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Directions to Solve

Find the correctly spelt words.

Q1: (solve as per the direction given above)

A Exadgerate

B Exeggrate

C Exagerate

D Exaggerate

Q2: In an internal combustion engine, the process of removing the burnt gases from the combustion chamber of the engine cylinder is known as

A scavenging

B supercharging

C polymerisation

D detonation

Q3: In petrol engines, using a fixed octane rating fuel, the increase in compression ratio will not effect the knocking tendency.

A Agree

B Disagree

Q4: Supercharging is the process of supplying the intake air to the engine cylinder at a density __________ the density of the surrounding atmosphere.

A less than

B equal to

C greater than

Q5: The method of determination of indicated power of a multi cylinder spark ignition engine is by the use of

A motoring test

B prony brake test

C Morse test

D heat balance test

Q6: In a four stroke cycle petrol engine, , the compression

A starts at 40° after bottom dead centre and ends at 30° before top dead centre

B may start and end anywhere

C starts at 40° before bottom dead centre and ends at 30° after bottom dead centre

D starts at bottom dead centre and ends at top dead centre

Q7: Reflector in nuclear power plants is used to reflect neutrons back into the active core.

A False

B True

Q8: During idling, a petrol engine requires __________ mixture.

A chemically correct

B lean

C rich

Q9: In natural uranium, the constituents of three naturally occuring isotopes are

A U234 = 99.282%, U235 = 0.006% and U238 = 0.712%

B U234 = 0.006%, U235 = 0.712% and U238 = 99.282%

C U234 = 0.006%, U235 = 99.282% and U238 = 0.712%

D U234 = 0.712%, U235 = 0.006% and U238 = 99.282%

Q10: Stoichiometric ratio is

A none of the above

B chemically correct air-fuel ratio by weight

C chemically correct air-fuel ratio by volume

D actual air-fuel ratio for maximum efficiency