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MCQOPTIONS
This section includes 5314 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 4351. |
A 230 V, 50 Hz, one-pulse SCR controlled converter has extinction angle β = 210°. Find the circuit turn-off time$ |
| A. | 10 m-sec |
| B. | 0 |
| C. | 8.3 m-sec |
| D. | 5.4 m-sec |
| Answer» D. 5.4 m-sec | |
| 4352. |
According to the method of using the tool, lathe cutting tool can be classified as_______ |
| A. | turning |
| B. | grooving |
| C. | forming |
| D. | all of the mentioned |
| Answer» E. | |
| 4353. |
The consortium’s operating principles assured that open source community would control ________$ |
| A. | Code |
| B. | Consortium |
| C. | Both code, consortium |
| D. | Neither code nor consortium |
| Answer» D. Neither code nor consortium | |
| 4354. |
Which of the following is defines the theoretical capacity? |
| A. | C = 50 uwd |
| B. | C = 10 uwd |
| C. | C = 5 uwd |
| D. | C = 4.5 uwd |
| Answer» B. C = 10 uwd | |
| 4355. |
From the choices given below, identify the activation energy of a reaction whose rate constant increases by 100 when the temperature changes from 300K to 360K |
| A. | 53 |
| B. | 69 |
| C. | 35 |
| D. | 42 |
| Answer» C. 35 | |
| 4356. |
The probability density function p_s (s) of the transformed variable s can be obtained by using which of the following formula? |
| A. | p_<sub>s</sub> (s)=p_<sub>r</sub> (r)|dr/ds| |
| B. | p_<sub>s</sub> (s)=p_<sub>r</sub> (r)|ds/dr| |
| C. | p_<sub>r</sub> (r)=p_<sub>s</sub> (s)|dr/ds| |
| D. | p_<sub>s</sub> (s)=p_<sub>r</sub> (r)|dr/dr| |
| Answer» B. p_<sub>s</sub> (s)=p_<sub>r</sub> (r)|ds/dr| | |
| 4357. |
Procedures, for their execution, require |
| A. | input data |
| B. | output data |
| C. | constants |
| D. | input data or constants |
| Answer» E. | |
| 4358. |
Which waveform has the feature of error detection? |
| A. | NRZ-L |
| B. | RZ-AMI |
| C. | Manchester coding |
| D. | Duobinary |
| Answer» E. | |
| 4359. |
If P/Q=1, unknown resistance S=1000Ω and R could be varied from 0 to 100Ω then the bridge could be ___________$ |
| A. | A balanced circuit |
| B. | A rectified circuit |
| C. | An unbalanced circuit |
| D. | An identical circuit |
| Answer» D. An identical circuit | |
| 4360. |
PMDC when coupled to a rotating shaft would generate a voltage proportional to speed and thus would serve as____________ |
| A. | Tachometer |
| B. | Servomotor |
| C. | D.C. motor |
| D. | A.C. motor |
| Answer» B. Servomotor | |
| 4361. |
Why the shake flask is not continuously preferred? |
| A. | Because of resistant to growth |
| B. | Because of increase rate of contamination |
| C. | Because of imprecise control of temperature |
| D. | Because of unlimited stirring |
| Answer» D. Because of unlimited stirring | |
| 4362. |
What does the ALTER TABLE clause do ? |
| A. | The SQL ALTER TABLE clause modifies a table definition by altering, adding, or deleting table columns and/or constraints |
| B. | The SQL ALTER TABLE clause is used to insert data into database table |
| C. | THE SQL ALTER TABLE deletes data from database table |
| D. | The SQL ALTER TABLE clause is used to delete a database table |
| Answer» B. The SQL ALTER TABLE clause is used to insert data into database table | |
| 4363. |
Which of the following results when the equilibrium established in a semiconductor? |
| A. | Restrain the process of diffusion |
| B. | Electric field becomes very high |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 4364. |
The decimal equivalent of (0.101)2 will be ____________ |
| A. | 0.5 |
| B. | 0.625 |
| C. | 0.25 |
| D. | 0.875 |
| Answer» C. 0.25 | |
| 4365. |
Which one of the following factor does not affect soil suction? |
| A. | Water content |
| B. | Temperature |
| C. | Plasticity index of a soil |
| D. | Atmospheric pressure |
| Answer» E. | |
| 4366. |
When parts with existing openings in them must be cut, conventional flushing produces _____ |
| A. | air pockets |
| B. | unnecessary tapers |
| C. | undercuts |
| D. | poor flushing |
| Answer» B. unnecessary tapers | |
| 4367. |
SRTP is abbreviated as ________ |
| A. | Secure Relay Transport Protocol |
| B. | Secure Real-time Transferring Protocol |
| C. | Secure Real-time Transport Protocol |
| D. | Secure Real-time Transportation Protocol |
| Answer» D. Secure Real-time Transportation Protocol | |
| 4368. |
In FM both the frequency and amplitude of carrier signal is varied in accordance with the instantaneous value of modulating signal. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4369. |
The horizontal platform between two flights of a Stair is known as the _______ |
| A. | Landing |
| B. | Pitch |
| C. | Nosing |
| D. | Rise |
| Answer» B. Pitch | |
| 4370. |
What is the maximum of energy converted to shaft work if stream is taken to reference state? |
| A. | Gibbs energy |
| B. | Availability function |
| C. | Entropy |
| D. | Change in entropy |
| Answer» C. Entropy | |
| 4371. |
Terephthalic acid is converted into its dimethyl ester by treating it with |
| A. | Methyl chloride |
| B. | Hydroxylamine |
| C. | Methyl alcohol |
| D. | Ethylene glycol |
| Answer» D. Ethylene glycol | |
| 4372. |
Soft solder is a _______ tin alloy. |
| A. | Eutectic |
| B. | Eutectoid |
| C. | Peritectic |
| D. | Peritectoid |
| Answer» B. Eutectoid | |
| 4373. |
Five channels, each with a 100-kHz bandwidth, are to be multiplexed together. What is the minimum bandwidth of the link if there is a need for a guard band of 10 kHz between the channels to prevent interference? |
| A. | 4600 kHz |
| B. | 500 kHz |
| C. | 540 kHz |
| D. | 580 kHz |
| Answer» D. 580 kHz | |
| 4374. |
Spacing of tacking fasteners when exposed to weather should not exceed ______ |
| A. | 32t, where t= thickness of outside plate |
| B. | 25t, where t= thickness of outside plate |
| C. | 20t, where t= thickness of outside plate |
| D. | 16t, where t= thickness of outside plate |
| Answer» E. | |
| 4375. |
Which of the following is true case when the stress cracking problem in polyethylene is less critical? |
| A. | high molecular weight and high density |
| B. | low molecular weight and high density |
| C. | high MFI and high density |
| D. | low molecular weight and low density |
| Answer» B. low molecular weight and high density | |
| 4376. |
If friction angle is 30’ then the maximum efficiency of the screw is$ |
| A. | 33% |
| B. | 66% |
| C. | 50% |
| D. | Noe of the mentioned |
| Answer» B. 66% | |
| 4377. |
Backward extrusion is another name for which of the following? |
| A. | Direct extrusion |
| B. | Indirect extrusion |
| C. | Impact extrusion |
| D. | Hydrostatic extrusion |
| Answer» C. Impact extrusion | |
| 4378. |
Which of the following is correct for the marketplace? |
| A. | When designing a system,wanting to conform to a standard will guarantee interoperability |
| B. | Waiting for standards to be produced will certainly not increase time to market |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» E. | |
| 4379. |
The only deliverable work product for a successful project is the working program. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4380. |
For maximum power and economy a slow burning fuel needs a higher spark advance than a fast burning fuel. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4381. |
Find the Gauss value for a position vector in Cartesian system from the origin to one unit in three dimensions. |
| A. | 0 |
| B. | 3 |
| C. | -3 |
| D. | 1 |
| Answer» C. -3 | |
| 4382. |
Why energy flow is linear in an ecosystem? |
| A. | Because it flows in air medium |
| B. | Because it is very particular |
| C. | Because ecosystem is linear |
| D. | Because energy flows from one trophic level to the next higher one |
| Answer» E. | |
| 4383. |
Incomplete welding may cause which of the following defect? |
| A. | Folds |
| B. | Laminations |
| C. | Wavy edges |
| D. | Zipper cracks |
| Answer» C. Wavy edges | |
| 4384. |
Why active load is used in amplifier to obtain large gain in intermediate stage of amplifier? |
| A. | To obtain a very large voltage gain |
| B. | To get High input resistance |
| C. | To reduce the noises |
| D. | To increase current gain |
| Answer» B. To get High input resistance | |
| 4385. |
How is persistent current produced in supermagnets? |
| A. | By passing ac current |
| B. | By magnetising it |
| C. | By passing dc current |
| D. | By increasing the resistance |
| Answer» D. By increasing the resistance | |
| 4386. |
What does an E.Coli genomic library contain? |
| A. | Recombinant clones of genes |
| B. | Genes in E.coli genome |
| C. | Expressed genes |
| D. | Protein products |
| Answer» B. Genes in E.coli genome | |
| 4387. |
The process of mapping a world window in World Coordinates to the Viewport is called Viewing transformation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4388. |
MESH equations are written in terms of? |
| A. | Mass rates |
| B. | Flow rates |
| C. | Vapor rates |
| D. | Liquid rate |
| Answer» D. Liquid rate | |
| 4389. |
Sum of two periodic signals is a periodic signal when the ratio of their time periods is ____________ |
| A. | A rational number |
| B. | An irrational number |
| C. | A complex number |
| D. | An integer |
| Answer» B. An irrational number | |
| 4390. |
Which of the following is not a desirable electrolyte property? |
| A. | Low viscosity |
| B. | High specific heat |
| C. | Lower resistance to film formation on the workpiece |
| D. | Non-corrosiveness |
| Answer» D. Non-corrosiveness | |
| 4391. |
The value of gas constant is same for all the gases |
| A. | True |
| B. | False |
| Answer» C. | |
| 4392. |
Which of these states about Object Adapter pattern? |
| A. | The adapter can inherit adapter operations with appropriate semantics and pragmatics, override those with inappropriate semantics or pragmatics, and add operations needed for the new interface |
| B. | The adapter may hold a reference to the adapter and delegate must work to the adapter object |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» C. All of the mentioned | |
| 4393. |
_______ communication is a dictator type communication. |
| A. | Two-way |
| B. | Three- way |
| C. | Four- way |
| D. | One- way |
| Answer» E. | |
| 4394. |
Which grades are available in shaft ’j’ assembly?$ |
| A. | 1 to 5 |
| B. | 2 to 6 |
| C. | 3 to 7 |
| D. | 5 to 11 |
| Answer» E. | |
| 4395. |
If the mean stress value for a sinusoidal stress function is zero, then this type of stress falls in which category? |
| A. | Fluctuating Stresses |
| B. | Alternating Stresses |
| C. | Repeated Stresses |
| D. | Reversed Stresses |
| Answer» E. | |
| 4396. |
UV shadowing is used at times for visualising the DNA. Which of the statements is correct for it? |
| A. | In this method, the DNA bands are visualized because they fluoresce under UV |
| B. | The DNA bands won’t fluoresce but will absorb the UV light |
| C. | It is not suitable for visualizing single stranded molecules |
| D. | It is less preferred over use of ethidium bromide |
| Answer» C. It is not suitable for visualizing single stranded molecules | |
| 4397. |
Which option is used by tar to append files to the end of an archive? |
| A. | -t |
| B. | -c |
| C. | -x |
| D. | -r |
| Answer» E. | |
| 4398. |
Assume an ideal solution with pure component A, has a vapour pressure of 300 mmHg and the total pressure of 1atm. The concentration in terms of mole ratio is |
| A. | 0.65 |
| B. | 0.28 |
| C. | 0.39 |
| D. | None of the mentioned |
| Answer» B. 0.28 | |
| 4399. |
Which of the following scheme is used by Bluetooth? |
| A. | Frequency hopping TDD scheme |
| B. | Frequency hopping FDD scheme |
| C. | DSSS TDD scheme |
| D. | DSSS FDD scheme |
| Answer» B. Frequency hopping FDD scheme | |
| 4400. |
The pulp has tensile strength and burst strengths and brightness equal to ___________ pulp. |
| A. | Kraft |
| B. | Biological |
| C. | Organosolv |
| D. | Klason |
| Answer» B. Biological | |