B. 6 to 12 volts

C. 80,000 volts

D. 240 volts

E. 1000 volts

A. combined governing

B. hit and miss governing

C. partial governing

E. quality governing

A. improved distribution of air to cylinder

B. compact design requiring lesser space

C. reduced torsional vibration because of shorter crankshaft

E. casting less liable to distortion

A. no flywheel

C. flywheel whose size may be less or more depending on several other fac-tors

D. smaller flywheel

E. same size flywheel

A. it may be less or more depending on several other factors

B. same

D. more

E. more upto some load and then less

B. accelerates auto-ignition

C. retards auto-ignition

D. has no relation with auto-ighition

E. does not affect auto-ignition

A. 0.50%

B. 1%

C. 0.10%

E. 0.01%

A. net calorific value

B. middle heat value

C. high heat value

D. calorific value

A. is an index of detonation quality

C. has octane number of 50

D. is an index of knocking quality

E. has octane number of 0

A. increase or decrease knocking tendency depending on strength and time of spark

B. not affect the knocking tendency

C. unpredictable

D. decrease the knocking tendency

A. thermal efficiency of 4-stroke engine is more due to positive scavenging

B. 2-stroke engine can run in any direction

C. petrol engines work on otto cycle

D. In 4-stroke engine, a power stroke is obtained in 4-strokes

A. 1-5-2-6-3-4

B. 1-6-2-5-4-3

C. 1-4-2-5-6-3

D. 1-3-6-5-2-4

A. Rich mixture

C. Lean mixture

D. Unpredictable

B. Diesel cycle is more efficientthan Otto

C. both Otto and Diesel cycles are, equally efficient

D. compression ratio has nothing to do with efficiency

E. which is more efficient would depend on engine capacity

A. none of the above

B. compression starts at bottom dead center and ends at top dead center

C. compression starts at 10 before bottom dead center and, ends just before top dead center

D. may start and end anywhere

A. all of the above

B. net claorific value of oil

C. high heat value of oil

E. calorific value of fuel

A. ketones and sulphur compounds

B. peroxides, aldehydes, oxides and sul-phides

C. aldehydes, oxides and ketones

E. none of the above

A. retarded ignition

B. auto ignition

D. detonation

E. accelerated ignition

A. instantaneous pressure at any instant

B. exhaust pressure

D. maximum pressure developed

E. minimum pressure

B. injecting excess fuel for raising more load

C. providing forced cooling air

D. raising exhaust pressure

E. supplying compressed air to remove combustion products fully

A. marine engines

B. diesel engines

C. gas turbines

E. petrol engines

B. 75 cc per min. per h.p.

C. 750 cc per min. per h.p.

D. 750000 cc per min. per h.p

E. 7500 cc per min. per h.p.

A. none of the above

C. chemically correct mixture

D. rich mixture

E. unpredictable

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

B. none of the above

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

E. may start and end anywhere

B. 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

C. temperature at which it flows easily

D. it catches fire without external aid

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

B. wears less

C. is stronger

D. absorbs shocks

E. does not react with fuel and lub oil

A. distillation temperature

C. calorific value

D. cetane number

E. self ignition temperature

A. 4

B. 8

C. 2-Jan

E. 1

A. 15-18 m3

B. 5 m3

C. 1 m3

E. 5-6 m3

A. heavy turbulence

B. improved scavenging

C. preignition

E. heavy supercharging

B. decreae

C. unpredictable

D. depend on other factors

E. be unaffected

A. 200

B. 125

D. 275

E. 180

A. unpredictable

B. increases

D. remains unaffected

E. depends on other factors

A. varying compression ratio

B. using lian mixture

D. reducing the r.p.m.

E. increasing inlet pressure

B. decrease the knocking tendency

C. increase or decrease knocking tendency depending on strenght and time of spark

D. not affect the knocking tendncy

E. unpredictable

B. S.I. engine

C. two stroke engine

D. four stroke engine

E. all of the above

A. may be anywhere

B. varies from situation to situation

D. same level

E. slightly lower level

A. 20:01

B. 9:01

C. 6:01

D. 12:01

A. 0.85

B. 1

D. 1.2 to 1.5

A. equal to stroke volume

C. equal to stroke volume and clearance volume

D. more than stroke volume

E. more than cylinder volume

A. non of the above

B. chemically correct mixture has mini-mum reaction time

C. rich mixture has high reaction time

E. lean mixture has high reaction time

A. forced lubrication system

C. applying grease under pressure

D. wet sump method

E. splash lubrication

A. depends on size of engine

B. same

C. higher

D. unpredictable.

B. controlling valve opening/closing

C. scavenging and supercharging

D. injection

E. governing

B. reciprocating pump

C. centrifugal pump

D. natural aspirator

E. supercharger

A. ignition

B. injected fuel

C. spark

E. combustion chamber

A. depends on quality of fuel

C. higher

D. same

E. unpredictable

A. has 100 cetane number

B. has zero cetane number

D. determines the efficiency of an I.C. engine

E. helps detonation

B. solid fuel

C. does not exist

D. liquid fuel and air

E. solid fuel and air

A. 40%

B. 15%.

C. 50%

E. 90%