____________ convection occurs when the fluid circulates by virtue of – McqOptions

MCQOPTIONS

1.	____________ convection occurs when the fluid circulates by virtue of the natural differences in densities of hot and cold fluids.
A.	Forced
B.	Natural
C.	Unpredictable.
D.	None of the mentioned
Answer» C. Unpredictable.

Discussion

No Comment Found

Related MCQs

Gas temperature remains at a higher average with increased speed.
When the spark advance is same as the optimum value the heat rejected to cooling system is increased.
In the case of water cooling, there no boundary layer of the liquid coolant on the outside of the cylinder wall.
In the case of air cooling, the boundary layer as on the gas side offers great resistance, but the effect of this is compensated largely by providing more surface areas by way of cooling pins.
WHEN_THE_SPARK_ADVANCE_IS_SAME_AS_THE_OPTIMUM_VALUE_THE_HEAT_REJECTED_TO_COOLING_SYSTEM_IS_INCREASED.?$
Gas_temperature_remain_at_a_higher_average_with_increased_speed.$
In case of water cooling, there no boundary layer of the liquid coolant on the outside of the cylinder wall?
In case of air cooling, the boundary layer as on the gas side offers great resistance, but the effect of this is compensated largely by providing more surface areas by way of cooling pins.
____________ is the transfer of heat through space or matter by means other than conduction or convection.
When the work is done to blow or pump the fluid, it is said to be ____________ convection.