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MCQOPTIONS
This section includes 2460 Mcqs, each offering curated multiple-choice questions to sharpen your Advanced Machining knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
Which of the following methods is the correct one for using pepprament oil to detect the source of air leakage? |
| A. | Put the pepprament oil on the suspected joint and wait for the bubbles |
| B. | Put the pepprament oil on the suspected joint and wait for it to get sucked |
| C. | Put the pepprament oil on the suspected joint and check for pepprament odour at the discharge of air ejector |
| D. | Put the pepprament oil on the suspected joint, pepprament oil being coloured will change the colour of condensed water |
| Answer» D. Put the pepprament oil on the suspected joint, pepprament oil being coloured will change the colour of condensed water | |
| 252. |
Which of the following statements is FALSE regarding air leakage in condensers? |
| A. | The sources of air leakage can be found by putting soap water at infiltration prone points |
| B. | The sources of air leakage can be found out by putting pepprament oil on suspected joints |
| C. | The source of air leakage, if large, can be found out by passing candle flame over possible openings |
| D. | Thermometer and vacuum gauge readings become steady when leakage is present in a condenser |
| Answer» E. | |
| 253. |
Surface condensers require more power for water pumping than jet condensers. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 254. |
Which of the following statements is not a correct reason for inefficiency in surface condensers? |
| A. | Air leakage |
| B. | High resistance faced by the steam while entering |
| C. | Condensate undercooling |
| D. | Circulating water passing through the condenser almost smoothly |
| Answer» E. | |
| 255. |
For a speed ratio of 100, smallest gear box is obtained by using |
| A. | a pair of spur gears |
| B. | a pair of helical and a pair of spur gear compounded |
| C. | a pair of bevel and a pair of spur gear compounded |
| D. | a pair of helical and a pair of worm gear compounded |
| Answer» E. | |
| 256. |
The maximum efficiency for spiral gears is |
| A. | sin (θ + φ ) + 1/ cos (θ − φ ) + 1 |
| B. | cos (θ − φ) + 1/sin (θ + φ ) + 1 |
| C. | cos (θ + φ ) + 1/ cos (θ − φ ) + 1 |
| D. | cos (θ − φ) + 1/cos (θ + φ ) + 1 |
| Answer» D. cos (θ − φ) + 1/cos (θ + φ ) + 1 | |
| 257. |
The ratio of face width to transverse pitch of a helical gear with α as the helix angle is normally |
| A. | more than 1.15/tan α |
| B. | more than 1.05/tan α |
| C. | more than 1/tan α |
| D. | none of the mentioned |
| Answer» B. more than 1.05/tan α | |
| 258. |
Interference can be avoided in involute gears with 20° pressure angle by |
| A. | cutting involute correctly |
| B. | using as small number of teeth as possible |
| C. | using more than 20 teeth |
| D. | using more than 8 teeth |
| Answer» D. using more than 8 teeth | |
| 259. |
The condition of correct gearing is |
| A. | pitch line velocities of teeth be same |
| B. | radius of curvature of two profiles be same |
| C. | common normal to the pitch surface cuts the line of centres at a fixed point |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 260. |
Which of them is not an example of business email security tool? |
| A. | Microsoft Office Trust Center |
| B. | Sendinc |
| C. | Hushmail Business |
| D. | Cisco Jabber |
| Answer» E. | |
| 261. |
PGP is abbreviated as _______________ |
| A. | Pretty Good Privacy |
| B. | Powerful Good Privacy |
| C. | Protocol Giving Privacy |
| D. | Pretty Good Protocol |
| Answer» B. Powerful Good Privacy | |
| 262. |
_____________ is an encryption program or add-ons which provides cryptographic privacy & authentication for email communication. |
| A. | Powerful Good Privacy |
| B. | Pretty Good Privacy |
| C. | Pretty Good Encryption |
| D. | Pretty Strong Encryption |
| Answer» C. Pretty Good Encryption | |
| 263. |
Which of the following is a tool to monitor outgoing traffic of target PC’s email and intercept all the emails sent from it? |
| A. | Wireshark |
| B. | Advanced Stealth Email Redirector |
| C. | MS Outlook |
| D. | Cisco Jabber |
| Answer» C. MS Outlook | |
| 264. |
Which of the following is a micro-virus that can bring down the confidentiality of an email (specifically)? |
| A. | Zeus |
| B. | Stuxnet |
| C. | Reaper Exploit |
| D. | Friday the 13 |
| Answer» D. Friday the 13 | |
| 265. |
A screw-driven constant head velocity machine for tensile testing machine are _________ |
| A. | load controlled machine |
| B. | displacement controlled machine |
| C. | stress controlled machine |
| D. | modulus controlled machine |
| Answer» C. stress controlled machine | |
| 266. |
When the strain rate sensitivity is equal to 1. The cross-sectional area of sample will _________ on applying load. |
| A. | increase |
| B. | decrease |
| C. | remain constant |
| D. | no relationship |
| Answer» D. no relationship | |
| 267. |
The strain rate sensitivity in a Newtonian viscous solid is _______ |
| A. | 0 |
| B. | 1 |
| C. | 0.5 |
| D. | 0.1 |
| Answer» C. 0.5 | |
| 268. |
The strain rate sensitivity of metal is in the range of __________ at room temperature. |
| A. | 1-5 |
| B. | 5-10 |
| C. | <0.1 |
| D. | >0.5 |
| Answer» D. >0.5 | |
| 269. |
The relationship between the stress and strain rate is given as σ=Cϒm, where m is strain rate sensitivity. The strain rate sensitivity _____________ with increase in temperature. |
| A. | increases |
| B. | decreases |
| C. | remains constant |
| D. | no relationship |
| Answer» B. decreases | |
| 270. |
The relationship between the flow stress and the strain rate is given in empirical form ______ where strain rate=ϒ, σ = flow stress, C & m = constant. |
| A. | σ=Cϒ |
| B. | σ=Cϒm |
| C. | σ=Cmϒ |
| D. | σ=C/ϒ |
| Answer» C. σ=Cmϒ | |
| 271. |
The homologous temperature is defined as of __________ |
| A. | melting point/test temperature |
| B. | test temperature/melting point |
| C. | 0.5 * melting |
| D. | 2*test temperature |
| Answer» C. 0.5 * melting | |
| 272. |
In the case of the FCC metal, the yield strength is more temperature-dependent than the tensile strength of the given metal. |
| A. | True |
| B. | False |
| Answer» C. | |
| 273. |
The stress vs. strain relationship is given for material at temperature T1, T2, T3. The correct order of temperature will be _____ |
| A. | T1>T2>T3 |
| B. | T3>T2>T1 |
| C. | T2>T3>T1 |
| D. | T3>T1>T2 |
| Answer» C. T2>T3>T1 | |
| 274. |
What will be the output of the following PHP code? |
| A. | 24 |
| B. | 3.7 |
| C. | 3.85 |
| D. | 0View Answer |
| Answer» B. 3.7 | |
| 275. |
Inconel is softened by heating up to ___________ |
| A. | 1800°C |
| B. | 1800°F |
| C. | 180°C |
| D. | 180°F |
| Answer» C. 180°C | |
| 276. |
Heating of alloys that have high nickel content should be done in __________ atmospheres. |
| A. | sulphur free |
| B. | low temperatures |
| C. | sulphur rich |
| D. | sulphur infused |
| Answer» B. low temperatures | |
| 277. |
___________ is not a method of welding of Monel. |
| A. | Oxyacetylene |
| B. | Cold-stiffening |
| C. | Carbon-arc welding |
| D. | Metallic-arc welding |
| Answer» C. Carbon-arc welding | |
| 278. |
___________ alleviates internal stress. |
| A. | Annealing |
| B. | Conducting |
| C. | Bombarding |
| D. | Inundating |
| Answer» B. Conducting | |
| 279. |
Monel can be welded ___________ |
| A. | rarely |
| B. | easily |
| C. | with difficulty |
| D. | timelessly |
| Answer» C. with difficulty | |
| 280. |
The density of K Monel is __________ |
| A. | 90.34 grams per cubic centimetre |
| B. | 44 grams per cubic centimetre |
| C. | 18.2 grams per cubic centimetre |
| D. | 8.47 grams per cubic centimetre |
| Answer» E. | |
| 281. |
Inconel ____________ high strength and high temperatures. |
| A. | generates |
| B. | radiates |
| C. | preserves |
| D. | hooks |
| Answer» D. hooks | |
| 282. |
The approximate amount of copper present in K Monel is __________ |
| A. | 0.85% |
| B. | 0.9% |
| C. | 46% |
| D. | 29% |
| Answer» E. | |
| 283. |
It is possible to harden Inconel by heat treatment. |
| A. | True |
| B. | False |
| Answer» C. | |
| 284. |
The approximate amount of nickel present in Monel is __________ |
| A. | 1% |
| B. | 0.15% |
| C. | 67% |
| D. | 33% |
| Answer» D. 33% | |
| 285. |
The melting point of Inconel is ___________ |
| A. | 1090°F |
| B. | 2540°F |
| C. | 2900°F |
| D. | 2540°C |
| Answer» C. 2900°F | |
| 286. |
Monel resembles mild steel in a few working properties. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 287. |
The melting point of Monel is around __________ |
| A. | 1220°F |
| B. | 2355-2566°C |
| C. | 2370-2460°F |
| D. | 4500°F |
| Answer» D. 4500°F | |
| 288. |
At normal temperatures, the material K Monel is __________ |
| A. | magnetic |
| B. | active |
| C. | non-magnetic |
| D. | corrosion prone |
| Answer» D. corrosion prone | |
| 289. |
The amount of nickel present in Inconel is __________ |
| A. | 0.2% |
| B. | 0.25% |
| C. | 46% |
| D. | 79.5% |
| Answer» E. | |
| 290. |
During USM __________ is converted into mechanical vibrations. |
| A. | pressure energy of the slurry |
| B. | electrical energy |
| C. | chemical energy of the chemical used for the slurry |
| D. | mechanical energy of the tool |
| Answer» C. chemical energy of the chemical used for the slurry | |
| 291. |
Which of the following materials is not suitable for USM? |
| A. | Lead |
| B. | Glass |
| C. | Ceramic |
| D. | Carbides |
| Answer» B. Glass | |
| 292. |
USM is a material removal process used to _____ material. |
| A. | corrode |
| B. | erode |
| C. | melt |
| D. | form |
| Answer» C. melt | |
| 293. |
What is workability? |
| A. | When it is easily placed and compacted heterogeneous |
| B. | When it is easily placed and compacted homogenous |
| C. | When it is not easily placed |
| D. | When it is easily placed but not compacted homogenous |
| Answer» C. When it is not easily placed | |
| 294. |
Which has Low porosity? A B |
| A. | A |
| B. | B |
| C. | Both are same |
| D. | Can’t predict |
| Answer» B. B | |
| 295. |
This image has _________ |
| A. | High w/c ratio |
| B. | Low w/c ratio |
| C. | High Strength |
| D. | Low porosity |
| Answer» B. Low w/c ratio | |
| 296. |
A lower ratio leads to ____________ |
| A. | Higher strength and durability |
| B. | Higher strength but low durability |
| C. | Lower strength but high durability |
| D. | Lower strength and durability |
| Answer» B. Higher strength but low durability | |
| 297. |
The water–cement ratio is the ratio of _______________ |
| A. | Weight of water to the weight of cement |
| B. | Volume of water to the volume of cement |
| C. | Density of water to the Density of cement |
| D. | Weight of water to the weight of aggregates |
| Answer» B. Volume of water to the volume of cement | |
| 298. |
The relation between Zoπ, Z1, Z2, ZoT is? |
| A. | ZoT = Z1Z2/Zoπ |
| B. | Zoπ = Z1Z2/ZoT |
| C. | ZoT = Z1Z1/Zoπ |
| D. | ZoT = Z2Z2/Zoπ |
| Answer» C. ZoT = Z1Z1/Zoπ | |
| 299. |
If the value of β is π, and Z1, Z2 are same type of reactance, then the value of β is? |
| A. | α=2 cosh-1√(Z1/2 Z2) |
| B. | α=2 cosh-1√(Z1/Z2) |
| C. | α=2 cosh-1√(4 Z1/Z2) |
| D. | α=2 cosh-1√(Z1/4 Z2) |
| Answer» E. | |
| 300. |
If Z1, Z2 are same type of reactance, and if α = 0, then the value of β is? |
| A. | β=2 sin-1(√(Z1/4 Z2)) |
| B. | β=2 sin-1(√(4 Z1/Z2)) |
| C. | β=2 sin-1(√(4 Z1/Z2)) |
| D. | β=2 sin-1(√(Z1/Z2)) |
| Answer» B. β=2 sin-1(√(4 Z1/Z2)) | |