85601. The detonation is also called knocking or pinking.
85602. The pre-ignition occurs before the spark is produced whereas detonation develops after the introduction of spark.
85603. The energy released during the fission of one atom of Uranium - 235 in million electron volts is about
85604. Morse test can be conducted for
85605. The basic requirement of a good combustion chamber is
85606. In a four stroke cycle petrol engine, the charge is compressed when both the valves (i.e. inlet valve and exit valve) are closed,
85607. The thermal efficiency of diesel engines on weak mixtures is
85608. The injection pressure in a diesel engine is about
85609. High speed compression engines operate on
85610. In a four stroke cycle petrol engine, the inlet valve
85611. The nuclear power station at Tarapur has the reactor of the __________ type.
85612. In nuclear power plants, due to reflector, less fuel is needed to generate sufficient neutrons to sustain a chain reaction.
85613. The secondary fuel used in nuclear power plants is
85614. Theoretically, a four stroke cycle engine should develop __________ power as that of a two stroke cycle engine.
85615. Light weight substances can not be effective moderators.
85616. The higher combustion chamber wall temperature in compression ignition engines will __________ knocking tendency.
85617. The nuclear radiators produced in a reactor which must be sheilded are
85618. A two stroke cycle engine gives __________ mechanical efficiency than a four stroke cycle engine.
85619. The delay period in compression ignition engines depends upon
85620. Lubrication in I.C. engines dissipates the heat generated from the moving parts due to friction.
85621. The ratio of the heat equivalent to one kW hour to the heat in fuel per B.P. hour is termed as brake thermal efficiency.
85622. The theoretically correct mixture of air and petrol is
85623. In qualitative governing, the quantity of fuel is varied to suit the load on the engine and the total charge of air is altered.
85624. The function of a distributor in a coil ignition system of I.C. engines is
85625. A moderator, apart from its high neutron slowing power, and low non-productive neutron, should be
85626. The frictional power (F.P.) is given by
85627. The unit million electron volts (Mev) is commonly used to measure the nuclear energy.
85628. The knocking tendency in spark ignition engines can be decreased by adding dopes like tetra ethyle lead and ethylene dibromide.
85629. A diesel engine has compression ratio from
85630. A petrol engine, during suction stroke draws
85631. A supercharged engine as compared to an ordinary engine
85632. Which of the following does not relate to a compression ignition engine?
85633. Which of the following statement is correct regarding petrol engines?
85634. Supercharging __________ the power developed by the engine.
85635. Uranium has isotopes
85636. The colour of exhaust from diesel engine is generally
85637. In compression ignition engines, swirl denotes a
85638. A mixture containing 65% of iso-octane and 35% of normal heptane will have
85639. The maximum propulsive efficiency of a turbo-jet engine is at a speed of
85640. In order to mix air and petrol in the required proportion and to supply it to the engine during suction stroke, then __________ is employed.
85641. The advancing of spark timing in spark ignition engines will __________ knocking tendency.
85642. The knocking in spark ignition engines can be reduced by
85643. An atom bomb utilises uncontrolled nuclear fission.
85644. The ratio of the brake power to the indicated power is called
85645. The increase of efficiency of a compression ignition engine, as the load decreases, is due to
85646. A turbo-jet does not require a turbine to drive the compressor.
85647. For the same maximum pressure and heat input, the exhaust temperature of petrol engine is __________ than that of diesel engine.
85648. The compression ratio in petrol engines is kept low as compared to diesel engines because higher compression ratio in petrol engines would lead to pre-ignition of fuel.
85649. The cetane (C16H34) which is a straight chain paraffin is assigned a cetane number of
85650. Morse test is used to determine the I.P. of a
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