Q. By higher octane number of spark ignition fuel, it is meant that the fuel has

View solution

Q. During idling, a petrol engine requires __________ mixture.

View solution

Q. In natural uranium, the constituents of three naturally occuring isotopes are

View solution

Q. Stoichiometric ratio is

View solution

Q. Which of the following fuel has little tendency towards detonation ?

View solution

Q. In a petrol engine, the fuel supplied to the engine cylinder is mixed with required quantity of air and the mixture is ignited with a

View solution

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

View solution

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

View solution

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

View solution

Q. In a four stroke cycle petrol engine, , the compression

View solution

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

View solution

Q. The air-fuel ratio of the petrol engine is controlled by

View solution

Q. If the compression ratio in I.C. engine increases, then its thermal efficiency will

View solution

Q. The relative efficiency of an I.C. engine is the ratio of the indicated thermal efficiency to the air standard efficiency.

View solution

Q. The volumetric efficiency ofa well designed engine may be

View solution

Q. Which of the following statement is correct regarding the features of a Breeder reactor?

View solution

Q. In diesel engines, the ignition takes place due to the heat produced in the engine cylinder at the end of compression.

View solution

Q. The fuels in order of decreasing knock tendency for spark ignition engines are

View solution

Q. The ratio of the work obtained at the crankshaft in a given time to the energy supplied during the same time is called

View solution

Q. Plutonium (Pu239) is produced

View solution