Dislocation cross-slip is difficult in those materials, which have (A) Large number of slip systems
(B) High work hardening rate
(C) Coarse grain size
(D) Low stacking fault energy

1 Answer

Answer :

(D) Low stacking fault energy

Related questions

Description : Strain hardening effect in metals subjected to cold working is due to the __________ mechanism. (A) Slip (B) Fracture (C) Winning (D) Dislocation

Last Answer : (D) Dislocation

Description : Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism. (A) Fracture (B) Dislocation (C) Slip (D) Twinning

Last Answer : (C) Slip

Description : Which of the following phenomenon/ phenomena is/are diffusion controlled? (A) Dislocation climb (B) Cross-slip (C) Twinning (D) Recrystallisation

Last Answer : (D) Recrystallisation

Description : The hardenability of steel decreases with (A) Decrease in dislocation density (B) Increase in solutionising temperature (C) Increase in strength (D) Decrease in grain size

Last Answer : D) Decrease in grain size

Description : __________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working. (A) Solid solution hardening (B) Screw dislocation (C) Strain ageing (D) Twinning

Last Answer : (C) Strain ageing

Description : Between 230 and 370°C, blue brittleness is caused in mild steel because of the (A) Immobility of dislocation (B) Strain-ageing (C) Increase in Young's modulus (D) Strain hardening

Last Answer : Option B

Description : Secondary hardening in steels arises out of the (A) Precipitation of fine alloy carbides at high temperatures (B) Refinement of ferrite grain size by working (C) Decomposition of retained austenite upon heat treatment (D) Precipitation of complex inter-metallic upon heat treatment

Last Answer : Option C

Description : With increase in annealing temperature, the following defect density decreases. (A) Vacancy (B) Dislocation (C) Grain boundary (D) All of these

Last Answer : Option D

Description : Wet sieving is employed, when the product contains __________ materials. (A) Abrasive (B) Large quantity of very fine (C) Coarse (D) Non-sticky

Last Answer : (B) Large quantity of very fine

Description : ________ cannot increase the fatigue strength of a material. (A) Grain refining (B) Grain coarsening (C) Surface hardening (D) Shot peening

Last Answer : (B) Grain coarsening

Description : Normalising of an object does not (A) Refine coarse grain structure obtained during hot working (B) Improve ductility (C) Improve yield strength (D) Improve mechanical properties

Last Answer : (B) Improve ductility

Description : Pick out the wrong statement. (A) Recycled coarse material to the grinder by a classifier is termed as circulating load (B) Wear and tear in wet crushing is more than that in dry crushing of ... a pipeline which permits the solids to settle down due to reduction in velocity of the dust laden gas

Last Answer : (C) Size enlargement (opposite of size reduction) is not a mechanical operation

Description : In order to avoid hip dislocation after replacement surgery, the nurse teaches the patient which of the following guidelines? a) Never cross the affected leg when seated. Crossing the affected leg may result ... a chair. The patient should be taught to avoid bending forward when seated in a chair.

Last Answer : a) Never cross the affected leg when seated. Crossing the affected leg may result in dislocation of the hip joint after total hip replacement.

Description : The soil which contains finest grain particles, is (A) Coarse sand (B) Fine sand (C) Silt (D) Clay

Last Answer : (D) Clay

Description : What do mean by coarse grain soil and fine grained soil.

Last Answer : Coarse Grain Soil:- 1. If more than 50% of soil is retained on sieve 0.075mm it is called as coarse grain soil. 2. A coarse grain soil is called as gravel if 50% or more of the ... liquid limit is less than 50% or more than 50% respectively. Organic soil are also included in fine grain soil.

Description : Powdery materials can be guarded against caking tendency on storage by (A) Providing irregular grain size (B) Providing minimum percentage of voids (C) Having maximum possible points of contact (D) None of these

Last Answer : (D) None of these

Description : For grinding of softer materials, the grinding wheel should have __________ grain size. (A) Finer (B) Coarser (C) Medium (D) Any type of

Last Answer : (B) Coarser

Description : Stacking elements in a transmitting antenna system A. increases the field strength at the receiving antenna B. increases the directivity of the transmitter antenna C. decrease the size of the lobe in the radiation pattern D. both A and B

Last Answer : D. both A and B

Description : 9. The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation is (A) More (B) Equal (C) Less (D) Double

Last Answer : Option A

Description : Presence of SO2 in furnace gases attacks the ferrous metal by way of (A) Accelerating the rate of scaling (B) Causing metal embrittlement (C) Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Description : Film boiling is usually not desired in commercial equipments, because (A) The heat transfer rate is low in view of the large temperature drop (B) It is difficult to maintain (C) It is not economic (D) None of these

Last Answer : (A) The heat transfer rate is low in view of the large temperature drop

Description : Taksal fault is an example of: (A) Normal fault (B) Reverse fault (C) Strike slip fault (D) None of these

Last Answer : (C) Strike slip fault 

Description : Which type of movement has been seen in right lateral strike-slip fault? (A) Sinistral movement (B) Dextral movement (C) Upward movement (D) None of these

Last Answer : (B) Dextral movement  

Description : Sag pond is an example of : (A) Normal fault (B) Reverse fault (C) Strike slip fault (D) None of these

Last Answer : (C) Strike slip fault 

Description : Point on fault plane where slip initiated is termed as: (A) Epicenter (B) Hypocenter (C) Fault scarp (D) Hanging wall

Last Answer : (B) Hypocenter 

Description : The San Andreas Fault is an example of: (A) Normal fault (B) Reverse fault (C) Right lateral strike slip (D) Left lateral strike slip

Last Answer : (C) Right lateral strike slip  

Description : Surface along which the block of rock slip is called _____? (A) Fault zone (B) Fault Plane (C) Fault scarp (D) None of these

Last Answer : (B) Fault Plane 

Description : In which type of the fault the hanging wall is moving up with respect to foot wall? (A) Normal fault (B) Strike slip fault (C) Reverse fault (D) None of these

Last Answer : (C) Reverse fault  

Description : The San Andreas fault in California is a classic example of which of the following types of faults? w) tear fault x) upthrust fault y) dip-slip fault z) strike-slip fault

Last Answer : ANSWER: Z -- STRIKE-SLIP FAULT

Description : In geological studies, a reverse fault having a di less than 10 degrees is known as which of the following types of faults. w) normal x) overthrust y) strike-slip z) none of the above.

Last Answer : ANSWER: X -- OVERTHRUST

Description : In studies of the surface of the earth, a reverse fault having a dip between 10 and 45 degrees is known as a: w) thrust fault x) normal fault y) strike-slip fault z) neither of these

Last Answer : ANSWER: W -- THRUST FAULT 

Description : Gyratory crushers compared to the reciprocating jaw crushers (A) Have greater capacity per unit of discharge area (B) Crush intermittently (C) Are less suitable for coarse materials (D) Have less steady power consumption

Last Answer : (A) Have greater capacity per unit of discharge area

Description : Pick out the wrong statement. (A) For the compressible cake, voidage & the specific resistance of the cake can be assumed to be constant (B) Cake resistance is independent of the pressure ... Crushing of explosive materials are done by employing dry-grinding (D) Gyratory crusher is a coarse crusher

Last Answer : (B) Cake resistance is independent of the pressure drop

Description : Which of the following cements is suitable for use in massive concrete structures such as large dams? (A) Ordinary Portland cement (B) Low heat cement (C) Rapid hardening cement (D) Sulphate resisting cement

Last Answer : Answer: Option B

Description : How high can stacking office chairs be stacked safely?

Last Answer : You should not stack anything higher than approximately ten feet high. There will be a risk of it falling over and injuring yourself and customers if higher.

Description : Why does stacking the Whisper style command work in the preview, but not in the post?

Last Answer : Yes. Anything smaller than the first level whisper becomes hard to read. The reason for the difference is that we do the processing on our end of things to make it look as it does in ... eventually we'll get to it. For instance making the site faster and preventing downtime kinda takes precedence.

Description : Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when (A) Strain rate is increased (B) Grain size is increased (C) Prior cold deformation is increased (D) Not affected by any of the above parameters

Last Answer : (A) Strain rate is increased

Description : Occurrence of 'case hardening' during drying of a high moisture solid cake __________ the drying rate. (A) Increases (B) Decreases (C) Does not affect

Last Answer : (B) Decreases

Description : Which type of following cement is used for mass concrete work a) High Alumina cement b) Quick setting cement c) Rapid hardening cement d) Low heat cement*

Last Answer : d) Low heat cement*

Description : Coarse grained steels have (A) Low toughness (B) No tendency to distort (C) High density (D) Very high toughness

Last Answer : (B) No tendency to distort

Description : Pick up the correct statement from the following: (A) Catalysts are added to assist and accelerate the hardening of resin (B) The fillers are inert materials and they impart strength and hardness (C) Fibrous fillers increase thermal resistance (D) All the above

Last Answer : Answer: Option D

Description : __________ conveyor is the most suitable for short distance transportation of non-abrasive loose materials like garbage, grain, food wastes etc. (A) Flight (B) Screw (C) Drag (D) Belt

Last Answer : (A) Flight

Description : Teaching on TV is superior to class room instruction because (a) Very large classes are made possible and thus it is economically advantageous (b) Experts for teaching a difficult topic can be arranged and ... be benefited from them (c) Teaching materials can be filmed for reuse (d) all of these

Last Answer : (a) Very large classes are made possible and thus it is economically advantageous

Description : Teaching on TV is superior to class room instruction because Options: A) very large classes are made possible and thus it is economically advantageous B) experts for teaching a difficult topic can be ... can be benefited from them C) teaching materials can be filmed for reuse D) all of these

Last Answer : D) all of these 

Description : Ceramic materials fabrication cannot be done by (A) Welding (B) Slip casting (C) Extrusion (D) Plastic pressing

Last Answer : (A) Welding

Description : The structures that are formed by stacking of organized flattered membrances sacs in the chloroplasts are

Last Answer : The structures that are formed by stacking of organized flattered membrances sacs in the chloroplasts are A ... B. Cristae C. Grana D. Stroma lamellae

Description : The structures that are formed by stacking of organized flattered membrances sacs in the chloroplasts are

Last Answer : The structures that are formed by stacking of organized flattered membrances sacs in the chloroplasts are ... B. Stroma lamellae C. Stroma D. Cristae

Description : where can I find stacking chairs ?

Last Answer : You have quite a few options. Local office supply chains are an obvious choice. But also consider online supply companies which will probably be more cost-efficient. Discounts may be available depending on ... if you need the chairs for an event, you might want to explore a rental company instead.

Description : Does Kroger allow coupon stacking?

Last Answer : Most coupons cannot be combined. You can combine coupons with in store specials.