你可能感兴趣的试题
a reduction an increase an outing a downwards
reduce engine exhaust noise reduce engine back pressure increase engine cycle efficiency increase turbocharger efficiency
to increase the system efficiency by sensible heat transfer to stop the liquid from flashing to reduce the load on the compressor to remove latent heat of vaporization and the suction piping transfer
pick up more of any increase in load pick up less of any increase in load share an equal amount of any increase in load drop an equal amount of any decrease in load
prevent engine back pressure at heavy loads increase total engine efficiency at low loads prevent boiler corrosion at low engine loads improve engine fuel consumption at any load
internal heat it can withstand load it can carry continuously load it is capable of supplying overload it can carry for a specified time only
reduce gas flow turbulence prevent exhaust gas corrosion increase the rate of combustion increase the rate of heat transfer
decrease until the engine speed increases increase as the load increases decrease as the load increases remain unchanged
increase engine power increase engine load decrease engine power improve fuel economy
decrease in ignition lag increase in fuel economy reduction in lube oil viscosity increase in cylinder misfiring
reduce engine exhaust noise reduce engine back pressure recover heat which otherwise would be lost increase turbocharger efficiency
lower the no-load RPMs provide more air for combine with the fuel increase the no-load RPMs provide more fuel combine with the air
prevent soot fires in the exhaust system prevent exhaust gas erosion of the tubes increase the velocity of exhaust gas flow increase the rate of heat transfer
loss of field excitation large increase in load total loss of load loss of steam pressure
save network cost improve the reliability of supplying power to important load prevent sequence reverse increase the power factor of important load
exhaust air box pressure brake main effective pressure all of the above
decrease only increase only decrease slightly then returned to original speed increase slightly then returned to original speed
increase exhaust gas velocity through the boiler reduce accumulations of carbon deposits on the heat transfer surfaces eliminate exhaust gas pulsations and noise increase the rate of heat transfer to the waterside
speed will drop drastically with any increase in load will stop due to zero fuel supply will stall upon application of load speed will remain fairly constant despite load changes
move in an opening direction move in a closing direction either open or close not move at all