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MCQOPTIONS
This section includes 9294 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 5001. |
A coil has a designed for high Q performance at a rated voltage and a specified frequency. If the frequency of operation is doubled, and the coil is operated at the same rated voltage, then the Q factor and the active power P consumed by the coil will be affected as follows. |
| A. | P is doubled, Q is halved |
| B. | P is halved, Q is doubled |
| C. | P remains constant, Q is doubled |
| D. | P decreases 4 times, Q is doubled |
| Answer» E. | |
| 5002. |
Find the number of loop equation and number of possible trees for the given graph. |
| A. | 7, 2097152 |
| B. | 7, 262144 |
| C. | 7.5764801 |
| D. | 6, 823543 |
| Answer» C. 7.5764801 | |
| 5003. |
For the power amplifier circuit shown below, the maximum power dissipated by both output transistor is |
| A. | 9.66 W |
| B. | 30.11 W |
| C. | 31.66 W |
| D. | 33.66 W |
| Answer» D. 33.66 W | |
| 5004. |
An antisymmetric filter having odd number of coefficient may have a performance as |
| A. | low pass |
| B. | high pass |
| C. | band pass |
| D. | all pass |
| Answer» E. | |
| 5005. |
A periodic rectangular signal, x(t) has the waveform shown in the given figure. Frequency of the fifth harmonic of its spectrum is __________ |
| A. | 200 Hz |
| B. | 250 Hz |
| C. | 400 Hz |
| D. | 1250 Hz |
| Answer» E. | |
| 5006. |
The probability density function of a random variable x is as shown. The value of A is: |
| A. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-746-42-3.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-56-3.94-3.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-749-78-2.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-749-78-3.png"> |
| Answer» D. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-749-78-3.png"> | |
| 5007. |
The logic realized by the circuit shown in figure below is |
| A. | F = A - C |
| B. | F = A + C |
| C. | F = B ⊙ C |
| D. | F = B C |
| Answer» C. F = B ⊙ C | |
| 5008. |
A two port network is described by the relation V1 = 2I1 + 3V2 I2 = - I1 + 2V2 Then Z-parameter of such network is |
| A. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-745-28-1.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-745-28-2.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-745-28-3.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-745-28-4.png"> |
| Answer» E. | |
| 5009. |
The z-transform of a signal converges if and only if |
| A. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/10-03-31-1.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/10-03-31-2.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/10-03-31-3.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/10-03-31-4.png"> |
| Answer» B. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/10-03-31-2.png"> | |
| 5010. |
If the characteristic equation of a closed loop system is s2 + 2s + 2, then the system is : |
| A. | over damped |
| B. | critically damped |
| C. | under damped |
| D. | undamped |
| Answer» D. undamped | |
| 5011. |
The star equivalent C1 C2, C3 of the delta network is respectively |
| A. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/13-03-25-1.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/13-03-25-2.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/13-03-25-3.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/13-03-25-4.png"> |
| Answer» B. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/13-03-25-2.png"> | |
| 5012. |
Calculate the stability factor and change in Ic from 25 C to 100 C for, = 50, RB/RE = 250, ICO = 19.9 nA for emitter bias configuration |
| A. | 42.553, 0.85 F |
| B. | 40.91, 0.58 F |
| C. | 38.53, 0.85 F |
| D. | 41.10, 0.39 F |
| Answer» B. 40.91, 0.58 F | |
| 5013. |
Consider circuit with 4 : 16 Demux below: Now:f1 = (2, 6, 11, 12)f2 = (2, 5, 14)= p(2, 3, 4, 5, 9, 13, 14) |
| A. | only 1 and 3 are correct |
| B. | only 1 is correct |
| C. | only 2 is correct |
| D. | 2 and 3 are correct |
| Answer» E. | |
| 5014. |
The value of the integral is |
| A. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-744-21-2.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-128-6.72-3.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-744-21-3.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-744-21-4.png"> |
| Answer» B. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-128-6.72-3.png"> | |
| 5015. |
For a series resonant circuit at low frequency circuit impedance is __________ and at high frequency circuit impedance is __________ Fill in the blanks respectively |
| A. | capacitive, inductive |
| B. | inductive, capacitive |
| C. | resistive, inductive |
| D. | capacitive, resistive |
| Answer» B. inductive, capacitive | |
| 5016. |
Find the maximum power that can be delivered to a load |
| A. | 0.025 W |
| B. | 2.5 W |
| C. | 2.5 W |
| D. | 0.25 W |
| Answer» E. | |
| 5017. |
For a integrator circuit, Ri = 100 K , CF = 10 F. The input is a step dc voltage as shown below. Its output will be |
| A. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/2-760-82-2.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/2-760-82-3.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/2-760-82-4.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/2-760-82-5.png"> |
| Answer» C. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/2-760-82-4.png"> | |
| 5018. |
The circuit is shown in figure. The current transfer ratio , is |
| A. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-744-27-3.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-744-27-4.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-744-27-5.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-744-27-6.png"> |
| Answer» C. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/1-744-27-5.png"> | |
| 5019. |
For the network shown below, the Thevenin voltage and RTH is equal to __________ |
| A. | 0 V, 58.82 |
| B. | 0 V, 96.774 |
| C. | 0 V, 3 K |
| D. | None of these |
| Answer» B. 0 V, 96.774 | |
| 5020. |
A system has 12 poles or 2 zeros. Its high frequency asymptote in its magnitude plot has slope of |
| A. | -200 dB/decade |
| B. | -240 dB/decade |
| C. | -280 dB/decade |
| D. | -320 dB/decade |
| Answer» B. -240 dB/decade | |
| 5021. |
(1 2 1)x = (1 0 0)4 Then x is equal to |
| A. | 2 |
| B. | 3 |
| C. | 5 |
| D. | does not exist |
| Answer» C. 5 | |
| 5022. |
The maximum percent overshoot with maximum value of first overshoot as 3.5 V and steady state value as 2.575 V is |
| A. | 35.92% |
| B. | 26.43% |
| C. | 57.61% |
| D. | 15.24% |
| Answer» B. 26.43% | |
| 5023. |
Find Vo(t) for the following circuit.Data: L = 1 H, C = 1 F, R1 = R2 = 1 and zero initial conditions. |
| A. | 0 V |
| B. | 5 V |
| C. | 3 V |
| D. | 2 V |
| Answer» B. 5 V | |
| 5024. |
An XOR gate with 8 variable is as follows: A B C D E F G HThe number of minterms in the Boolean expression is |
| A. | 255 |
| B. | 127 |
| C. | 128 |
| D. | 256 |
| Answer» D. 256 | |
| 5025. |
The figure shown below is designed to act as a constant current source across the load resistor. The of transistor is 50. What is the value of load current? |
| A. | 1.96 mA |
| B. | 2 mA |
| C. | 2.04 mA |
| D. | None |
| Answer» B. 2 mA | |
| 5026. |
For a given magnetic material operating in linear mode B = 0.06 T. Assume permeability = 51, then magnetization is: |
| A. | 44836 A/m |
| B. | 46834 A/m |
| C. | 946 A/m |
| D. | 936 A/m |
| Answer» C. 946 A/m | |
| 5027. |
A signal with 10 V ranged and 1 KHz band width is being digitized using a sample and hold circuit and a 10 bit quantizer. The minimum sampling rate is : |
| A. | 62831.9 V/sec |
| B. | 125663.8 V/sec |
| C. | 31415.95 V/sec |
| D. | None |
| Answer» B. 125663.8 V/sec | |
| 5028. |
The circuit below represents function X(A, B, C, D) as: |
| A. | (5, 8, 13, 14) |
| B. | (0, 1, 2, 3, 4, 6, 7, 8, 10, 11, 12) |
| C. | (5, 9, 13, 14) |
| D. | (0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 15) |
| Answer» D. (0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 15) | |
| 5029. |
The distance between target and radar is reduced to half. Power received increases by |
| A. | 1/16 |
| B. | 1/4 |
| C. | 4 times |
| D. | 16 times |
| Answer» E. | |
| 5030. |
The Causal system given below is __________ H(z) = 6 + z-1 - z-2 |
| A. | maximum phase |
| B. | minimum phase |
| C. | mixed phase |
| D. | none of these |
| Answer» C. mixed phase | |
| 5031. |
The following circuit is implementation of Sum of full adderCarry of half adderDifference of full subtractor |
| A. | (i) only |
| B. | (iii) only |
| C. | (ii) only |
| D. | (i) and (ii) |
| Answer» E. | |
| 5032. |
The Thevenin impedance Zth between the nodes P and Q in the following circuit is |
| A. | 1 |
| B. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/5-02-21-2.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/5-02-21-3.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/5-02-21-4.png"> |
| Answer» B. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/5-02-21-2.png"> | |
| 5033. |
The truth table corresponding to the given input digital gate : |
| A. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/15-03-29-1.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/15-03-29-2.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/15-03-29-3.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/15-03-29-4.png"> |
| Answer» E. | |
| 5034. |
An image uses 512 x 512 picture elements. Each of the picture elements can take any of the 8 distinguishable intensity levels. The maximum entropy in the above image will be |
| A. | 2097152 bits |
| B. | 648 bits |
| C. | 786432 bits |
| D. | 144 bits |
| Answer» D. 144 bits | |
| 5035. |
A tachometer has a sensitivity of 4 V/1000 rpm. Express the gain constant of the tachometer in the units volts/(rad/sec). |
| A. | 0.0489 |
| B. | 0.0381 |
| C. | 2 |
| D. | none of these |
| Answer» C. 2 | |
| 5036. |
The logic function f(A, B, C) = m(0, 2, 4, 5, 6) can be represented by : |
| A. | 1 only |
| B. | 1, 2 only |
| C. | 1, 3 only |
| D. | 1, 2 and 3 |
| Answer» C. 1, 3 only | |
| 5037. |
In amplitude modulation, carrier signals A cos t has its amplitude A modulated in proportion with message bearing (low frequency) signal m(t). The magnitude of m(t) is chosen to be __________ . |
| A. | less than 1 |
| B. | less than or equal to 1 |
| C. | more than 1 |
| D. | none of these |
| Answer» C. more than 1 | |
| 5038. |
For real values of x, the minimum value of the function f(x) exp (x) + exp (- x) is |
| A. | 2 |
| B. | 1 |
| C. | 0.5 |
| D. | 0 |
| Answer» B. 1 | |
| 5039. |
What is the approximate steady state current in the above circuit? |
| A. | 50 A |
| B. | 25 A |
| C. | 5 A |
| D. | 1 A |
| Answer» D. 1 A | |
| 5040. |
The following graph, the number of trees (P) and the number of cut-sets (Q) are |
| A. | P = 2, Q = 2 |
| B. | P = 2, Q = 6 |
| C. | P = 4, Q = 6 |
| D. | P = 4, Q = 10 |
| Answer» B. P = 2, Q = 6 | |
| 5041. |
System is at rest for t < 0. Vs = sin 2t. Determine v(t) for t greater than zero. |
| A. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/3-04-42-1.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/3-04-42-2.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/3-04-42-3.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/3-04-42-4.png"> |
| Answer» E. | |
| 5042. |
Following figure represents |
| A. | AND |
| B. | OR |
| C. | NAND |
| D. | NOT |
| Answer» D. NOT | |
| 5043. |
For parallel RLC circuit, which one of the following statements is NOT correct? |
| A. | The bandwidth of the circuit deceases if R is increased |
| B. | The bandwidth of the circuit remains same if L is increased |
| C. | At resonance, input impedance is a real quantity |
| D. | At resonance, the magnitude of input impedance attains its minimum value |
| Answer» E. | |
| 5044. |
The practical resonant circuit is shown in above figure. Find the expression for the resonant frequency o |
| A. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/13-04-33-1.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/13-04-33-2.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/13-04-33-3.png"> |
| D. | None of these |
| Answer» C. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/13-04-33-3.png"> | |
| 5045. |
Which one of the following is used as the interface chip for data transmission between 8086 and a 16-bit ADC? |
| A. | 8259 |
| B. | 8255 |
| C. | 8253 |
| D. | 8251 |
| Answer» C. 8253 | |
| 5046. |
Determine the correctness or otherwise of the following Assertion [a] and the Reason [r].Assertion : FETs are more suitable at the input stages compared to BJTsReason: A FET has lower output impedance than a BJT. |
| A. | Both [a] and [r] are true and [r] is the correct reason for [a] |
| B. | Both [a] and [r] are true but [r] is not the correct reason for [a] |
| C. | Both [a] and [r] are false |
| D. | Both [a] and [r] are true |
| Answer» C. Both [a] and [r] are false | |
| 5047. |
What are the ultimate purpose of minimizing logic expressions? To get small size expression.To reduce the number of variables in the given expression.To implement the function of the logic expression with least hardware.To reduce the expression for making it feasible for hardware implementation. Select the correct answer from the codes given below: |
| A. | 1 only |
| B. | 2 and 3 |
| C. | 3 only |
| D. | 3 and 4 |
| Answer» E. | |
| 5048. |
The load end of a quarter wave transformer gets disconnected thereby causing an open-circuited load. What will be the input impedance of the transformer? |
| A. | Zero |
| B. | Infinite |
| C. | Finite and Positive |
| D. | Finite and Negative |
| Answer» B. Infinite | |
| 5049. |
Which of the following does not show non-linear V-I characteristics? |
| A. | Schottky diode |
| B. | Tunnel diode |
| C. | Thermister, at a fixed temperature |
| D. | <i>p-n</i> |
| E. | junction diode |
| Answer» D. <i>p-n</i> | |
| 5050. |
The op-amp used in nonlinear mode is |
| A. | integrators |
| B. | active filters |
| C. | Schmitt triggers |
| D. | instrumentation amplifiers |
| Answer» C. Schmitt triggers | |