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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.
| 4351. |
If the transfer function has zeros only on j axis or in left half plane, it is a minimum phase function. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4352. |
In a 5.6 ohms, 10% carbon composition resistor, the colour of the third strip from extreme left is |
| A. | golden |
| B. | silver |
| C. | green |
| D. | black |
| Answer» B. silver | |
| 4353. |
Assertion (A): Most of magnetic circuits have an air gap.Reason (R): An air gap has high reluctance. |
| A. | Both A and R are true and R is correct explanation of A |
| B. | Both A and R are true and R is not the correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» C. A is true but R is false | |
| 4354. |
In an electrochemical process the mass of material deposited at an electrode is proportional to |
| A. | time for which current is passed |
| B. | magnitude of current |
| C. | electric charge through the electrolyte |
| D. | none of the above |
| Answer» D. none of the above | |
| 4355. |
The y parameters of a four terminal network are . A one ohm resistance is connected as shown in figure. The new y parameters are |
| A. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/123-710-3.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/123-710-4.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/123-710-5.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/123-710-2.png"> |
| Answer» B. <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/123-710-4.png"> | |
| 4356. |
What would be the rms value of a sine wave having the same peak value as that of the above mentioned periodic wave? |
| A. | 42.2 V |
| B. | 19 V |
| C. | 38.2 V |
| D. | none |
| Answer» B. 19 V | |
| 4357. |
Which of the following is an I.S.I. symbol of cut-out power? |
| A. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/151-1104-1.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/151-1104-2.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/151-1104-3.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/151-1104-4.png"> |
| Answer» E. | |
| 4358. |
If Fourier transform of f(t) is F(j ), then which pairs of time functions and Fourier transforms are matched f (t + 2) - ej2 F(j )f (-0.5t) - 2F (-2j ) - Select the answer using the following codes |
| A. | 1 and 2 |
| B. | 1 and 3 |
| C. | 2 and 3 |
| D. | 1, 2 and 3 |
| Answer» B. 1 and 3 | |
| 4359. |
In a power system, reactive power is necessary for |
| A. | power transmission |
| B. | stabilising the voltage level |
| C. | counteracting the effect of reactance in the transmission system |
| D. | none of the above |
| Answer» D. none of the above | |
| 4360. |
A unit impulse voltage (t - b) is applied to an inductor with inductance L. The current through L is |
| A. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/93-164-1.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/93-164-2.png"> |
| C. | <span class="root"> (<i>t</i> - <i>b</i>)</span> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/93-164-3.png"> |
| Answer» C. <span class="root"> (<i>t</i> - <i>b</i>)</span> | |
| 4361. |
A periodic voltage has following values for equal time intervals changing suddenly from one value to next, 0, 5, 10, 20, 50, 60, 50, 20, 10, 5, 0, -5, -10 etc. then rms value of the waveform is |
| A. | 31 volt |
| B. | 32 volt |
| C. | insufficient data |
| D. | none |
| Answer» B. 32 volt | |
| 4362. |
If a fuse is higher than required current rating is employed in a circuit, it will |
| A. | blow more frequently since it carries more current |
| B. | afford better protection to the circuit |
| C. | seriously overload the circuit |
| D. | lead to larger maintenance cost |
| Answer» D. lead to larger maintenance cost | |
| 4363. |
If a 'live' conductor of a public supply touches earth metal |
| A. | supply voltage will increase |
| B. | supply voltage will decrease |
| C. | no current will flow |
| D. | current will flow to earth |
| Answer» E. | |
| 4364. |
A series circuit has fixed resistance and variable reactance. The impedance locus will be a straight line parallel to Y-axis. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4365. |
The transfer function is for |
| A. | low pass filter |
| B. | notch filter |
| C. | high pass filter |
| D. | band pass filter |
| Answer» B. notch filter | |
| 4366. |
For the time domain response shown in figure the pole |
| A. | lies on negative real axis |
| B. | lies on positive real axis |
| C. | lies on imaginary axis |
| D. | is complex or imaginary |
| Answer» B. lies on positive real axis | |
| 4367. |
The units of resistivity are ohm-metre. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4368. |
In a series RLC circuit, the resonant frequency is 0 the fractional frequency deviation is defined as |
| A. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/96-225-1.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/96-225-2.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/96-225-3.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/96-225-4.png"> |
| Answer» D. <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/96-225-4.png"> | |
| 4369. |
A n-port network is said to be active if power in the ckt is __________ . |
| A. | P > 0 |
| B. | P < 0 |
| C. | P = 0 |
| D. | P = |
| Answer» C. P = 0 | |
| 4370. |
Assertion (A): An impulse has very high magnitude but very small duration.Reason (R): A pulse function is always rectangular. |
| A. | Both A and R are true and R is correct explanation of A |
| B. | Both A and R are true and R is not the correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» D. A is false but R is true | |
| 4371. |
Transformer coil is an insulator. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4372. |
The active elements on the positive and negative plates of lead acid battery are: |
| A. | lead peroxide and lead |
| B. | lead and lead peroxide |
| C. | lead peroxide and lead sulphate |
| D. | lead and lead |
| Answer» B. lead and lead peroxide | |
| 4373. |
The resonant frequency of a series resonant circuit is |
| A. | arithmetic mean of half power frequencies |
| B. | independent of inductance of the circuit |
| C. | independent of capacitance of the circuit |
| D. | geometric mean of half power frequencies |
| Answer» E. | |
| 4374. |
Twelve resistance each 2 ohm are connected to form a cube, one resistance being in each arm of cube. The resistance between any two diagonally opposite comers is |
| A. | 1 Ω |
| B. | 2 Ω |
| C. | 4 Ω |
| D. | 8 Ω |
| Answer» C. 4 Ω | |
| 4375. |
The voltage induced in a loop of wire rotating in a strong and steady magnetic field is |
| A. | pulsating dc |
| B. | dc |
| C. | rectified ac |
| D. | ac |
| Answer» E. | |
| 4376. |
A two branch parallel resonant circuit has a coil of resistance R and inductance L, in one branch and a capacitors C in the other branch. The source voltage is V, At resonance the circulating current is |
| A. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/109-480-1.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/109-480-2.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/109-480-3.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/109-480-4.png"> |
| Answer» E. | |
| 4377. |
An interrupt in which the external device supplies its address as well as the interrupt is known as |
| A. | vectored interrupt |
| B. | maskable interrupt |
| C. | polled interrupt |
| D. | non-maskable interrupt |
| Answer» B. maskable interrupt | |
| 4378. |
What is the decimal equivalent of the binary number shown in fourth row? |
| A. | 79 |
| B. | 97 |
| C. | 117 |
| D. | 127 |
| Answer» C. 117 | |
| 4379. |
The output of basic DTL configuration is |
| A. | low when one of the input is high |
| B. | low when all inputs are high |
| C. | high when all inputs are high |
| D. | high when all inputs are low |
| Answer» C. high when all inputs are high | |
| 4380. |
figure shows three pulse train inputs to a 3-input AND gate. Assuming positive logic, the output signal obtained in figure would be |
| A. | <img src="/_files/images/electronics-and-communication-engineering/digital-electronics/57-974-1.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/digital-electronics/57-974-2.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/digital-electronics/57-974-3.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/digital-electronics/57-974-4.png"> |
| Answer» C. <img src="/_files/images/electronics-and-communication-engineering/digital-electronics/57-974-3.png"> | |
| 4381. |
In 8085 microprocessor, what is the memory word size? |
| A. | 6 bits |
| B. | 8 bits |
| C. | 12 bits |
| D. | 16 bits |
| Answer» B. 8 bits | |
| 4382. |
Substitution theorem applies to |
| A. | Linear network |
| B. | Non linear network |
| C. | Linear time invariant network |
| D. | Any network |
| Answer» D. Any network | |
| 4383. |
In figure, i = Im sin t. If v = 0, = |
| A. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/111-513-2.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/111-513-3.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/111-513-4.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/111-513-5.png"> |
| Answer» B. <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/111-513-3.png"> | |
| 4384. |
Transient current in a loss free LC circuit when excited from an ac source is an __________ sine wave. |
| A. | undamped |
| B. | over damped |
| C. | under damped |
| D. | critically damped |
| Answer» D. critically damped | |
| 4385. |
A function f(t) = k is |
| A. | stable |
| B. | marginal stable |
| C. | unstable |
| D. | none |
| Answer» C. unstable | |
| 4386. |
If f(t) = (t), F(s) = |
| A. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/109-491-1.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/109-491-2.png"> |
| C. | 1 |
| D. | <i>s</i> |
| Answer» B. <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/109-491-2.png"> | |
| 4387. |
In figure, the current I is |
| A. | 1 A |
| B. | 2 A |
| C. | 4 A |
| D. | 8 A |
| Answer» B. 2 A | |
| 4388. |
Figure shows the variation of Z( ) for a positive real function. The function is |
| A. | RC impedance |
| B. | RL impedance |
| C. | RLC impedance |
| D. | Reactance function |
| Answer» B. RL impedance | |
| 4389. |
The voltage drop per ampere-metre of an aluminium conductor is higher as compared to a copper conductor of the same size due to its higher |
| A. | insulation resistance |
| B. | resistivity |
| C. | conductivity |
| D. | current density |
| Answer» C. conductivity | |
| 4390. |
The sum of positive real function is positive real. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4391. |
Assertion (A): KCL is dual of KVL.Reason (R): Node is dual of mesh. |
| A. | Both A and R are true and R is correct explanation of A |
| B. | Both A and R are true and R is not the correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» B. Both A and R are true and R is not the correct explanation of A | |
| 4392. |
Figure shows the V-i characteristics of a material. The material is likely to be |
| A. | copper |
| B. | carbon |
| C. | zinc oxide |
| D. | rubber |
| Answer» D. rubber | |
| 4393. |
In the circuit, the value of the voltage source E is |
| A. | -22 V |
| B. | -12 V |
| C. | +12 V |
| D. | -10 V |
| Answer» B. -12 V | |
| 4394. |
Which is correct for a driving point function? |
| A. | If the real part of a pole or zero is zero, that pole must be simple |
| B. | If the real part of a pole or zero is zero, that pole or zero must be simple |
| C. | If the real part of a zero is zero, that pole or zero must be simple |
| D. | If the real part of a zero is zero that zero must be simple |
| Answer» C. If the real part of a zero is zero, that pole or zero must be simple | |
| 4395. |
For the circuit of figure |
| A. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/105-411-2.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/105-411-3.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/105-411-4.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/105-411-5.png"> |
| Answer» C. <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/105-411-4.png"> | |
| 4396. |
When a lead acid cell is in fully charged condition the specific gravity of electrolyte is about 1.22. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4397. |
The transient currents are due to |
| A. | resistance of the circuit |
| B. | impedance of the circuit |
| C. | voltage applied to the circuit |
| D. | changes in stored energy in inductors and capacitors |
| Answer» E. | |
| 4398. |
In ZRC(s) has a pole at s = 0, the first element in first Foster realization is |
| A. | a capacitor |
| B. | a resistor |
| C. | R-C in series |
| D. | either a capacitor or resistor |
| Answer» B. a resistor | |
| 4399. |
A Two port network has V1 = 24 I1 + 8 I2 and V2 = 8 I1 + 32 I2 which of the following networks is represented by above equation? |
| A. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/121-681-1.png"> |
| B. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/121-681-2.png"> |
| C. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/121-681-3.png"> |
| D. | <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/121-681-4.png"> |
| Answer» C. <img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/121-681-3.png"> | |
| 4400. |
For the network in figure, which of the following expressions gives the value of net inductance between terminals A and B L1 L2L1 L2 ML1 L2 - 2ML1 L2 2M Select the answer using the following codes |
| A. | 1 only |
| B. | 1 and 2 |
| C. | 3 and 4 |
| D. | 2 and 4 |
| Answer» C. 3 and 4 | |