1201. Which process will increase the fatigue duration of parts ?
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A. electroplating

B. shot-peening

C. decarburisation

D. all of the above.

E. finishing and polishing

1202. The output of a diesel engine can be increased without increasing the engine revolution or size in following way_________________?
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A. increasing flywheel size

B. scavenging

C. feeding more fuel

D. supercharging

E. heating incoming air

1203. Residual stress in materials_________________?
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A. is independent of external loads

B. is always beneficial

C. becomes zero when external load is removed

D. acts when external load is applied

E. is always harmful

1204. Merit Rating is the method of determining worth of_______________?
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A. overall quality

B. a job

C. a particular division in workshop

D. an individual employee

E. machine

1205. Basic hole is one_________________?
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A. whose upper deviation is zero

B. none of the above

C. whose lower deviation is zero

D. does not exist

E. whose lower as well as upper deviations are zero

1206. Expediting function consists in keeping a watch on__________________?
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A. operators activity

B. minimising the delays

C. making efficient despatching

D. flow of material and in case of trouble locate source of trouble

E. none of the above

1207. Diesel fuel, compared to petrol is_________________?
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A. just about the same difficult to ignite

B. more difficult to ignite

C. less difficult to ignite

D. none of the above

E. highly ignitable

1208. Maximum principal stress theory is applicable for_____________________?
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A. brittle materials

B. all of the above

C. none of the above

D. elastic materials

E. ductile materials

1209. Work study is done with the help of_______________?
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A. none of the above

B. material handling

C. process chart

D. stop watch

E. all of the above

1210. Which of the following is independent of sales forecast______________?
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A. productivity

B. production control

C. inventory control

D. production planning

E. capital budgeting

1211. Which of the following organisations is best suited for steel plants__________________?
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A. functional organisation

B. line, staff and functional organisations

C. staff organisation

D. line organisation

E. scalar organisation

1212. If an application calls for stresses on screw threads in one direction only, then the following type of thread would be best suited ________________?
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A. acme

B. BSW

C. buttress

D. metric

E. square

1213. The operation of forcing additional air under pressure in the engine cylinder is known as________________?
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A. supercharging

B. scavenging

C. dissociation and carburretion of fuel

D. pre-ignition

E. turbulence

1214. Most high speed compression engines operate on ___________________?
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A. Dual cycle

B. Otto cycle

C. Carnot cycle

D. Two stroke cycle

E. Diesel cycle

1215. The air-fuel ratio of the petrol engine is controlled by__________________?
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A. carburettor

B. scavenging

C. injector

D. governor

E. fuel pump

1216. In nitrated parts, the origins of the fatigue cracks will occur at__________________?
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A. surface

B. within the core

C. just below the surface

D. none of the above

E. could occur anywhere

1217. The mean effective pressure obtained from engine indicator indicates the________________?
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A. minimum pressure

B. exhaust pressure

C. maximum pressure developed

D. instantaneous pressure at any instant

E. average pressure
1218. The rating of a diesel engine, with increase in airintlet temperature, will ___________________?
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A. increase linearly

B. increase parabolically

C. decrease parabolically

D. decrease linearly

E. first decrease linearly and then increase parabolically

1219. Volatility of diesel fuel oil is_________________?
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A. it catches fire without external aid

B. temperature at which it solidifies or congeals

C. indicated by 90% distillation temperature, i.e., when 90% of sample oil has distilled off

D. minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame

E. temperature at which it flows easily

1220. If two springs are in parallel then their overall stiffness will be_______________?
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A. half

B. same

C. double

D. unpredictable

E. none of the above

1221. Which of the following is false statement. Some of the methods used to reduce diesel smoke are as follows ________________?
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A. engine derating i.e. reducing the maxi-mum flow of fuel

B. increasing the compression ratio

C. using additives in the fuel

D. adherence to proper fuel specification

E. avoidance of overloading

1222. The grouping of activities into organisational units is called_________________?
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A. corporate plans

B. departmentatidn

C. company policy

D. functional authority

E. higher level management

1223. In composite or reverse laid ropes___________________?
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A. wires are not twisted

B. wires in two adjacent strands are twisted in opposite direction

C. direction of twist of wires and strands are same

D. direction of twist of wires in strands is opposite to the direction of twist of strands

E. none of the above

1224. The shear plane in case of bolts should_________________?
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A. be parallel to axis of bolt

B. be normal to threaded portion of shank

C. be across threaded portion of shank

D. never be across the threaded portion

E. none of the above

1225. If p = bearing pressure on projected bearing area, z = absolute viscosity of lubricant, and N = speed of journal, then the bearing characteristic number is given by________________?
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A. Zp/N

B. ZN/p

C. Z/pN

D. N/Zp

E. p/ZN

1226. The function of a washer is to___________________?
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A. provide bearing area

B. provide cushioning effect

C. act as a locking device

D. absorb shocks and vibrations

E. provide smooth surface in place of rough surface

1227. In hydrodynamic bearings_____________________?
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A. grease is used for lubrication

B. none of the above

C. do not require external supply of lubricant

D. the oil film is maintained by supplying oil under pressure

E. the oil film pressure is generated only by the rotation of the journal
1228. Pour point of fuel oil is the_________________?
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A. minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame

B. temperature at which it solidifies or congeals

C. it catches fire without external aid

D. temperature at which it flows easily

E. indicated by 90% distillation temperature i.e., when 90% of sample oil has distilled off

1229. A stud________________________?
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A. has a head on one end and a nut fitted to the other

B. has head at one end and other end fits into a tapped hole in the other part to be joined

C. has both the ends threaded

D. has pointed threads

E. requires locking nuts

1230. A tube has the following advantage over pipe_________________?
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A. greater shock absorption

B. lighter and easier to handle

C. all of the above

D. none of the above

E. smoother inside walls

1231. Which one of the following represents a group incentive plan ?
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A. Bedaux Plan

B. Scanlon Plan

C. Taylor Differential Piece Rate System

D. Halsey Premium Plan

E. Rowan Plan

1232. If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to___________________?
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A. 0.75

B. 0.6

C. 0.5

D. 0.2

E. 0.25
1233. If shearing stress in nut is half the tensile stress in a bolt, then nut length should be equal to___________________?
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A. 1.5 x diameter of bolt

B. 0.75 x diameter of bolt

C. diameter of bolt

D. 0.5 x diameter of bolt

E. 1.25 x diameter of bolt

1234. When two springs are in series (having stiffness K), the equivalent stiffness will be________________?
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A. K

B. 2K

C. K/2

D. KIA

E. UK

1235. Scavenging air in diesel engine means___________________?
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A. air fuel mixture

B. burnt air containing products of combustion

C. air used for forcing burnt gases out of engines cylinder during the exhaust period

D. air used for combustion sent under pres-sure

E. forced air for cooling cylinder

1236. A hmh flame speed is obtained in diesel engine when air fuel ratio is_______________?
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A. chemically correct mixture

B. about 10% rich mixture

C. uniform throughout the mixture

D. about 10% lean mixture

E. about 3-5% rich mixture

1237. The ratio of endurance limit in shear to the endurance limit in flexure is__________________________?
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A. 0.55

B. 0.5

C. 0.6

D. 0.4

E. 0.33

1238. For the same power developed in I.C. engines, the cheaper system is_____________?
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A. centrifugal pump

B. supercharged

C. naturally aspirated

D. none of the above

E. turbo charger

1239. Per cent idle time for men or machines is found by___________________?
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A. ABC analysis

B. time study

C. work sampling

D. work study

E. method study

1240. A key capable of tilting in a recess milled out in a shaft is known as______________________?
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A. feather key

B. flat saddle key

C. gib head key

D. wood-ruff key

E. hollow saddle key

1241. Transverse fillet welded joints are designed for________________?
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A. compressive strength

B. shear strength

C. torsional strength

D. tensile strength

E. bending strength

1242. Which of the following is the lightest and most volatile liquid fuel________________?
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A. kerosene

B. fuel oil

C. gasoline

D. lub oil

E. diesel

1243. Shear stress theory is applicable for____________________?
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A. none of the above

B. brittle materials

C. elastic materials

D. all of the above

E. ductile fnaterials
1244. The building up of worn and uridersized parts, subjected to repeated loads by electroplating is_____________________?
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A. extremely hazardous

B. best method

C. has no effect as regards fatigue strength

D. all of the above

E. cheapest method

1245. Belt slip may occur due to________________?
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A. loose belt

B. none of the above

C. all of the above

D. heavy load

E. driving pulley too small

1246. A diesel engine as compared to petrol engine (both running ar rated load) is ____________________?
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A. other factors will decide it

B. unperdictable

C. less efficient

D. equally efficient

E. more efficient
1247. The rated life of a bearing varies___________________?
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A. inversely as fourth power of load

B. none of the above

C. directly as load

D. inversely as square of load

E. inversely as cube of load
1248. When a nut is tightened by plaping a washer below it, the bolt will be subjected to following type of loads___________________?
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A. shear

B. combined loads

C. all of the above

D. compression

E. tension
1249. A heat engine utilises the_________________?
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A. low heat value of

B. all of the above

C. high heat value of oil

D. mean heat value of oil

E. calorific value of oil

1250. Fibrous fracture occurs in_____________?
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A. ductile material

B. all of the above

C. elastic material

D. hard material

E. brittle material