1051. A cycle consisting of two adiabatics and two constant pressure processes is known as___________________?
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A. Joule cycle

B. Stirling cycle

C. Ericsson cycle

D. Otto cycle

E. Atkinson cycle

1052. Which is the false statement about the properties of instantaneous center____________________?
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A. none of the above

B. the two rigid links which have no linear velocity relative to each other at this center have the same linear velocity to the third rigid link

C. the two rigid links have no linear velocities relative to each other at the instantaneous centre

D. at the instantaneous center of rotation, one rigid link rotates instantaneously relative to another for the configuration of mechanism considered

E. the double centre can be denoted either by 02 or Ol2, but proper selection should be made
1053. Cam angle is defined as the angle_________________?
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A. through which, the cam rotates during the period in which the follower remains in the highest position

B. moved by the can from beginning of i ascent to the termination of descent

C. of rotation of the cam for a definite displacement of the follower

D. moved by the cam from the instant the follower begins to rise, till it reaches its highest position

E. during which the follower returns to its initial position

1054. Coriolis component is encountered in_________________?
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A. A. and C. above

B. slider crank mechanism

C. all of the above.

D. four bar chain mechanism

E. quick return mechanism of shaper
1055. Superheated vapour behaves___________________?
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A. as average of gas and vapour

B. exactly as gas

C. as steam

D. as ordinary vapour

E. approximately as a gas
1056. Which of the following is not correct procedure to increase the fatigue limit_______________?
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A. cold working

B. shot peening

C. under-stressing

D. surface decarburisation

E. all of the above

1057. Mixture of ice and water form a________________________?
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A. closed system

B. heterogeneous system

C. open system

D. thermodynamic system.

E. isolated system

1058. An open system is one in which____________________?
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A. mass does not cross boundaries of the system, though energy may do so

B. neither mass nor energy crosses the boundaries of the system

C. both energy and mass cross the boundaries of the system

D. mass crosses the boundary but not the energy

E. thermodynamic reactions do not occur

1059. A heat exchange process in which the product of pressure and volume remains constant is known as_______________?
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A. heat exchange process

B. adiabatic process

C. isentropic process

D. throttling process

E. hyperbolic process
1060. In above example, the minimum length of the coupler will be__________________?
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A. slightly less than 45 mm

B. 95 mm

C. 45 mm

D. slightly more than 45 mm

E. none of the above

1061. A point on a link connecting double slider crank chain traces a____________________?
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A. ellipse

B. circle

C. straight line

D. parabola

E. hyperbola

1062. Which of the following parameters is constant for a mole for most of the gases at a given temperature and pressure___________________?
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A. enthalpy

B. specific volume

C. mass

D. volume

E. entropy

1063. The unit of energy in S.I. units is________________?
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A. joule m.

B. joule/s

C. watt

D. joule

E. joule/m

1064. Carnot cycle has maximum efficiency for__________________?
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A. petrol engine

B. new engine

C. reversible engine

D. diesel engine

E. irreversible engine

1065. The more effective way of increasing efficiency of Carnot engine is to____________________?
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A. decrease higher temperature

B. increase lower temperature

C. keep lower temperature constant

D. increase higher temperature

E. decrease lower temperature
1066. Barometric pressure is equal to_____________________?
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A. zero mm Hg

B. 760 mm Hg

C. 1 mm Hg

D. 100mm Hg

E. 735.6 mm Hg

1067. The term scavenging is generally associated with______________________?
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A. 4-stroke cycle engines

B. aeroplane engines

C. diesel engines

D. 2-stroke cycle engines

E. high efficiency engines
1068. The connecting rod bolts are tightened up so that tightening stress _________________?
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A. none of the above

B. approaches yield point

C. is 50% of yield point

D. is about yield point divided by safety factor

E. is just sufficient to hold parts together

1069. Statistical quality control techniques are based on the theory of___________________?
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A. quality

B. probability

C. none of the above

D. all of the above

E. statistics

1070. Routing prescribes the_________________?
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A. inspection of final product

B. proper utilization of machines

C. flow of material in the plant

D. none of the above

E. proper utilization of man power

1071. Which of the following pipe joints would be suitable for pipes carrying steam_____________?
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A. threaded

B. flanged

C. bell and spigot

D. expansion

E. compression

1072. A hot short metal is_________________?
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A. brittle when hot

B. brittle under all conditions

C. brittle when cold

D. hard when hot

E. ductile at high temperature

1073. The following type of nut is used with alien bolt____________________?
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A. any one of the above

B. castle nut

C. slotted nut

D. alien nut

E. hexagonal nut

1074. The fuel air ratio in a petrol engine fitted with suction carburettor, operating with dirty air filter as compared to clean filter will be________________?
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A. remain unaffected

B. higher

C. lower

D. none of the above

E. unpredictable

1075. Fuel oil consumption guarantees for I .C. engine are usually based on__________________?
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A. calorific value of fuel

B. net calorific value of oil

C. high heat value of oil

D. all of the above

E. low heat value of oil

1076. Combustion in compression ignition engines is____________________?
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A. homogeneous

B. heterogeneous

C. both A. and B.

D. laminar

E. turbulent

1077. Current assets include_______________?
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A. common stock held by the firm

B. inventories

C. manufacturing plant and equipment

D. manufacturing plant

E. all of the above

1078. The specific fuel consumption per BH hour for a petrol engine is approximately__________________?
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A. 0.25 kg

B. 0.2 kg

C. 0.15 kg

D. 0.3kg

E. 0.35 kg

1079. In the Halsey system of wage incentive plan, a worker is ________________?
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A. not paid any bonus till his efficiency

B. never a loser

C. induced to do more work

D. paid as per efficiency

E. ensured of minimum wages
1080. Product layout is employed for____________________?
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A. effective utilization of machine

B. all of the above

C. none of the above

D. continuous production

E. batch production

1081. Air fuel ratio for idling speed of a petrol engine is approximately_________________?
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A. 1:01

B. 20:01

C. 5:01

D. 15:01

E. 10:1
1082. For steel, the ultimate strength in shear as compared to ultimate strength in tension is ___________________?
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A. 2-Jan

B. 3-Jan

C. 4-Jan

D. 2/3

E. same

1083. Elastic nut is a locking device in which__________________?
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A. one small nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming

B. hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is stewed on the bolt causing a tight grip

C. none of the above

D. through slots are made at top and a cotter-pin is passed through these and a hole in the bolt, and cotter pin splitted and bent in reverse direction at other end

E. a slot is cut partly in middle of nut and then slot reduced by tightening a screw

1084. Which is more viscous lub oil_________________?
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A. SEA 30

B. SAE 4

C. SAE 80

D. SAE 70

E. SAE 50

1085. Buttress threads are usually found on____________________?
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A. railway carriage couplings

B. screw cutting lathes

C. feed mechanisms

D. spindles of bench vices

E. screw jack

1086. Time study is__________________?
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A. the appraisal, in terms of time, of the value of work involving human effort

B. machine setting time

C. method of fixing time for workers

D. method of determining the personnel Requirement

E. time taken by workers to do a job

1087. Job enrichment technique is applied to_________________?
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A. none of the above

B. all of the above

C. reduce labour monotony

D. overcome boring and demotivating work

E. make people happy

1088. Installation of supercharger on a four-cycle diesel engine can result in the following percentage increase in power_____________?
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A. upto 25%

B. upto 35%

C. upto 75%

D. upto 50%

E. upto 100%.
1089. As a result of detonation in an I.C. engine, following parameter attains very high value _____________________?
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A. rate of rise of pressure

B. rate of rise of horse-power

C. rate of rise of temperature

D. peak pressure

E. peak temperature

1090. A stoichiometric air-fuel ratio is______________________?
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A. rich mixture for idling

B. chemically correct mixture

C. rich mixture for over loads

D. the ratio used at full rated parameters

E. lean mixture

1091. It the temperature of intake air in IC engines is lowered, then its efficiency will_______________________?
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A. remain same

B. decrease

C. increase

D. increase upto certain limit and then decrease

E. decrease upto certain limit and then in-crease

1092. The process layout is best suited where______________?
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A. bought out items are more

B. machines are arranged according to sequence of operation

C. few number of non-standardised units are to be produced

D. specialisation exists

E. mass production is envisaged

1093. In a naturally aspirated diesel engine, the air is supplied by________________?
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A. a supercharger

B. an injection tube

C. forced chamber

D. a centrifugal blower

E. a vacuum chamber
1094. Standard time is defined as ____________________?
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A. normal time + idle time

B. only normal time for an operation

C. none of the above

D. normal time + allowances

E. normal time + idle time + allowances

1095. The accunmulation of carbon in a cylinder results in increase of________________?
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A. effective compression ratio

B. clearance volume

C. ignition time

D. volumetric efficiency

E. valve travel time.

1096. A key made from a cylindrical disc having segmental cross-section, is known as______________?
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A. gib head key

B. wood-ruff key

C. hollow saddle key

D. flat saddle key

E. feather key

1097. Which of the following medium is compressed in a Diesel engine cylinder __________________?
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A. air and fuel

B. air and lub oil

C. fuel alone

D. air, fuel and lub oil

E. air aione
1098. The specific fuel consumption per BHP hour for diesel engine is approximately___________________?
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A. 0.3 kg

B. 0.15 kg

C. 0.2 kg

D. 0.25 kg

E. 0.35 kg

1099. The deflection of a cantilever beam under load W is 8. If its width is halved, then the deflection under load W will be________________?
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A. 48

B. none of the above

C. 4-Aug

D. 2-Aug

E. 28

1100. In a typical medium speed, 4-stroke cycle diesel engine ___________________?
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A. fuelinjection starts at 10 before to dead center and ends at 20 after tor dead center

B. may start and end anywhere

C. fuel injection starts at top dead center and ends at 20 after top dead center

D. fuel injection starts at just before top dead center and ends just after top deac center

E. none of the above