Related Questions

Drop manholes at the junctions of sewer lines, are provided if
A Invert level of a branch sewer is more than 60 cm that of the main sewer
B Sewer line runs along a main road
C Ordinary manhole cannot be built
D Two sewer lines intersect
The major axis of elliptical manholes on the shell should be provided
A Longitudinally
B Circumferentially
C On dished end
D Anywhere
For large sewers, maximum distance between manholes may be
A 50 m
B 100 m
C 200 m
D 300 m
Sewer manholes are generally provided at
A The change of gradient
B The change of direction
C The junctions of sewers
D All of these
Compensation against openings in process vessels for giving inlet and outlet connections, for providing sight glasses and manholes etc. is provided for strength and rigidity. The most efficient type of compensation is of __________ type.
A Nozzle or rim
B Flared out
C Fluid in
D Ring plate
The function of manholes provided in the shell of a distillation column is to
A Keep a check on the liquid gradient over the plate by direct visual observation
B Give access to the individual trays for cleaning, maintenance and installation
C Guard against foaming & entrainment by dumping antifoaming agent through it
D All of the above
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 $$\frac{{\text{Q}}}{{16}}$$

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