Explore topic-wise MCQs in Electronics & Communication Engineering.

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.

201.

Match the following: List I List II A.CLP1.Displays DOS version being usedB.MSAV2.Partitions hard diskC.F DISK3.Anti-virus programD.VER4.Cleans screen

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-2, B-1, C-4, D-3
Answer» C. A-2, B-3, C-4, D-1
Discussion
202.

Match the following: List I List II A.Resistance1.M-1L-2T2I2B.Inductance2.ML2T-2I-2C.Capacitance3.M-1L-2T4I2D.Reluctance4.ML2T-3I-2

A. A-1, B-2, C-3, D-4
B. A-2, B-1, C-3, D-4
C. A-4, B-2, C-3, D-1
D. A-2, B-4, C-3, D-1
Answer» D. A-2, B-4, C-3, D-1
Discussion
203.

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
Discussion
204.

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.
Discussion
205.

Match the following: List I List II A.Tunnel diode1.is also known as hot carrier diodeB.PIN diode2.used with reverse biasC.Zener diode3.has an intrinsic layerD.Schottky diode4.v-i curve has shape of N

A. A-2, B-3, C-1, D-4
B. A-4, B-3, C-2, D-1
C. A-3, B-2, C-4, D-1
D. A-1, B-2, C-3, D-4
Answer» C. A-3, B-2, C-4, D-1
Discussion
206.

Match the following: List I List II A.Tangent galvanometer1.Can be used for dc onlyB.Moving coil instrument2.Integrating instrumentC.Household energy meter3.Used for voltage measurement onlyD.Electrostatic instrument4.Absolute instrument

A. A-1, B-2, C-3, D-4
B. A-4, B-1, C-2, D-3
C. A-1, B-2, C-4, D-3
D. A-4, B-1, C-3, D-2
Answer» C. A-1, B-2, C-4, D-3
Discussion
207.

Match the following: List I (Oscillator) List II (Features) A.Wien Bridge1.RF oscillator, uses two inductors and one capacitorB.Colpitt's2.LC oscillator for radio frequencies uses three capacitances and one inductanceC.Hartley3.RC oscillator for audio frequenciesD.Clapp4.RF oscillator, uses two capacitances and one inductance

A. A-2, B-1, C-4, D-3
B. A-2, B-4, C-1, D-3
C. A-3, B-4, C-1, D-2
D. A-3, B-1, C-4, D-2
Answer» D. A-3, B-1, C-4, D-2
Discussion
208.

List I (Parameters) List II (Values) A.h221.rb + reB.h112.acbC.h213.

A. A-3, B-1, C-2
B. A-1, B-3, C-2
C. A-2, B-3, C-1
D. A-3, B-2, C-1
Answer» B. A-1, B-3, C-2
Discussion
209.

Match the following: List I (Laws of Boolean) List II (Relation algebra) A.Distributive law1.x + x = xB.DeMorgans law2.x(y + z) = xy + xzC.Idempotent law3.(x) = xD.Involution law4.(x + y) = xy

A. A-1, B-2, C-3, D-4
B. A-2, B-4, C-1, D-3
C. A-3, B-4, C-1, D-2
D. A-4, B-1, C-2, D-3
Answer» C. A-3, B-4, C-1, D-2
Discussion
210.

Match the following: List I List II A.Word wrap1.interleaved execution of two or more programs by the same computerB.Client2.automatically moves a word to the next line if it does not fit in the current lineC.Multitasking3.an application receiving dataD.Landscape4.orientation of worksheet

A. A-1, B-2, C-3, D-4
B. A-2, B-3, C-4, D-1
C. A-4, B-3, C-2, D-1
D. A-2, B-3, C-1, D-4
Answer» E.
Discussion
211.

Match the following: List I List II A.VOH(min)1.2.4 VB.VIH(min)2.1.5 VC.VOL(max)3.0.4 V 4.2.0 V 5.0.8 V

A. A-1, B-3, C-4
B. A-1, B-4, C-3
C. A-5, B-4, C-3
D. A-1, B-5, C-2
Answer» C. A-5, B-4, C-3
Discussion
212.

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
Discussion
213.

Match the following: List I List II A.Zener diode1.used in seven segment displayB.Tunnel diode2.used in voltage regulator circuitsC.LED3.used is solar energy utilizationD.Photovoltaic cell4.used in digital circuits

A. A-1, B-3, C-2, D-4
B. A-2, B-3, C-1, D-4
C. A-2, B-4, C-1, D-3
D. A-3, B-2, C-4, D-1
Answer» D. A-3, B-2, C-4, D-1
Discussion
214.

Match the following: List I (FET Parameters) List II (Typical Values) A.gm for JFET1.25 kWB.rd for JFET2.0.01 siemenC.rd for MOSFET3.0.5 mWD.gg for JFET4.10-8 siemen

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-4, B-3, C-2, D-1
Answer» C. A-4, B-2, C-3, D-1
Discussion
215.

Match the following: List I (fk) List II [F(z)] A.11.B.kn2.(1 - az-1)-1C.ak3.- ln (1 - z-1)-1D.4.(1 - z-1)-1

A. A-1, B-4, C-2, D-3
B. A-2, B-3, C-1, D-4
C. A-4, B-1, C-2, D-3
D. A-1, B-4, C-3, D-2
Answer» D. A-1, B-4, C-3, D-2
Discussion
216.

Match the following: List I List II A.1.B.2.C.3.D.4. 5.

A. A-2, B-4, C-3, D-5
B. A-3, B-4, C-2, D-5
C. A-5, B-2, C-3, D-1
D. A-3, B-1, C-2, D-4
Answer» C. A-5, B-2, C-3, D-1
Discussion
217.

Match the following: List I (Comm.services) List II (Bandwidth) A.AM broadcast1.10 kHzB.Telephone2.4 kHzC.wide-band FM3.200 kHzD.TV4.7 MHz

A. A-1, B-2, C-3, D-4
B. A-3, B-4, C-1, D-2
C. A-1, B-4, C-3, D-2
D. A-3, B-2, C-1, D-4
Answer» B. A-3, B-4, C-1, D-2
Discussion
218.

Match the following: List I (Circuit) List II (Characteristics) A.Darlington pair1.uses pnp and npn transistors used as power amplifierB.CB amplifier2.Voltage gain nearly 1 and high input impedanceC.Cascade amplifier3.low input impedance used for high frequency isolation

A. A-1, B-2, C-3
B. A-2, B-3, C-1
C. A-2, B-1, C-3
D. A-3, B-1, C-2
Answer» C. A-2, B-1, C-3
Discussion
219.

Match the following: List I (Camera pick up tubes) List II (Developed by) A.CCD charger1.ToshibaB.New vicon2.PhilipsC.Plumbicon3.MatushitaD.Chalnicon4.RCA

A. A-3, B-4, C-1, D-2
B. A-4, B-3, C-2, D-1
C. A-4, B-3, C-1, D-2
D. A-1, B-2, C-3, D-4
Answer» C. A-4, B-3, C-1, D-2
Discussion
220.

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.
Discussion
221.

Match the following: Microwave Measuring Instruments Measurements EffectedA.Bolometer1.Reflection coefficientsB.VSWR meter2.Half power beam widthsC.Cavity wave meter3.Microwave powerD.Pattern recorder4.Microwave frequency

A. A-2, B-1, C-4, D-3
B. A-3, B-1, C-4, D-2
C. A-2, B-4, C-1, D-3
D. A-3, B-4, C-1, D-2
Answer» C. A-2, B-4, C-1, D-3
Discussion
222.

Match the following: List I List II A.451.10110100B.902.11010010C.1803.01011010D.2104.00101101 5.10101000

A. A-3, B-4, C-5, D-2
B. A-4, B-3, C-5, D-2
C. A-4, B-3, C-1, D-2
D. A-3, B-4, C-2, D-1
Answer» C. A-4, B-3, C-1, D-2
Discussion
223.

Match the following: List I (Operator in C) List II (Priority of Operation) A.!1.1B.< >2.2C.‚àó3.3D.=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
Discussion
224.

Match the following: List I (Instrument) List II (Parameters) A.Moving coil galvanometer1.High inertia, soft spring controlB.Ballistic galvanometer2.No control, high dampingC.Vibration galvanometer3.Soft spring control, critical dampingD.Moving coil flux meter4.Low inertia, tuned spring control

A. A-4, B-2, C-3, D-1
B. A-1, B-3, C-2, D-4
C. A-2, B-1, C-4, D-3
D. A-3, B-1, C-4, D-2
Answer» E.
Discussion
225.

Match the following: List I List II A.RC coupled amplifier1.Very low driftB.Tuned amplifier2.Flat frequency response from zero frequency onwardsC.Chopper stabilized amplifier3.Flat frequency response with upper and lower cut off frequencyD.DC amplifier4.Peak in gain frequency response

A. A-4, B-3, C-1, D-2
B. A-3, B-4, C-2, D-1
C. A-3, B-4, C-1, D-2
D. A-4, B-3, C-2, D-1
Answer» D. A-4, B-3, C-2, D-1
Discussion