Related Questions

If S is the sum of three angles of a spherical triangle, the spherical excess equals
A S - 90°
B S - 180°
C S - 270°
D S - 360°
When a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as
A Steady flow
B Turbulent flow
C Vortex flow
D Uniform flow
Two glasses of equal volume respectively are half and three - fourths filled with milk. They are then filled to brim by adding water. Their contents are then poured into another vessel. What will be the ratio of milk to water in this vessel ?
A 1 : 3
B 2 : 3
C 3 : 2
D 5 : 3
Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is
A Positive
B Negative
C Zero
D Infinity
The partial pressure distribution of an ideal gas diffusing through another stagnant ideal gas at steady state follows a/an __________ law.
A Exponential
B Parabolic
C Linear
D Cubic
The ends of a cylinderical vessel can be closed by a head, which can be one of the four shapes. For the same thickness, choose the one which can withstand the highest pressure.
A Flat plate
B Hemispherical
C Torispherical
D Ellipsoidal
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.
Rain drops are spherical because of
A viscosity
B air resistance
C surface tension forces
D atmospheric pressure
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
In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder.
A Equal to
B Less than
C More than
D None of these

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