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Directions to Solve

Find the correctly spelt words.

Q1: (solve as per the direction given above)

A Exaggerate

B Exadgerate

C Exagerate

D Exeggrate

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 detonation

B polymerisation

C scavenging

D supercharging

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

A Disagree

B Agree

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

A greater than

B equal to

C less than

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

A Morse test

B prony brake test

C heat balance test

D motoring test

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

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

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

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

D may start and end anywhere

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

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

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

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

Q10: Stoichiometric ratio is

A actual air-fuel ratio for maximum efficiency

B chemically correct air-fuel ratio by weight

C none of the above

D chemically correct air-fuel ratio by volume