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MCQOPTIONS
This section includes 2095 Mcqs, each offering curated multiple-choice questions to sharpen your Php knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
Plasmids confer phenotypes to the host organism, some of the plasmids to which these phenotypic traits have not yet been ascribed are called ________ |
| A. | Unique plasmids |
| B. | Resistance plasmid |
| C. | Q-plasmids |
| D. | Cryptic plasmids |
| Answer» E. | |
| 452. |
Obtain the transform impedance of the network shown below. |
| A. | (6s-8)/(4s2+19s-4) |
| B. | (6s+8)/(4s2+19s+4) |
| C. | (6s+8)/(4s2-19s+4) |
| D. | (6s-8)/(4s2+19s+4) |
| Answer» C. (6s+8)/(4s2-19s+4) | |
| 453. |
Determine the admittance parallel combination of the last elements after replacing with (3s+4)/2s(s+4) is? |
| A. | (4s2-19s+4)/(6s-8) |
| B. | (4s2+19s-4)/(6s+8) |
| C. | (4s2+19s-4)/(6s-8) |
| D. | (4s2+19s+4)/(6s+8) |
| Answer» E. | |
| 454. |
The series combination of the last elements after replacing 1/s and 1/4Ω with 1/(S+4) is? |
| A. | (3s+4)/2s(s-4) |
| B. | (3s-4)/2s(s-4) |
| C. | (3s+4)/2s(s+4) |
| D. | (3s-4)/2s(s+4) |
| Answer» D. (3s-4)/2s(s+4) | |
| 455. |
The impedance of the last two elements in the parallel combination after transformation in the circuit shown below is? |
| A. | 1/(s+4) |
| B. | 1/(s+3) |
| C. | 1/(s+2) |
| D. | 1/(s+1) |
| Answer» B. 1/(s+3) | |
| 456. |
Obtain the admittance of the last two elements in the parallel combination after transformation in the circuit shown below. |
| A. | 1+s |
| B. | 2+s |
| C. | 3+s |
| D. | 4+s |
| Answer» E. | |
| 457. |
The current flowing in the following circuit is? |
| A. | (V1(S)-LI0-V0/S)/(R+LS+1/CS) |
| B. | (V1(S)-LI0+V0/S)/(R+LS+1/CS) |
| C. | (V1(S)+LI0+V0/S)/(R+LS+1/CS) |
| D. | (V1(S)+LI0-V0/S)/(R+LS+1/CS) |
| Answer» E. | |
| 458. |
The value of the total impedance after replacing the inductor and capacitor is? |
| A. | R-LS-1/CS |
| B. | R-LS+1/CS |
| C. | R+LS+1/CS |
| D. | R+LS-1/CS |
| Answer» D. R+LS-1/CS | |
| 459. |
The value of the total voltage after replacing the inductor and capacitor is? |
| A. | V1(S)-LI0-V0/S |
| B. | V1(S)+LI0-V0/S |
| C. | V1(S)+LI0+V0/S |
| D. | V1(S)-LI0+V0/S |
| Answer» C. V1(S)+LI0+V0/S | |
| 460. |
In the circuit shown below, the capacitor is replaced by a transform impedance of __________ with an initial voltage ___________ |
| A. | 1/Cs, V0/S |
| B. | 1/Cs, I0/S |
| C. | Cs, I0/S |
| D. | Cs, V0/S |
| Answer» B. 1/Cs, I0/S | |
| 461. |
In the circuit shown below, switch K is moved from position to position 2 at time t = 0. At time t = 0-, the current in the inductor is I0 and the voltage at the capacitor is V0. The inductor is represented by a transform impedance _________ in series with a voltage source __________ |
| A. | Ls, L V0 |
| B. | Ls, LI0 |
| C. | 1/Ls, LI0 |
| D. | 1/Ls, L V0 |
| Answer» B. Ls, LI0 | |
| 462. |
2RCH2CH2 + NO2 ——–> HNO2 + RCH=CH2 what is the name of this reaction? |
| A. | Paraffin formation |
| B. | Olefin formation |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» C. All of the mentioned | |
| 463. |
What is an Alkyl radical?a) -CH3b) -C2H5c) -C3H7d) All of the mentioned 9.The Liquid phase nitration is of less importance than the gas phase nitration because of ? |
| A. | -CH3b) -C2H5c) -C3H7d) All of the mentioned 9.The Liquid phase nitration is of less importance than the gas phase nitration because of ?a) Low yield |
| B. | -C2H5c) -C3H7d) All of the mentioned 9.The Liquid phase nitration is of less importance than the gas phase nitration because of ?a) Low yieldb) Lower conversion |
| C. | -C3H7d) All of the mentioned 9.The Liquid phase nitration is of less importance than the gas phase nitration because of ?a) Low yieldb) Lower conversionc) Occurrence of unwanted side reactions |
| D. | All of the mentioned 9.The Liquid phase nitration is of less importance than the gas phase nitration because of ?a) Low yieldb) Lower conversionc) Occurrence of unwanted side reactionsd) All of the mentionedView Answer |
| Answer» E. | |
| 464. |
The temperature coefficients for hydrogen substitution are in the order primary > Secondary > Tertiary. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 465. |
The paraffinic are affected by the attack of ? |
| A. | Electrophile |
| B. | Nucleophile |
| C. | Free radical |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 466. |
Strong coast-parallel oscillating tidal currents are found in ______ |
| A. | India |
| B. | United States |
| C. | China |
| D. | Australia |
| Answer» D. Australia | |
| 467. |
What is dynamic tidal power? |
| A. | A theoretical technology exploiting potential energy of tides |
| B. | A theoretical technology exploiting potential and kinetic energy of tides |
| C. | A practical technology exploiting kinetic and potential energy of tides |
| D. | A practical technology exploiting thermal energy of tides |
| Answer» C. A practical technology exploiting kinetic and potential energy of tides | |
| 468. |
Both horizontal and vertical turbines are used to harness energy from tides. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 469. |
Which of the following is similar to the working of tidal stream generator? |
| A. | Geothermal turbine |
| B. | Heat pump |
| C. | Anaerobic digestion |
| D. | Wind turbine |
| Answer» E. | |
| 470. |
How does a tide mill work? |
| A. | By storing the water and creating a difference in water level |
| B. | By storing the water when the tide is low and releasing it through a turbine when the tide is high |
| C. | By storing the water when the tide is high and releasing it through a turbine when the tide is low |
| D. | By using the running water of a tide |
| Answer» D. By using the running water of a tide | |
| 471. |
What is a tide mill? |
| A. | A dam to store the tide |
| B. | A water mill driven by tidal rise and fall |
| C. | A barrage |
| D. | A lagoon |
| Answer» C. A barrage | |
| 472. |
Bulges of water are called high tides. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 473. |
On which two sides of the earth do the tidal forces cause water to bulge out? |
| A. | Both sides closest to moon |
| B. | Both sides farthest from moon |
| C. | Both sides facing the sun |
| D. | Side closest to the moon and farthest from the moon |
| Answer» E. | |
| 474. |
How many low tides occur every day? |
| A. | One |
| B. | Five |
| C. | Two |
| D. | Four |
| Answer» D. Four | |
| 475. |
How many high tides occur every day? |
| A. | One |
| B. | Two |
| C. | Four |
| D. | Three |
| Answer» C. Four | |
| 476. |
Tidal power is renewable because _________ |
| A. | tide falls and rises without fuel |
| B. | tide falls and rises with fuel |
| C. | tide neither falls nor rises without fuel |
| D. | tide neither falls nor rises with fuel |
| Answer» B. tide falls and rises with fuel | |
| 477. |
Tidal lagoon is _______ |
| A. | unidirectional |
| B. | unpredictable |
| C. | the same as tidal stream |
| D. | bi-directional |
| Answer» E. | |
| 478. |
Which of the following steps best describes the working of tidal lagoons? |
| A. | Floods → generator turbines → turbine wicket gates → lagoon → difference in water level between lagoon and sea |
| B. | Floods → turbine wicket gates → generator turbines → lagoon → difference in water level between lagoon and sea |
| C. | Floods → turbine wicket gates → lagoon → difference in water level between lagoon and sea → generator turbines |
| D. | Turbine wicket gates → floods → lagoon → difference in water level between lagoon and sea → generator turbines |
| Answer» D. Turbine wicket gates → floods → lagoon → difference in water level between lagoon and sea → generator turbines | |
| 479. |
How does a tidal lagoon work? |
| A. | By storing sea water |
| B. | By creating a difference in water levels |
| C. | By placing the turbine in the running water |
| D. | By creating barrages |
| Answer» C. By placing the turbine in the running water | |
| 480. |
What is a tidal lagoon? |
| A. | A man-made structure that spans the area of coastline with a high tidal range |
| B. | A man-made structure that spans the entire coastline |
| C. | A barrage |
| D. | A fast-flowing water body caused due to tides |
| Answer» B. A man-made structure that spans the entire coastline | |
| 481. |
To reduce the size mismatch, test length is minimized. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 482. |
Upper bound fault is the fault with detectability |
| A. | 0 |
| B. | 1 |
| C. | maximum |
| D. | minimum |
| Answer» C. maximum | |
| 483. |
With a test sequence of length zero, fault coverage is |
| A. | maximum |
| B. | 1 |
| C. | 0 |
| D. | cannot be determined |
| Answer» D. cannot be determined | |
| 484. |
In pseudo-random testing, the test length should be ________ the exhaustive test. |
| A. | lesser than |
| B. | greater than |
| C. | more than |
| D. | none of the mentioned |
| Answer» B. greater than | |
| 485. |
Pseudo random testing can determine the test length. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 486. |
Which of the following method is used to delete records in LINQ? |
| A. | DeleteOn |
| B. | Delete |
| C. | DeleteOnSubmit |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 487. |
DataContext object is constructed in LINQ to SQL using _____________ |
| A. | NorthwindDataContext db = new malloc NorthwindDataContext(); |
| B. | NorthwindDataContext db = new NorthwindDataContext(); |
| C. | NorthwindDataContext db = new NorthwindData(); |
| D. | None of the mentioned |
| Answer» C. NorthwindDataContext db = new NorthwindData(); | |
| 488. |
LINQ to SQL in SQL Server fully supports ____________ |
| A. | Transactions |
| B. | Functions |
| C. | Stored Procedures |
| D. | All of the mentioned |
| Answer» E. | |
| 489. |
Common data rates of IEEE 802.11 OFDM are ____________ |
| A. | 18 Mbps |
| B. | 200 Mbps |
| C. | 50 Mbps |
| D. | 54 Mbps |
| Answer» B. 200 Mbps | |
| 490. |
When we divide band of Orthogonal Frequency Division Multiplexing (OFDM) into sub bands, it diminishes effects of __________ |
| A. | noise |
| B. | collision |
| C. | interference |
| D. | signals absence |
| Answer» D. signals absence | |
| 491. |
OFDM uses complex equalizers. |
| A. | True |
| B. | False |
| Answer» C. | |
| 492. |
OFDM is a technique for 3G mobile communication. |
| A. | True |
| B. | False |
| Answer» C. | |
| 493. |
OFDMA stands for ________ |
| A. | omnidirectional frequency division multiple access |
| B. | orthogonal frequency duplex multiple access |
| C. | orthogonal frequency divider multiple access |
| D. | orthogonal frequency division multiple access |
| Answer» E. | |
| 494. |
Activity factor is a measure of _________ |
| A. | the amount of power which is being absorbed by propeller |
| B. | power generated by propeller |
| C. | lift induced drag |
| D. | parasite drag |
| Answer» B. power generated by propeller | |
| 495. |
Inflow ratio is defined as __________ |
| A. | total inflow velocity to tip speed |
| B. | total lift by rotor to the total drag |
| C. | drag to lift ratio |
| D. | propulsive efficiency |
| Answer» B. total lift by rotor to the total drag | |
| 496. |
A propeller is rotating with 20 rps has diameter of 2.5m. Calculate thrust produced by the propeller if thrust coefficient is 0.01. |
| A. | 191.40N |
| B. | 2000kN |
| C. | 1.2MN |
| D. | 190KN |
| Answer» B. 2000kN | |
| 497. |
If slip function of propeller is 0.075 and diameter is 20 ft. then, determine the velocity of propeller. Given n = 25 rps. |
| A. | 37.5 ft/s |
| B. | 40ft/min |
| C. | 128ft |
| D. | 300ft/s2 |
| Answer» B. 40ft/min | |
| 498. |
Determine thrust of propeller if propeller efficiency is 85%. Propeller is assumed to be operated with 1200 bhp and 350ft/s of velocity. |
| A. | 1602.85 lb |
| B. | 12kN |
| C. | 16789lb |
| D. | 8902lb |
| Answer» B. 12kN | |
| 499. |
Determine the propeller efficiency if propeller velocity is 300ft/s and thrust of 1320 lb. Given bhp is 800. |
| A. | 90% |
| B. | 0.03% |
| C. | 0.895% |
| D. | 0.09% |
| Answer» B. 0.03% | |
| 500. |
What should be the value of speed power coefficient if velocity of propeller is 12 unit and power is 100 unit? Given rps is 25. |
| A. | 1.372 |
| B. | 2.35 |
| C. | 8.97 |
| D. | 9.79 |
| Answer» B. 2.35 | |