MCQOPTIONS
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MCQOPTIONS
This section includes 2242 Mcqs, each offering curated multiple-choice questions to sharpen your Php knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
Which of the following is correct?Statement 1: ε represents a single string in the set.Statement 2: Ф represents the language that consist of no string. |
| A. | Statement 1 and 2 both are correct |
| B. | Statement 1 is false but 2 is correct |
| C. | Statement 1 and 2 both are false |
| D. | There is no difference between both the statements, ε and Ф are different notation for same reason |
| Answer» B. Statement 1 is false but 2 is correct | |
| 252. |
Steel plates are rarely used for: |
| A. | Connecting steel beams for extension |
| B. | Serving as tension members in the truss |
| C. | Forming built up sections of steel |
| D. | Providing support in R.C.C structures |
| Answer» E. | |
| 253. |
Which of the below is not a disadvantage of using ribbed-torsteel bars? |
| A. | High labour charge |
| B. | Not easily identifiable |
| C. | Weaker than plain round steel |
| D. | Arc welding is not possible |
| Answer» B. Not easily identifiable | |
| 254. |
Flat iron bars are used generally for: |
| A. | R.C.C |
| B. | Grill work |
| C. | Roofing |
| D. | Truss |
| Answer» C. Roofing | |
| 255. |
The carbon content of steel is: |
| A. | Less than 0.15% |
| B. | 2% – 4% |
| C. | 0.08% |
| D. | 0.002% – 2.1% |
| Answer» E. | |
| 256. |
What is the unit of specific speed in metric system? |
| A. | m.s |
| B. | m/s |
| C. | m3/s |
| D. | m |
| Answer» D. m | |
| 257. |
Centrifugal pump impellers have speed ranging from ________ |
| A. | 500- 10000 |
| B. | 50- 100 |
| C. | 200-300 |
| D. | 0-50 |
| Answer» B. 50- 100 | |
| 258. |
Ratio of pump or turbine with reference pump or turbine is called as _________ |
| A. | Efficiency |
| B. | Performance |
| C. | Heat generated |
| D. | Relative velocity |
| Answer» C. Heat generated | |
| 259. |
Specific speeds are used in pumps to determine ________ |
| A. | Temperature |
| B. | Reaction speed |
| C. | Suction specific speed |
| D. | Wheel speed |
| Answer» D. Wheel speed | |
| 260. |
Specific speed is denoted by ________ |
| A. | N |
| B. | n |
| C. | Ns |
| D. | S |
| Answer» D. S | |
| 261. |
_________ tests whether a given Map has a given entry. |
| A. | hasItem |
| B. | hasItems |
| C. | hasValue |
| D. | hasEntry |
| Answer» E. | |
| 262. |
__________________ tests whether a given string equals another one, ignoring the case. |
| A. | stringEqual |
| B. | equalToIgnoringCase |
| C. | ignoringCaseEqual |
| D. | equalToCase |
| Answer» C. ignoringCaseEqual | |
| 263. |
A/An __________ property is an array instead of a single value. |
| A. | Indexed |
| B. | valued |
| C. | null |
| D. | variable |
| Answer» B. valued | |
| 264. |
The JUnit hasItem() function is a _____________ |
| A. | Hamcrest Matcher |
| B. | Instance Function |
| C. | JUnitMatcher |
| D. | Matcher |
| Answer» D. Matcher | |
| 265. |
Which among the following provide solutions as a string of numbers? |
| A. | Genetic algorithm |
| B. | Genetic programming |
| C. | Evolutionary programming |
| D. | Gene expression programming |
| Answer» B. Genetic programming | |
| 266. |
Which among the following is used for quality determination in evolutionary algorithm? |
| A. | Subjective function |
| B. | Fitness function |
| C. | Loss function |
| D. | Utility function |
| Answer» C. Loss function | |
| 267. |
Case based reasoning is a cyclic process. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 268. |
What is the process of identifying a parameter value from a training set that could result in the minimisation of error called? |
| A. | K-nearest neighbours algorithm |
| B. | Leave one out cross validation algorithm |
| C. | Bayesian algorithm |
| D. | Markov theorem |
| Answer» C. Bayesian algorithm | |
| 269. |
Which among the following is an algorithm useful for case based reasoning? |
| A. | Viterbi algorithm |
| B. | K- nearest neighbours algorithm |
| C. | Forward algorithm |
| D. | Backward algorithm |
| Answer» C. Forward algorithm | |
| 270. |
Which among the following uses past solutions to solve current problems? |
| A. | Artificial neural networks |
| B. | Fuzzy logic |
| C. | Knowledge based systems |
| D. | Case based reasoning |
| Answer» E. | |
| 271. |
What is the term used to refer to variables that take non-numerical as input? |
| A. | String variables |
| B. | Character variables |
| C. | Linguistic variables |
| D. | Morphological variables |
| Answer» D. Morphological variables | |
| 272. |
Which among the following is the correct sequence of events that occur in application of fuzzy logic? |
| A. | Fuzzify the input, execute the applicable rules, and de-fuzzify the output |
| B. | Execute the applicable rules, fuzzify the input, and de-fuzzify the output |
| C. | Fuzzify the input, de-fuzzify the output, and execute the applicable rules |
| D. | Execute the applicable rules, fuzzify the input, and fuzzify the output |
| Answer» B. Execute the applicable rules, fuzzify the input, and de-fuzzify the output | |
| 273. |
Which among the following is a false statement about Fuzzy logic? |
| A. | Fuzzy logic may use imprecise information |
| B. | Fuzzy logic uses only accurate information |
| C. | Fuzzy logic may represent vague information |
| D. | Fuzzy logic may use non-numerical information |
| Answer» C. Fuzzy logic may represent vague information | |
| 274. |
Which among the following gives the definition of fuzzy logic? |
| A. | Fuzzy logic follows Boolean logic where zero stands for true and one stands for false |
| B. | Fuzzy logic follows Boolean logic where zero stands for false and one stands for true |
| C. | Fuzzy logic allows the assignment of any real number from zero to one to variables |
| D. | Fuzzy logic allows the assignment of any whole number from zero to one to variables |
| Answer» D. Fuzzy logic allows the assignment of any whole number from zero to one to variables | |
| 275. |
Where is the copolymer equation of binary copolymerization not applicable? |
| A. | free radical systems |
| B. | cationic systems |
| C. | anionic systems |
| D. | none of the mentioned |
| Answer» E. | |
| 276. |
How is the monomer units arranged generally, in the copolymer structure of any vinyl copolymer? |
| A. | sequentially |
| B. | alternatively |
| C. | randomly |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 277. |
The values of reactivity ratios, r1 and r2 are independent of the change in the mechanism of chain propagation, form radical to ionic mechanism. State true or false. |
| A. | True |
| B. | False |
| Answer» C. | |
| 278. |
Which of the following has more priority, in binary copolymerization involving monomers M1 and M2, if the reactivity ratio r1 is greater than 1? |
| A. | chain radical ∙M1 to add monomer M1 |
| B. | chain radical ∙M1 to add monomer M2 |
| C. | chain radical ∙M2 to add monomer M1 |
| D. | chain radical ∙M2 to add monomer M2 |
| Answer» B. chain radical ∙M1 to add monomer M2 | |
| 279. |
Consider the copolymer equation of binary copolymerization between monomers M1 and M2 {[M1]/[M2]}copolymer = {[M1/[M2]}(r1[M1]+[M2])/(r2[M2]+[M1])What does the term [M1] on the right hand signify here? |
| A. | absolute molar concentration of monomer M1 |
| B. | molar concentration of monomer M1 in feed |
| C. | molar concentration of monomer M1 in copolymer |
| D. | none of the mentioned |
| Answer» C. molar concentration of monomer M1 in copolymer | |
| 280. |
Which of the following mechanism can produce a copolymer? |
| A. | step-growth mechanism |
| B. | free radical mechanism |
| C. | cationic mechanism |
| D. | all of the mentioned |
| Answer» E. | |
| 281. |
The sensitivity of the fracture of the brittle solid to surface condition has been termed as the ____________ |
| A. | Bauschinger effect |
| B. | Doppler effect |
| C. | Joffe effect |
| D. | Polarity effect |
| Answer» D. Polarity effect | |
| 282. |
Griffith’s theory for a thick plate predicts the fracture as_________ |
| A. | \(σ=(\frac{2Eϒ}{(1-v)πc)})^{1/2}\) |
| B. | \(σ=(\frac{2Eϒ}{πc})^{1/2}\) |
| C. | })^{1/2}\) b) \(σ=(\frac{2Eϒ}{πc})^{1/2}\) c) \(σ=(\frac{2Eϒ}{πc})^{1/2}\) |
| D. | \(σ=(\frac{2Eϒ(1-v)}{πc})^{1/2}\) |
| Answer» B. \(σ=(\frac{2Eϒ}{πc})^{1/2}\) | |
| 283. |
If the crack length inside the material is increased by 4 times. The fracture strength will ___________ |
| A. | decrease by 4 times |
| B. | decrease by 2 times |
| C. | increase by 4 times |
| D. | increase by 2 times |
| Answer» C. increase by 4 times | |
| 284. |
The statement of Griffith theory of brittle fracture says that “A crack will propagate when the decrease in elastic strain energy is at least equal to the energy required to create the new surface”. |
| A. | True |
| B. | false |
| Answer» B. false | |
| 285. |
The fracture on the sharpest crack tip will be equal to \((\frac{Eϒ_s}{4c})^{1/2}\) . |
| A. | True |
| B. | False |
| Answer» B. False | |
| 286. |
The maximum stress on the tip of the crack of length 2c and radius of curvature of the tip ρt is given as ____ |
| A. | σmax=\(σ[1+2(\frac{c}{ρt})^{1/2}]\) |
| B. | σmax=\(σ[1+(\frac{c}{ρt})^{1/2}]\) |
| C. | σmax=\(σ[2(\frac{c}{ρt})^{1/2}]\) |
| D. | σmax=\(σ[(\frac{c}{ρt})^{1/2}]\) |
| Answer» B. σmax=\(σ[1+(\frac{c}{ρt})^{1/2}]\) | |
| 287. |
Determine the cohesive strength of glass fibre, if E = 90 GPa, Surface energy = 1.2 Jm-1/2 and a0=0.18 nm? |
| A. | 29.5 GPa |
| B. | 10 GPa |
| C. | 24.5 GPa |
| D. | 150 MPa |
| Answer» D. 150 MPa | |
| 288. |
The theoretical cohesive strength of brittle material is approximately equal to ________ |
| A. | E |
| B. | E/2 |
| C. | E/π |
| D. | E/2π |
| Answer» D. E/2π | |
| 289. |
In a steam engine, one method of obtaining the earlier cut-off with a simple slide valve is by increasing the angle of advance of the eccentric while the throw of the eccentric, steam lap and exhaust lap are kept constant. The method will |
| A. | cause withdrawing or throttling of steam |
| B. | reduce length of effective stroke of piston |
| C. | reduce maximum opening opening of port to steam |
| D. | all of the mentioned |
| Answer» C. reduce maximum opening opening of port to steam | |
| 290. |
The throw of the eccentric is equal of the valve travel. |
| A. | True |
| B. | False |
| Answer» C. | |
| 291. |
The distance moved by the valve from one end to the other end is called valve travel. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 292. |
In a steam engine, the distance by which the outer edge of the D-slide valve overlaps the steam port is called |
| A. | lead |
| B. | steam lap |
| C. | exhaust lap |
| D. | none of the mentioned |
| Answer» C. exhaust lap | |
| 293. |
Calculate the magnetic flux density if the magnetic field strength is 3A/m. |
| A. | 4*pi*10-7T |
| B. | 8*pi*10-7T |
| C. | 10*pi*10-7T |
| D. | 12*pi*10-7T |
| Answer» E. | |
| 294. |
Calculate the magnetic field strength if the magnetic flux density is 4*piT. |
| A. | 10-7/16*pi2A/m |
| B. | 10-7A/m |
| C. | 107A/m |
| D. | 10-7A |
| Answer» D. 10-7A | |
| 295. |
Calculate the magnetic flux density if the magnetic field strength is 2A/m. |
| A. | 4*pi*10-7T |
| B. | 8*pi*10-7T |
| C. | 10*pi*10-7T |
| D. | 12*pi*10-7T |
| Answer» C. 10*pi*10-7T | |
| 296. |
Which among the following, is a correct expression for µ0. |
| A. | µ0=BH |
| B. | µ0=B/H |
| C. | µ0=H/B |
| D. | µ0=BH2 |
| Answer» C. µ0=H/B | |
| 297. |
A substance whose permeability is more than the permeability of free space is? |
| A. | Diamagnetic |
| B. | Paramagnetic |
| C. | Ferromagnetic |
| D. | Both paramagnetic and ferromagnetic |
| Answer» E. | |
| 298. |
Which, among the following, have positive susceptibility? |
| A. | Diamagnetic |
| B. | Paramagnetic |
| C. | Ferromagnetic |
| D. | Both paramagnetic and ferromagnetic |
| Answer» E. | |
| 299. |
Permeability of free space is also known as _________ |
| A. | Magnetic constant |
| B. | Electric constant |
| C. | Electrostatic constant |
| D. | Magnetostatic constant |
| Answer» B. Electric constant | |
| 300. |
What kind of images can the Nokia 5110 GDM display? |
| A. | Colored Image |
| B. | Grayscale Image |
| C. | Binary Image |
| D. | Inverted Image |
| Answer» D. Inverted Image | |