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Directions to Solve

Find the correctly spelt words.

Q1: (solve as per the direction given above)

A Dilicous

B Gracous

C Judicious

D Cancious

Q2: The knocking tendency in spark ignition engines can be decreased by adding dopes like tetra ethyle lead and ethylene dibromide.

A Agree

B Disagree

Q3: If V1 is the jet velocity and V0 is the vehicle velocity, then the propulsive efficiency of a rocket is given by

A

B

C

D

Q4: A diesel engine has compression ratio from

A 15 to 25

B 6 to 10

C 25 to 40

D 10 to 15

Q5: A petrol engine, during suction stroke draws

A petrol only

B air only

C a mixture of petrol and air

Q6: A supercharged engine as compared to an ordinary engine

A is lighter

B all of these

C requires smaller foundation

D consumes less lubricating oil

Q7: Which of the following does not relate to a compression ignition engine?

A Carburettor

B Governor

C Fuel pump

D Fuel injector

Q8: Which of the following statement is correct regarding petrol engines?

A all of the above

B A fine fuel spray mixed with air is ignited by the heat of compression which is at a high pressure.

C The fuel supplied to the engine cylinder is mixed with necessary amount of air and the mixture in ignited with the help of a spark plug.

D The fuel is first evaporated after passing through a carburettor and is mixed with air before ignition.

Q9: Supercharging __________ the power developed by the engine.

A has no effect on

B increases

C decreases

Q10: Uranium has isotopes

A U234

B U235

C U238

D all of these