On which of the following variables heat convected depends ? – McqOptions

MCQOPTIONS

1.	On which of the following variables heat convected depends ?
A.	Power density
B.	Temperature difference between heated surface and coolant
C.	Thermal resistivity, density, specific heat
D.	Gravitational constant
E.	All of the above
Answer» F.

Discussion

No Comment Found

Related MCQs

<p> Dummy coil should not be used in_________________?</p>
<p> Which of the following methods is most accurate ?</p>
<p> electromagnets generally function as holding magnets ?</p>
<p> cooling is the process of dissipating the armature and field winding losses to a cooling medium circulating within the winding insulation wall______________?</p>
<p> In D.C. machines the width of the duct is usually_____________?</p>
<p> For large power transformers, self oil cooled type or air blast type which of the following values of current density may be used?</p>
<p> The weight of copper of both armature and field windings decreases with __________ in number of poles?</p>
<p> The thermal conductivity of hydrogen is _____________ times that of air?</p>
<p> A practical formula for determining the thickness of insulation between low voltage and high voltage windings is__________________?</p>
<p> Which of the following materials is used in the manufacture of resistance grids to be used in the starters of large motors ?</p>