If the temperature of intake air in internal combustion engine increases, then its efficiency will

In a four stroke cycle, the minimum temperature inside the engine cylinder occurs at the

The petrol engines are also known as __________ engines.

Iso-octane (C₈H₁₈) has octane number of

An atom bomb utilises uncontrolled nuclear fission.

The object of providing masked inlet valve in the air passage of compression ignition engines is to

The specific fuel consumption per B.P. hour for a diesel engine is about

A moderator, apart from its high neutron slowing power, and low non-productive neutron, should be

Light weight substances can not be effective moderators.

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

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

Diesel as compared to petrol is

In a coil ignition system of petrol engines, a condenser is connected across the contact-breaker in order to

In hit and miss governing, the fuel supply is cut-off completely during one or more number of cycles.

The specific fuel consumption per B.P. hour for a petrol engine is about

The brake power is always greater than indicated power.

The ratio of the brake power to the indicated power is called

During suction stroke of a four stroke petrol engine, the inlet valve opens and the charge is sucked into the cylinder as the piston moves upwards from the bottom dead centre.

The frictional power (F.P.) is given by

The higher combustion chamber wall temperature in compression ignition engines will __________ knocking tendency.

The nuclear radiators produced in a reactor which must be sheilded are

The thermal efficiency of a standard Otto cycle for a compression ratio of 5.5 will be

The material most commonly used for sheilding is

An ignition coil in the spark ignition engines supplies __________ voltage to the spark plug.

The increase of efficiency of a compression ignition engine, as the load decreases, is due to

The power actually developed by the engine cylinder of an I.C. engine is known as

The unit million electron volts (Mev) is commonly used to measure the nuclear energy.

In order to eliminate knocking in compression ignition engines, there should be

The operation of forcing additional air under pressure into the engine cylinder is known as

A nuclear reactor is said to be critical when the neutron population in the reactor core is