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Directions to Solve

Find the correctly spelt words.

Q1: (solve as per the direction given above)

A Inocculation

B Innoculation

C Inocullation

D Inoculation

Q2: The air standard efficiency of an I.C. engine depends on

A speed of engine

B none of these

C fuel used

D compression ratio

Q3: The mean effective pressure of a diesel engine having fixed compression ratio will __________ if cut off ratio decreases.

A increase

B decrease

Q4: The knocking tendency in spark ignition engines may be decreased by

A controlling the exhaust temperature

B controlling the air-fuel mixture

C reducing the compression ratio

D controlling the ignition timing

Q5: In a two stroke engine, the working cycle is completed in two revolutions of the crankshaft.

A Correct

B Incorrect

Q6: A reactor capable of converting a fertile material into fissile isotopes is called regenerative reactor.

A No

B Yes

Q7: Alpha-methyl-naphthalene (C11 H10) has a cetane number of

A 100

B 0

C 50

D 120

Q8: In a petrol engine, the mixture has the lowest pressure at the

A beginning of suction stroke

B end of compression stroke

C none of these

D end of suction stroke

Q9: Which of the following does not relate to a spark ignition engine ?

A Ignition coil

B Spar kplug

C Fuel injector

D Carburettor

Q10: The increase in intake temperature of internal combustion engines will __________ efficiency.

A have no effect on

B decrease

C increase