Related Questions

On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because:
A mercury is a metal.
B density of mercury is greater than that of water.
C cohesion of mercury is greater than its adhesion with glass.
D cohesion of water is greater than its adhesion with glass.
The ratio of the useful heat drop to the isentropic heat drop is called
A Condenser efficiency
B Nozzle efficiency
C Boiler efficiency
D Vacuum efficiency
The isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. The degree of reaction will be
A 0.4
B 0.56
C 0.67
D 1.67
Applying a pressure drop across a capillary results in a volumetric flow rate 'Q' under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is
A $$\frac{{\text{Q}}}{2}$$
B $$\frac{{\text{Q}}}{4}$$
C $$\frac{{\text{Q}}}{8}$$
D $$\frac{{\text{Q}}}{{16}}$$
Heat flux increases with temperature drop beyond the Leiden frost point in the plot of heat flux vs. temperature drop for a boiling liquid, because
A Convection becomes important
B Conduction becomes important
C Radiation becomes important
D Sub-cooled boiling occurs
On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because
A Mercury is a metal
B Density of mercury is greater than that of water
C Cohesion of mercury is greater than its adhesion with glass
D Cohesion of water is greater than its adhesion with glass
The ratio of total useful heat drop to the total isentropic heat drop, is called
A Stage efficiency
B Internal efficiency
C Rankine efficiency
D None of these
The number of boys present in the function - satisfactory .
A was
B have
C were
D have been
A patient can still live a comfortable and satisfactory life even after the removal of-
A his luggs
B part of the stomach
C a major organ such as the stomach or one lung
D his brain
A patient can still live a comfortable ans satisfactory life even after the removal of-
A his lungs
B part of the stomach
C a major organ such as the stomach or one lung
D his brain

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