT amplifier) List II (Characteristics) A.CE1.good voltage gain, good current gainB.CC2.voltage gain less than 1, high current gainC.CB3.current gain less than 1, voltage gain high |
| A. | A-1, B-2, C-3 |
| B. | A-1, B-2, C-3 |
| C. | A-3, B-1, C-2 |
| D. | A-3, B-2, C-1 |
| Answer» C. A-3, B-1, C-2 | |
| 107. |
Match the following: List I List II A.C1.7 eVB.Si2.1.15 eVC.Ge3.0.75 eVD.Sn4.0.1 eVE.Pb5.0 eV |
| A. | A-2, B-3, C-4, D-5, E-1 |
| B. | A-1, B-2, C-3, D-4, E-5 |
| C. | A-3, B-1, C-2, D-5, E-4 |
| D. | A-4, B-5, C-1, D-2, E-3 |
| Answer» C. A-3, B-1, C-2, D-5, E-4 | |
| 108. |
Match the following: List I (Binary) List II (Hexadecimal) A.101010101.FFB.111111112.88C.100010003.92D.100100104.AA |
| A. | A-4, B-1, C-2, D-3 |
| B. | A-1, B-2, C-3, D-4 |
| C. | A-3, B-1, C-2, D-4 |
| D. | A-1, B-3, C-4, D-1 |
| Answer» B. A-1, B-2, C-3, D-4 | |
| 109. |
Match the following: List I (Component) List II (Dominant TE mode) A.Rectangular wave guide1.TE101B.Circular waveguide2.TE10C.Rectangular cavity3.TE111 4.TE11 |
| A. | A-4, B-2, C-1 |
| B. | A-2, B-1, C-3 |
| C. | A-3, B-4, C-1 |
| D. | A-2, B-3, C-1 |
| Answer» E. | |
| 110. |
List I (Branches) List II A.1, 2, 3, 41.TwigsB.4, 5, 6, 72.LinksC.1, 2, 3, 83.Fundamental cutsetD.1, 4, 5, 6, 74.Fundamental loop |
| A. | A-3, B-1, C-2, D-4 |
| B. | A-2, B-3, C-1, D-4 |
| C. | A-3, B-2, C-4, D-1 |
| D. | A-1, B-4, C-3, D-2 |
| Answer» B. A-2, B-3, C-1, D-4 | |
| 111. |
Match the following: List I List II A.Bode1.Asymptotic plotsB.Evans2.Polar plotsC.Nyquist3.Root locus technique 4.M and N circles |
| A. | A-1, B-4, C-2 |
| B. | A-2, B-3, C-4 |
| C. | A-3, B-1, C-4 |
| D. | A-1, B-3, C-2 |
| Answer» E. | |
| 112. |
Match the following: List I (Characteristics) List II (Device) A.Voltage controlled device1.BJTB.Current controlled device2.UJTC.Conductivity modulation device3.FETD.Negative conductance device4.Impatt diode |
| A. | A-2, B-3, C-1, D-1 |
| B. | A-2, B-3, C-4, D-1 |
| C. | A-3, B-1, C-2, D-4 |
| D. | A-3, B-1, C-4, D-2 |
| Answer» E. | |
| 113. |
Match the following: List I (Controller) List II (Controller output for unit step input) A.Proportional derivative1.B.Proportional plus derivative plus integral2.C.Proportional plus3. |
| A. | A-1, B-2, C-3 |
| B. | A-1, B-3, C-2 |
| C. | A-3, B-2, C-1 |
| D. | A-2, B-3, C-1 |
| Answer» C. A-3, B-2, C-1 | |
| 114. |
Match the following: List I List II A.Laser1.Emits monochromatic light of low intensityB.Solar cell2.Consumes electrical power due to incident lightC.Photodiode3.Delivers power to a loadD.LED4.Emits monochromatic light of high intensity |
| A. | A-4, B-3, C-1, D-2 |
| 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» D. A-3, B-4, C-1, D-2 | |
| 115. |
Match the following: List I List II A.GTO1.Widely used in digital computersB.UJT2.Used for freewheelingC.Power Diode3.Can be turned off by negative gate signalD.MOSFET4.Used in generating triggering pulses |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-4, B-2, C-3, D-1 |
| C. | A-3, B-4, C-2, D-1 |
| D. | A-2, B-1, C-3, D-4 |
| Answer» D. A-2, B-1, C-3, D-4 | |
| 116. |
Match the following: List I (Memories) List II (Characteristic) A.Static PLA1.erasable, programmableB.CCD2.ultra high speedC.ECL3.stores large volume of dataD.GAL4.Does not need refreshing 5.Non-volatile |
| A. | A-4, B-3, C-2, D-1 |
| B. | A-4, B-2, C-3, D-1 |
| C. | A-5, B-1, C-2, D-3 |
| D. | A-3, B-5, C-2, D-1 |
| Answer» D. A-3, B-5, C-2, D-1 | |
| 117. |
Match the following: List I List II A.1.Negative limiterB.2.Positive LimiterC.3.Biased negative LimiterD.4.Biased positive limiter |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-2, B-1, C-4, D-3 |
| C. | A-2, B-1, C-3, D-4 |
| D. | A-1, B-2, C-4, D-3 |
| Answer» C. A-2, B-1, C-3, D-4 | |
| 118. |
Match the following: List I List II A.R = 01.Undamped oscillationB.R < 2 L/C2.Damped oscillationC.R = 2 L/C3.Critically damped responseD.R > 2 L/C4.Non-oscillatory response. |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-1, B-4, C-3, D-2 |
| C. | A-3, B-2, C-1, D-4 |
| D. | A-3, B-4, C-1, D-2 |
| Answer» C. A-3, B-2, C-1, D-4 | |
| 119. |
Match the following: List I (Antenna) List II (Communication system) A.Turnstile1.RadarB.Yagi2.TV transmissionC.Dish3.MW broadcastingD.Vertical mast4.TV reception |
| A. | A-4, B-2, C-3, D-1 |
| B. | A-2, B-4, C-1, D-3 |
| C. | A-2, B-4, C-3, D-1 |
| D. | A-4, B-2, C-1, D-3 |
| Answer» D. A-4, B-2, C-1, D-3 | |
| 120. |
Match the following: List I (Types of N-bit ADC) List II (Characteristics)A.Flash converter1.Integrating TypeB.Successive2.Fastest converter approximationC.Counter ramp3.Maximum conversion time = N bitsD.Dual slow4.Used a DAC in its feedback path |
| A. | A-2, B-3, C-4, D-1 |
| B. | A-1, B-3, C-4, D-2 |
| C. | A-2, B-4, C-3, D-1 |
| D. | A-1, B-4, C-3, D-2 |
| Answer» B. A-1, B-3, C-4, D-2 | |
| 121. |
Match the following: List I List II A.Servomotor1.Error detectorB.Amplidyne2.TransducerC.Potentiometer3.ActuatorD.Flapper valve4.Power amplifier |
| A. | A-3, B-1, C-2, D-4 |
| B. | A-4, B-3, C-2, D-1 |
| C. | A-3, B-4, C-1, D-2 |
| D. | A-3, B-4, C-2, D-1 |
| Answer» E. | |
| 122. |
Match the following: List I List II A.Copper1.produces discrete energy level just above valence bandB.Rubber2.produces discrete energy level just below conduction bandC.Antimony3.large forbidden gapD.Boron4.valence and conduction bands overlap |
| A. | A-1, B-2, C-4, D-3 |
| B. | A-4, B-1, C-2, D-3 |
| 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 | |
| 123. |
Match the following: List I (Operator) List II (Description) A.! =1.Left shiftB.= =2.Right ShiftC.< >4.Not equal to |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-2, B-3, C-4, D-1 |
| C. | A-4, B-1, C-3, D-2 |
| D. | A-4, B-3, C-1, D-2 |
| Answer» E. | |
| 124. |
Match the following: List I List II A.Flash converter ADC1.requires conversion time of a few μsB.Dual slope ADC2.requires DACC.Successive approximation ADC3.minimizes the effect of power supply interference 4.requires complex hardware 5.is a tracking ADC |
| A. | A-2, B-3, C-4 |
| B. | A-4, B-3, C-2 |
| C. | A-5, B-4, C-3 |
| D. | A-1, B-2, C-5 |
| Answer» C. A-5, B-4, C-3 | |
| 125. |
Match the following: List I List II A.TTL1.Low propagation delayB.ECL2.Low power consumptionC.MOS3.High packing densityD.CMOS4.Saturated bipolar logic |
| A. | A-4, B-1, C-3, D-2 |
| B. | A-4, B-3, C-1, D-2 |
| C. | A-4, B-3, C-2, D-1 |
| D. | A-3, B-1, C-4, D-2 |
| Answer» B. A-4, B-3, C-1, D-2 | |
| 126. |
Match the following: List I List II A.e-t ⋃ (t)1.B.2.jω X(ω)C.3.D.4. |
| A. | A-1, B-4, C-2, D-3 |
| B. | A-3, B-2, C-4, D-1 |
| C. | A-1, B-2, C-4, D-3 |
| D. | A-3, B-4, C-2, D-1 |
| Answer» E. | |
| 127. |
Match the following: List I List II A.AM-DSB FC1.2B.WBFM2.1C.PCM3.3mD.AM-DSB4.22N |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-2, B-1, C-4, D-3 |
| C. | A-2, B-3, C-4, D-1 |
| D. | A-4, B-3, C-2, D-1 |
| Answer» D. A-4, B-3, C-2, D-1 | |
| 128. |
Match the following: List I List II A.True type1.Type of calculator in windowB.FIND2.Window commandC.WORD PAD3.Name of a FontD.STANDARD4.Has many features of a simple word processor |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-4, B-3, C-2, D-1 |
| C. | A-3, B-2, C-1, D-4 |
| D. | A-3, B-2, C-4, D-1 |
| Answer» E. | |
| 129. |
List I List II A.1.PID controllerB.2.Lead compensator 3.Lag compensator |
| A. | A-2, B-1 |
| B. | A-3, B-1 |
| C. | A-3, B-2 |
| D. | A-2, B-3 |
| Answer» C. A-3, B-2 | |
| 130. |
Match the following: List I List II A.NPN transistor1.B.PNP transistor2.C.n channel JFET3.D.p channel JFET4. |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-3, B-4, C-2, D-1 |
| C. | A-4, B-2, C-1, D-3 |
| D. | A-1, B-2, C-4, D-3 |
| Answer» D. A-1, B-2, C-4, D-3 | |
| 131. |
Match the following: List I (Processor in C) List II (Output) A.Preprocessor1.Source code fileB.Compiler2.Executable code in machine languageC.Linker3.Relocatable object code |
| 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» E. | |
| 132. |
Match the following: List I List II A.Conductor1.B.Semiconductor2.C.Insulator3. |
| A. | A-1, B-3, C-2 |
| B. | A-3, B-1, C-2 |
| C. | A-1, B-2, C-3 |
| D. | A-2, B-3, C-1 |
| Answer» B. A-3, B-1, C-2 | |
| 133. |
Match the following: List I (BHE, A0) List II (Word is read/write) A.0, 01.1 byte from/to odd addressB.0, 12.1 byte from/to even addressC.1, 03.16 bit wordD.1, 14.None |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-3, B-1, C-2, D-4 |
| C. | A-2, B-3, C-4, D-1 |
| D. | A-4, B-1, C-2, D-3 |
| Answer» C. A-2, B-3, C-4, D-1 | |
| 134. |
Match the following: List I (Circuits) List II (Output dc voltage)A.Single phase half wave converter1.B.Fully controlled bridge converter (1 phase) with RLE load2.C.3 Phase full converter3.D.Single phase full wave converter (M-2) connection4. |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-4, B-3, C-1, D-2 |
| C. | A-4, B-2, C-3, D-1 |
| D. | A-1, B-2, C-4, D-3 |
| Answer» D. A-1, B-2, C-4, D-3 | |
| 135. |
Match the following: List I (Types of transmission structure) List II (Modes of propagation)A.Strip line1.Quasi TEMB.Hollow rectangular waveguide2.Pure TEMC.Microstrip3.TE/TMD.Corrugated waveguide4.Hybrid |
| A. | A-2, B-1, C-3, D-4 |
| B. | A-4, B-1, C-3, D-2 |
| C. | A-2, B-3, C-1, D-4 |
| D. | A-4, B-3, C-1, D-2 |
| Answer» D. A-4, B-3, C-1, D-2 | |
| 136. |
Match the following: List I List II A.Penetration frequency1.Lowest frequency at which charged particles spiral in fixed magnetic fieldB.Optimum working frequency2.Same as critical and frequencyC.Gyro frequency3.Highest frequency of radio waves that can be usedD.Maximum usable frequency4.The most effective frequency for ionosphere propagation of radio waves |
| A. | A-2, B-4, C-1, D-3 |
| B. | A-4, B-1, C-3, D-2 |
| C. | A-1, B-3, C-2, D-4 |
| Answer» B. A-4, B-1, C-3, D-2 | |
| 137. |
Match the following: List I (Library function in Pascal) List II (Type of argument)A.ROUND X1.X in radiansB.ABS X2.X realC.SQR X3.X real or integerD.SIN X |
| A. | A-2, B-3, C-3, D-1 |
| B. | A-2, B-3, C-1, D-3 |
| C. | A-3, B-2, C-2, D-1 |
| D. | A-2, B-3, C-2, D-1 |
| Answer» B. A-2, B-3, C-1, D-3 | |
| 138. |
Match the following: List I List II A.PMMC1.Square law type scaleB.Moving iron2.Very good responseC.Thermo-couple3.Linear scaleD.Electrostatic4.Voltmeter |
| A. | A-4, B-1, C-2, D-3 |
| B. | A-3, B-2, C-1, D-4 |
| C. | A-4, B-2, C-1, D-3 |
| D. | A-3, B-1, C-2, D-4 |
| Answer» E. | |
| 139. |
Match the following: List I (Transducer) List II (Quantity measured) A.LVDT1.PressureB.Bourden gauge2.TemperatureC.Strain gauge3.DisplacementD.Thermistor4.Stress |
| A. | A-4, B-3, C-2, D-1 |
| B. | A-3, B-2, C-1, D-4 |
| C. | A-4, B-1, C-3, D-2 |
| D. | A-3, B-1, C-4, D-2 |
| Answer» E. | |
| 140. |
Match the following: List I List II A.SUS1.B.SBS2.C.SCS3.D.Shockley diode4. |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-1, B-3, C-4, D-2 |
| C. | A-4, B-2, C-3, D-1 |
| D. | A-1, B-2, C-4, D-3 |
| Answer» E. | |
| 141. |
Match the following: List I (Network Theorems) List II (Most distinguished property of networks) A.Reciprocity1.Impedance MatchingB.Tellegen's2.BilateralC.Superposition3.vk(t1)ik(t2) = 0D.Maximum power transfer4.Linear 5.Non-linear |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-1, B-2, C-3, D-5 |
| C. | A-2, B-3, C-4, D-1 |
| D. | A-2, B-3, C-5, D-1 |
| Answer» D. A-2, B-3, C-5, D-1 | |
| 142. |
Match the following: List I List II A.p type semiconductor1.siliconB.n type semiconductor2.holes are majority carriersC.Intrinsic semiconductor3.electrons are majority carriersD.Tungsten4.is a metal |
| A. | A-2, B-3, C-1, D-4 |
| B. | A-1, B-2, C-3, D-4 |
| C. | A-4, B-3, C-2, D-1 |
| D. | A-3, B-1, C-2, D-4 |
| Answer» B. A-1, B-2, C-3, D-4 | |
| 143. |
Match the following: List I (Logic) List II (Characteristic) A.RTL1.High fan outB.CMOS2.Highest speed of operationC.I2L3.High noise immunityD.ECL4.Lowest product of power and delay |
| A. | A-4, B-3, C-2, D-1 |
| B. | A-4, B-3, C-2, D-3 |
| C. | A-3, B-1, C-4, D-2 |
| D. | A-3, B-4, C-1, D-2 |
| Answer» D. A-3, B-4, C-1, D-2 | |
| 144. |
List I List II (Value of tan-1 ) A.1.90°B.2.0°C.3.50° |
| A. | A-1, B-2, C-3 |
| B. | A-2, B-1, C-3 |
| C. | A-3, B-1, C-2 |
| D. | A-3, B-2, C-1 |
| Answer» C. A-3, B-1, C-2 | |
| 145. |
Match the following: List I List II A.Sky wave1.parasitic elementsB.Antenna feed2.delta matchC.Reflector3.long-wire antennaD.Rhombic antenna4.ionosphere |
| A. | A-1, B-3, C-4, D-2 |
| B. | A-2, B-1, C-3, D-4 |
| C. | A-1, B-2, C-3, D-4 |
| D. | A-4, B-2, C-1, D-3 |
| Answer» E. | |
| 146. |
Match the following: List I (Network parameter) List II (Measured under open-circuit conditions) A.Z111.B.A2.C.C3.D.Z224. |
| A. | A-1, B-4, C-2, D-3 |
| B. | A-3, B-4, C-2, D-1 |
| C. | A-1, B-2, C-4, D-3 |
| D. | A-3, B-2, C-4, D-1 |
| Answer» E. | |
| 147. |
Match the following: List I List II A.Ratio of maximum energy stored to energy dissipated per cycle1.Propagation constantB.TEM mode is loss less medium2.Cutoff frequency is zeroC.Ratio of frequency in radian to phase velocity of EM wave3.Quality factor of cavityD.TEM is the mode of lowest cutoff frequency4.Cylindrical waveguide |
| A. | A-3, B-2, C-4, D-1 |
| B. | A-2, B-3, C-1, D-4 |
| C. | A-3, B-2, C-1, D-4 |
| D. | A-2, B-3, C-4, D-1 |
| Answer» D. A-2, B-3, C-4, D-1 | |
| 148. |
Match the following: List I (type of controller) List II (Operation)A.Pneumatic controller1.Flexible operationB.Hydraulic controller2.High torque high speed operationC.Electronic controller3.Fire and explosion proof operation |
| A. | A-1, B-3, C-2 |
| B. | A-1, B-2, C-3 |
| C. | A-3, B-1, C-2 |
| D. | A-3, B-2, C-1 |
| Answer» E. | |
| 149. |
Match the following: List I List II A.Silicon1.Donor ImpurityB.Antimony2.Acceptor ImpurityC.Gallium3.Most Commonly used semiconductor materialD.Germanium4.Atomic number 32 |
| A. | A-3, B-1, C-2, D-4 |
| B. | A-2, B-3, C-1, D-4 |
| C. | A-1, B-2, C-3, D-4 |
| D. | A-4, B-3, C-2, D-1 |
| Answer» B. A-2, B-3, C-1, D-4 | |
| 150. |
Match the following: List I List II A.Resistance1.Current noiseB.Diode2.Partition noiseC.Triode3.Shot noiseD.p-n junction4.Atmospheric noise 5.Johnson noise |
| A. | A-5, B-3, C-2, D-1 |
| B. | A-1, B-2, C-3, D-5 |
| C. | A-3, B-5, C-1, D-2 |
| D. | A-3, B-5, C-2, D-1 |
| Answer» B. A-1, B-2, C-3, D-5 | |