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.
| 1. |
Match the following: List I List II A.∇ x = 01.irrotational vectorB.∇ . = 02.conservative fieldC.∮ .dl = 03.solenoidal vector |
| A. | A-3, B-1, C-2 |
| B. | A-1, B-2, C-3 |
| C. | A-2, B-3, C-1 |
| D. | A-3, B-2, C-1 |
| Answer» B. A-1, B-2, C-3 | |
| 2. |
List I (Theorems) List II (Property of Network) A.h111.1/(re + rd)B.h122.rb + reC.h213.μbcD.h224.μcb |
| A. | A-2, B-1, C-4, D-3 |
| B. | A-4, B-3, C-2, D-1 |
| C. | A-2, B-3, C-4, D-1 |
| D. | A-4, B-1, C-2, D-3 |
| Answer» D. A-4, B-1, C-2, D-3 | |
| 3. |
Match the following: List I (Theorems) List II (Property of Network) A.Reciprocity1.Impedance matchingB.Tellegen's2.BilateralC.Superposition3.∑ Vjk Ijk = 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 | |
| 4. |
Match the following: List I (Electron spin) List II (Phenomenon) A.↑↑↑↑1.AntiferromagnetismB.↑↓↑↓2.FerrimagnetismC.↑↓↑↓3.Ferromagnetism |
| A. | A-1, B-2, C-3 |
| B. | A-3, B-2, C-1 |
| C. | A-2, B-3, C-1 |
| D. | A-3, B-1, C-2 |
| Answer» E. | |
| 5. |
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 | |
| 6. |
Match the following: List I List II A.RT1.A = DB.Rh2.h12 = h21C.ST3.AD - BC = 1D.Sh4.h21 = - h21 5.B = C 6.Δh = 1 |
| A. | A-3, B-4, C-1, D-6 |
| B. | A-3, B-2, C-5, D-4 |
| C. | A-5, B-4, C-1, D-2 |
| D. | A-5, B-4, C-1, D-6 |
| Answer» B. A-3, B-2, C-5, D-4 | |
| 7. |
Match the following: List I List II A.T (Reflection coefficient) = 01.(ZL - Zo)/(ZL + Zo)B.T = - 12.ZL = ZoC.T = + 13.ZL = 0D.- 1 < T < + 14.ZL = ∞ |
| A. | A-2, B-3, C-4, D-1 |
| B. | A-2, B-4, C-1, D-3 |
| C. | A-1, B-2, C-3, D-4 |
| D. | A-3, B-2, C-4, D-1 |
| Answer» B. A-2, B-4, C-1, D-3 | |
| 8. |
Match the following: List I List II A.SSB Modulation1.Transmission lineB.Δ . B = 02.Hilbert transformC.Model dispersion3.Faraday's law 4.Absence of magnetic monopoles 5.Waveguides 6.Phase locked loop |
| A. | A-1, B-3, C-5 |
| B. | A-5, B-4, C-2 |
| C. | A-6, B-4, C-5 |
| D. | A-2, B-4, C-5 |
| Answer» E. | |
| 9. |
Match the following: List I List II A.(∇ x E)ds = 01.Continuity equationB.rv.dv = Q2.Ampere's lawC.(J + D)ds3.Gauss lawD.-rvdv4.Faraday's lawE.H.dl = (∇ x H)ds5.Stoke's theorem |
| A. | A-4, B-3, C-2, D-1, E-5 |
| B. | A-1, B-2, C-3, D-4, E-5 |
| C. | A-4, B-2, C-1, D-3, E-5 |
| D. | A-1, B-5, C-4, D-2, E-3 |
| Answer» B. A-1, B-2, C-3, D-4, E-5 | |
| 10. |
Match the following: List I List II A.A1 cos 2pf1t1.B.A1 A2 cos 2pf1t cos 2pf2t2.v1 (t) v2 (t)C.3., f1, - f1D.f1 + f2, f1 - f2, - f1 + f2, - f1 - f24.A1 cos ω1t |
| A. | A-3, B-1, C-4, D-2 |
| B. | A-1, B-2, C-3, D-4 |
| C. | A-4, B-2, C-1, D-3 |
| D. | A-3, B-1, C-2, D-4 |
| Answer» B. A-1, B-2, C-3, D-4 | |
| 11. |
Match the following: List I (Signal) List II (Value)A.AM1.0 0.5B.DSB - SC2.1C.SSB3.2D.FM (β = 2)4.16E.FM (β = 5)5.8 |
| A. | A-1, B-3, C-2, D-5, E-4 |
| B. | A-3, B-3, C-1, D-5, E-4 |
| C. | A-2, B-1, C-4, D-5, E-5 |
| D. | A-4, B-2, C-5, D-3, E-1 |
| Answer» C. A-2, B-1, C-4, D-5, E-5 | |
| 12. |
Match the following: List I (Modulation ) List II (Modulation Index) A.DSBFC1.μ > 1B.DSBSC2.μ > 0C.SSB3.∞ 4.μ, any value |
| A. | A-2, B-2, C-3 |
| B. | A-1, B-3, C-3 |
| C. | A-4, B-2, C-1 |
| D. | A-2, B-3, C-1 |
| Answer» B. A-1, B-3, C-3 | |
| 13. |
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. | |
| 14. |
Match the following: List I List II A.1.a constantB.e-jω2.exponential functionC.3.t multiplied exponential functionD.k δ(ω)4.rectangular pulse 5.impulse function |
| A. | A-4, B-5, C-3, D-1 |
| B. | A-4, B-5, C-3, D-2 |
| C. | A-3, B-4, C-2, D-1 |
| D. | A-3, B-4, C-2, D-5 |
| Answer» B. A-4, B-5, C-3, D-2 | |
| 15. |
Match the following: List I f(t) List II F(s) A.t1.B.eat2.C.u(t)3.D.cos ωt4. |
| A. | A-1, B-3, C-2, D-4 |
| B. | A-1, B-4, C-2, D-3 |
| C. | A-2, B-4, C-1, D-3 |
| D. | A-4, B-3, C-1, D-2 |
| Answer» E. | |
| 16. |
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 | |
| 17. |
Match the following: List I List IIA.1.v(t) = u(t + 1)B.2.v(t) = u(t) - 2u(t - 1) + 2u(t - 2) - 2u(t - 3)....C.3.v(t) = u(t - 1) - u(t - 3)D.4. v(t) = δ(t - 1) |
| A. | A-3, B-4, C-2, D-1 |
| B. | A-3, B-4, C-1, D-2 |
| C. | A-4, B-3, C-2, D-1 |
| D. | A-4, B-3, C-1, D-2 |
| Answer» C. A-4, B-3, C-2, D-1 | |
| 18. |
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 | |
| 19. |
Match the following: List I (Bits operator in C) List II (Meaning) A.˜1.Bitwise XORB.&2.Bitwise ANDC.|3.Bitwise ORD.U4.One's complement |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-4, B-3, C-2, D-1 |
| C. | A-2, B-3, C-1, D-4 |
| D. | A-4, B-2, C-3, D-1 |
| Answer» E. | |
| 20. |
Match the following: List I (Symbol in java) List II (Meaning)A.&1.Logical ANDB.ˆ2.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. | |
| 21. |
Match the following: List I (Operator in C) List II (Priority of Operation) A.!1.1B.< >2.2C.∗3.3D.=4.4 |
| 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-3, B-2, C-1, D-4 |
| Answer» C. A-4, B-3, C-2, D-1 | |
| 22. |
Match the following: List I (Set operation) List II (Set operator)A.Set equality1.-B.Set inclusion2.=C.Set intersection3.< =D.Set difference4.∗ |
| 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 | |
| 23. |
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 | |
| 24. |
Match the following: List I List II A.T (reflection) coefficient1.B.T = - 12.ZL = Z0C.T = + 13.ZL = 0D.- 1 < T < + 14.ZL = ∞ |
| 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 | |
| 25. |
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 | |
| 26. |
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 | |
| 27. |
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 | |
| 28. |
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 | |
| 29. |
Match the following: List I List II A.Direct addressing1.MOV A, MB.Register addressing2.MOV C, AC.Register indirect addressing3.LDA 7D.Immediate addressing4.STA FFC |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-4, B-2, C-1, D-3 |
| C. | A-2, B-3, C-4, D-1 |
| D. | A-3, B-2, C-1, D-4 |
| Answer» C. A-2, B-3, C-4, D-1 | |
| 30. |
Match the following: List I (Types of memory) List II (Used As)A.DRAM1.Cache memoryB.SRAM2.Main memoryC.Parallel Access Registers3.BIOS memoryD.ROM4.CPU registers |
| 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» D. A-3, B-2, C-4, D-1 | |
| 31. |
Match the following: List I (Diode Rectifier) List II (Efficiency is Rf/RL = 0.25) A.Half wave1.0.54B.Bridge Rectifier2.0.65C.Full wave using tapped centre transformer3.0.325 |
| A. | A-1, B-2, C-3 |
| B. | A-2, B-1, C-3 |
| C. | A-3, B-2, C-1 |
| D. | A-3, B-1, C-2 |
| Answer» E. | |
| 32. |
Match the following: List I (Microwave device) List II (Application)A.PIN diode1.Microwave amplificationB.GaAs MOSFET2.Low noise microwave generationC.Transferred electron device3.Electronic tuning of MW oscillatorD.Varactor diode4.Light wave detection |
| A. | A-1, B-2, C-4, D-3 |
| B. | A-4, B-1, C-2, D-3 |
| C. | A-2, B-3, C-1, D-4 |
| D. | A-3, B-4, C-2, D-1 |
| Answer» C. A-2, B-3, C-1, D-4 | |
| 33. |
Match the following: List I List II A.Anderson Bridge1.Low resistanceB.Kelvin Bridge2.Medium resistanceC.Schering Bridge3.InductanceD.Wheatstone Bridge4.Capacitance |
| A. | A-4, B-2, C-3, D-1 |
| B. | A-3, B-2, C-4, D-1 |
| C. | A-3, B-1, C-4, D-2 |
| D. | A-4, B-1, C-3, D-2 |
| Answer» D. A-4, B-1, C-3, D-2 | |
| 34. |
Match the following: List I List II A.Effective length of antenna1.B.Capture area2.C.Front to back ratio3. |
| A. | A-3, B-2, C-1 |
| B. | A-2, B-3, C-1 |
| C. | A-1, B-3, C-2 |
| Answer» C. A-1, B-3, C-2 | |
| 35. |
Match the following: List I List II A.hie1.49B.hre2.25 x 10-6siemensC.hfe3.2.4 x 10-4D.hoe4.1000 ohms |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-4, B-3, C-2, D-1 |
| C. | A-3, B-4, C-1, D-2 |
| D. | A-4, B-3, C-1, D-2 |
| Answer» E. | |
| 36. |
Match the following: List I List II A.loop antenna1.flat lineB.folded dipole2.300 WC.SWR of 13.sharp broadside fullD.VHF band4.30 to 300 MHz |
| A. | A-1, B-4, C-3, D-4 |
| B. | A-4, B-3, C-2, D-1 |
| C. | A-3, B-2, C-1, D-4 |
| D. | A-2, B-3, C-1, D-4 |
| Answer» D. A-2, B-3, C-1, D-4 | |
| 37. |
Match the following: List I List II A.Darlington amplifier1.A circuit using pnp and npn transistorsB.CB amplifier2.A CS amplifier driving a CG amplifierC.Cascade amplifier3.A circuit with over-all voltage gain close to 1 and very large input impedanceD.Complementary symmetry amplifier4.A circuit with low input impedance |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-2, B-1, C-3, D-4 |
| C. | A-3, B-4, C-2, D-1 |
| D. | A-4, B-3, C-2, D-1 |
| Answer» D. A-4, B-3, C-2, D-1 | |
| 38. |
Match the following: List I List II A.Coastals receiver1.VSBB.Stereo-multiplexing2.Demodulating DSB-SCC.TV broad casting3.FM radio broad casting 4.Slope overload 5.Matched filter |
| A. | A-1, B-3, C-2 |
| B. | A-2, B-3, C-1 |
| C. | A-2, B-1, C-4 |
| D. | A-4, B-3, C-1 |
| Answer» C. A-2, B-1, C-4 | |
| 39. |
Match the following: List I List II A.Ampere's Law1.B.Faraday's Law2.C.Gauss's Law3.D.Free Space4. |
| A. | A-1, B-4, C-2, D-3 |
| B. | A-2, B-4, C-3, D-1 |
| C. | A-3, B-1, C-2, D-4 |
| D. | A-4, B-3, C-2, D-1 |
| Answer» E. | |
| 40. |
Match the following: List I List II A.Line commutation1.B.Resonant commutation2.C.Complementary commutation3.D.Self commutation4. |
| A. | A-1, B-4, C-2, D-3 |
| B. | A-1, B-2, C-3, D-4 |
| C. | A-4, B-1, C-3, D-2 |
| D. | A-2, B-3, C-4, D-1 |
| Answer» D. A-2, B-3, C-4, D-1 | |
| 41. |
Match the following: List I (Double Rectifier) List II (Number of Diodes) A.Full wave Bridge rectifier1.1B.Half wave rectifier2.2C.Full wave rectifier using centre tapped transformer3.4 |
| A. | A-1, B-2, C-3 |
| B. | A-3, B-1, C-2 |
| C. | A-2, B-1, C-3 |
| D. | A-3, B-1, C-2 |
| Answer» C. A-2, B-1, C-3 | |
| 42. |
Match the following: List I List II A.JFET1.B.DMOSFET2.C.TRIAC3.D.Enhancement-only channel MOSFET4. |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-2, B-3, C-4, D-1 |
| C. | A-3, B-2, C-1, D-4 |
| D. | A-4, B-3, C-1, D-2 |
| Answer» D. A-4, B-3, C-1, D-2 | |
| 43. |
Match the following: List I (Theorems) List II (Property of Network) A.Reciprocity1.Impedance matchingB.Tellegen's2.BilateralC.Superposition3.‚àë Vjk Ijk = 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 | |
| 44. |
Match the following: List I (Roots in s plane) List II (Impulse response) A.Two imaginary roots1.B.Two complex roots in right half plane2.C.A single root on negative real axis3.D.A single root at origin4. |
| 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-2, C-4, D-1 |
| Answer» B. A-1, B-2, C-3, D-4 | |
| 45. |
Match the following: List I (Symbol in Java comparison operator) List II (Meaning) A.= =1.Greater than or equal toB.! =2.EqualC.> =3.Not equal |
| A. | A-1, B-2, C-3 |
| B. | A-3, B-2, C-1 |
| C. | A-1, B-3, C-2 |
| D. | A-2, B-3, C-1 |
| Answer» E. | |
| 46. |
Match the following: List I (Characteristics) List II (Decrease) A.Paramagnetic1.All dipoles are aligned is one preferred directionB.Ferromagnetic2.Half the dipoles are aligned in opposite direction and have equal magnitudeC.Antiferromagnetic3.Half the dipoles (with equal magnitudes) are aligned in opposite direction to the other half having equal but lower magnitudeD.Ferrimagnetic4.All dipoles have equal magnitude but are randomly oriented |
| A. | A-4, B-3, C-2, D-1 |
| B. | A-4, B-1, C-2, D-3 |
| C. | A-2, B-1, C-4, D-3 |
| D. | A-2, B-3, C-4, D-1 |
| Answer» C. A-2, B-1, C-4, D-3 | |
| 47. |
Match the following: List I (Functional components) List II (Device) A.Error detector1.Three phase FHP Induction motorB.Servo motor2.Synchro transmitter and control transformerC.Amplifier3.Tacho generatorD.Feed back4.Armature controlled FHP dc motor 5.Amplidyne |
| A. | A-2, B-4, C-1, D-5 |
| B. | A-4, B-2, C-5, D-3 |
| C. | A-2, B-4, C-5, D-3 |
| D. | A-1, B-2, C-3, D-5 |
| Answer» D. A-1, B-2, C-3, D-5 | |
| 48. |
Match the following: List I (Power device) List II (Max. frequency) A.Power Bipolar1.MHzB.Power MOSFET2.100 kHzC.SCR3.10 kHzD.Insulated gate bipolar transistor4.1 kHz |
| A. | A-2, B-1, C-3, D-4 |
| B. | A-3, B-4, C-2, D-1 |
| C. | A-3, B-1, C-4, D-2 |
| D. | A-4, B-1, C-3, D-2 |
| Answer» D. A-4, B-1, C-3, D-2 | |
| 49. |
Match the following: List I (Microwave device) List II (Application) A.Reflex Klystron1.Wideband amplificationB.TWT2.Very low power amplificationC.Cavity Klystron3.Low power FM generationD.Maser4.Frequency multiplication |
| A. | A-1, B-2, C-3, D-4 |
| B. | A-4, B-3, C-2, D-1 |
| C. | A-3, B-4, C-1, D-2 |
| D. | A-3, B-1, C-4, D-2 |
| Answer» E. | |
| 50. |
Match the following: List I (Electron spin) List II (Phenomenon) A.‚Üë‚Üë‚Üë‚Üë1.AntiferromagnetismB.‚Üë‚Üì‚Üë‚Üì2.FerrimagnetismC.‚Üë‚Üì‚Üë‚Üì3.Ferromagnetism |
| A. | A-1, B-2, C-3 |
| B. | A-3, B-2, C-1 |
| C. | A-2, B-3, C-1 |
| D. | A-3, B-1, C-2 |
| Answer» E. | |